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X 320 Excavator

Operation & Maintenance Manual (S/N 511721116 & Above)

6724026 (8–95) Revised (9–96)

Printed in U.S.A.

CONTENTS FOREWORD FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 MACHINE SIGN TRANSLATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 CALIFORNIA PROPOSITION 65 WARNING

SAFETY

OPERATING INSTRUCTIONS

Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects and other reproductive harm.

PREVENTIVE MAINTENANCE

REFERENCE INFORMATION Write the correct information for YOUR Bobcat Hydraulic Excavator in the spaces below. Always use these numbers when referring to your Hydraulic Excavator.

MACHINE SIGN TRANSLATIONS

Bobcat Hydraulic Excavator Serial Number . . . . . . . . . . . . . Engine Serial Number . . . . . . . . SPECIFICATIONS NOTES:

YOUR BOBCAT EXCAVATOR DEALER: ADDRESS: PHONE: Melroe Company P.O. Box 128 Gwinner, ND 58040–0128 Melroe Europe J. Huysmanslaan 59 B–1651 LOT BELGIUM

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

Melroe Company is ISO 9001 certified ISO 9001 is a set of international standards that control the processes and procedures which we use to design, develop, manufacture, distribute, and service Melroe Company products. British Standards Institute (BSI) is the Certified Registrar Melroe chose to assess the Company’s compliance with the ISO 9001 set of standards. The BSI registration certifies that the two Melroe manufacturing plants and the Melroe corporate offices (Gwinner, Bismarck & Fargo) in North Dakota are in compliance with ISO 9001. Only certified assessors, like BSI, can grant registrations. Since registration requires this third–party auditing, it is irrefutable evidence of conformance. Continued certification is subject to periodic audits. ISO 9001 means that as a company we say what we do and do what we say. In other words, we have established procedures and policies, and we provide evidence that the procedures and policies are followed. What does ISO 9001 mean to Bobcat Customers? It means that Melroe Company produces your Bobcat loader, Excavator or Spra–Coupe, and attachments with strict attention to details, using the latest technology and proven techniques.

REGULAR MAINTENANCE ITEMS 3974113

ENGINE OIL FILTER

6647773

FUEL FILTER

897064

AIR CLEANER

6646545

RADIATOR CAP

6653336

HYDRAULIC FILTER

6665093

BATTERY

6724094

PROPYLENE GLYCOL ANTI–FREEZE, Premixed – [–34°F (–37°C)]

6724354

PROPYLENE GLYCOL ANTI–FREEZE, Concentrate

6563328

BLACK GOLD Hydraulic/Hydrostatic Fluid – 5 Gallons

6657299

MOTOR OIL 15W40 CE/SG – 1 Qt.

6657300

MOTOR OIL 15W40 CE/SG – 5 Qt.

6657301

MOTOR OIL 10W30 CE/SG – 1 Qt.

6657302

MOTOR OIL 10W30 CE/SG – 5 Qt.

6657303

MOTOR OIL 30 CE/SG – 1 Qt.

6657304

MOTOR OIL 30 CE/SG – 5 Qt.

320 (S/N 511721116 & Above) Exc Operation & Maintenance

FOREWORD FOREWORD This manual gives the owner/operator necessary operating, preventive maintenance instruction for the Bobcat Hydraulic Excavator. Read this manual completely and know the Bobcat Hydraulic Excavator before operating and servicing it. All references to left or right on the excavator are given in relation to the operator’s left or right hand while in the operator’s seat. For further information, see your Bobcat Excavator dealer Parts Manuals, Service Manuals and extra Operation & Maintenance Manuals are also available. SERIAL NUMBER LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v DELIVERY REPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v BOBCAT HYDRAULIC EXCAVATOR IDENTIFICATION . . . . . . . . . . . . . . . . vi

iii

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

320 (S/N 511721116 & Above) Exc Operation & Maintenance

SERIAL NUMBER LOCATIONS Always use the FULL serial number (including the first four digits) when requesting service or when ordering parts. Early or later models (identification made by serial number) may use different parts, or it may be necessary to use a different procedure in doing a specific service operation.

HYDRAULIC EXCAVATOR SERIAL NUMBER The excavator serial number is on the front of the machine frame, to the right of the boom [A]. P–2216

ENGINE SERIAL NUMBER The engine serial number is located on the engine block, by the fuel injection pump [B].

P–0842

DELIVERY REPORT The Delivery Report items must be explained to the owner/operator by the dealer. The dealer is to fill out the form and the owner/operator signs the form to indicate his understanding [C].

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

BOBCAT HYDRAULIC EXCAVATOR IDENTIFICATION GRAB HANDLES CONTROL LEVERS (JOYSTICK) CANOPY (ROPS)

ENGINE COVER UPPER STRUCTURE TRACK FRAME TRACK

OPERATORS HANDBOOK ARM CYLINDER

GRAB HANDLES

BOOM OPERATOR SEAT

AUXILIARY LINES BUCKET CYLINDER

SEAT BELT

ARM

TOOL BOX (Operator’s Manual Location)

BUCKET LINK

BLADE CYLINDER BUCKET BOOM CYLINDER BLADE

B–14408 B–14407

320 (S/N 511721116 & Above) Exc Operation & Maintenance

SAFETY SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix, x FIRE PREVENTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi MACHINE SIGNS (DECALS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii, xiii

vii

SAFETY

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

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320 (S/N 511721116 & Above) Exc Operation & Maintenance

SAFETY INSTRUCTIONS SAFETY IS THE OPERATOR’S RESPONSIBILITY The Bobcat Hydraulic Excavator is a highly maneuverable and compact machine. In operation, it is rugged and useful under a wide variety of conditions. This presents an operator with hazards which are common for off highway, rough terrain applications but not unique for use of Bobcat Hydraulic Excavator. The excavator has an internal combustion engine with resultant heat and exhaust. All exhaust gases can kill or cause illness so the excavator must be used with adequate ventilation. The excavator must not be used in an area with explosive dusts or gases or so that the engine exhaust can contact flammable material. The excavator has a spark arrestor muffler which is required for operation in certain areas. The dealer recommends the capabilities of the excavator and attachments for each application. The dealer demonstrates the safe operation of the excavator according to the manufacturer’s instructional materials which are also available to all operators. The dealer can also identify unsafe modifications or use of unapproved attachments. The attachments and buckets are designed for rated capacity and secure fastening to the Bobcat Hydraulic Excavator. The user must check with the dealer or Melroe Company literature or load diagram to identify safe loads. The following publications provide information on the safe use and maintenance of the excavator and attachments: • The Delivery Report is used to check whether complete instructions have been given to the new owner and that the machine is in safe operating condition. • The Operation & Maintenance Manual delivered with the Bobcat Hydraulic Excavator gives operating information as well as routine maintenance information. It is a part of the machine and must stay with the machine when it is sold. Replacement Operation & Maintenance Manuals can be purchased from your dealer. • Every Bobcat Hydraulic Excavator has machine signs (or decals) which instruct on the safe care and operation. The signs and their location are shown in the Operation & Maintenance Manual. Replacement signs are available from your Bobcat Hydraulic Excavator dealer. • The Bobcat Hydraulic Excavator has a plastic Operator Handbook fastened to the operator cab. Its instructions are available to the operator. The handbook is available from your dealer in an English, French, German, Dutch, Italian or Spanish edition. • The CIMA safety manual contains information for safe operation and maintenance. • The Service Manual and Parts Manual are optional manuals available from your Bobcat Hydraulic Excavator dealer for use by mechanics to do shop–type service and repair. • The Hydraulic Excavator Operator Training Course is available through your local dealer. This course is intended to provide rules and practices of correct operation of the Hydraulic Excavator. The dealer and owner/operator review the recommended uses of the excavator and attachments when excavator is delivered. If the owner/operator will be using the excavator for a different application than was originally demonstrated by the dealer, ask the dealer for recommendations on the new use.

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

BEFORE OPERATING THE BOBCAT LOADER Safety Alert Symbol: This Safety Symbol is used for important safety messages. When you see this symbol, follow safety message to avoid personal injury or death. Operator must have instructions before running the machine. Untrained operators can cause injury or death. W–2001–1285

Warnings on the machine in the manuals are for your safety. Failure to obey warnings can cause injury or death. W–2044–1285

B–10731

This notice identifies procedures which must be followed to avoid damage to the machine. I–2019–0284

SAFE OPERATION NEEDS A QUALIFIED OPERATOR* A QUALIFIED OPERATOR MUST DO THE FOLLOWING:

• UNDERSTAND THE WRITTEN INSTRUCTIONS, RULES AND REGULATIONS • The written instructions from Melroe Company include the delivery report, operator handbook, Operation & Maintenance Manual, and machine signs (decals).

• Check the rules and regulations at your location. • HAVE TRAINING WITH ACTUAL OPERATION • Operator training must consist of a demonstration and verbal instruction. This training is given by your excavator dealer before the excavator is delivered.

• The new operator should start in an area without bystanders and use all the controls until he can operate safely under all conditions of the work area.

• KNOW THE WORK CONDITIONS • For each material to be handled, the operator must know how to avoid exceeding the rated lift capacity of the excavator. For example, you should not use the excavator for lifting heavy objects.

• The operator must know any prohibited uses or work areas, for example, he needs to know about excessive slopes. • Know the location of any underground lines. Call local utilities or ONE CALL before you dig. • Wear tight fitting clothing. Always wear safety glasses when maintaining or servicing excavator. Safety glasses,

hearing protection or an excavator special application kit are required for some work. See your dealer about Melroe Safety equipment.

* For an operator to be qualified, he must not use drugs or alcoholic drinks which impair his alertness or coordination while working. An operator who is taking prescription drugs must get medical advice to determine if he can safely operate a machine.

320 (S/N 511721116 & Above) Exc Operation & Maintenance

FIRE PREVENTION

320ExcavatorOperation&MaintenanceManual#6724026S/N511721116&Above–ContentsSection

The excavator has several components that are at high temperature under normal operating conditions. The primary source of high temperatures is the engine and exhaust system. The electrical system, if damaged or incorrectly maintained, can be a source of arcs or sparks. These conditions make it important to avoid applications where explosive dust or gases can be ignited by arcs, sparks or heat. Flammable debris (leaves, straw, etc.) must be removed regularly. If flammable debris is allowed to accumulate, it will increase the fire hazard. The excavator must be cleaned as often as necessary to avoid this accumulation. This flammable debris in the engine compartment can be a fire hazard when the machine is parked with a hot engine. The spark arrestor muffler is designed to control the emission of hot particles from the engine and exhaust system, but the muffler and the exhaust gases are still hot. This spark arrestor muffler does not change the need to avoid use of the excavator in an atmosphere with explosive dust or gases or where the exhaust can contact flammable material. • Do not use the Hydraulic Excavator where explosive dust or gases can be ignited by arcs, sparks, hot components or exhaust gases. • The engine compartment and engine cooling system must be inspected every day and cleaned if necessary to prevent overheating. Remove all flammable material. • Check all electrical wiring and connections for damage. Keep the battery terminals clean and tight. Repair or replace any damaged part. • Check fuel and hydraulic tubes, hoses and fittings for damage and leakage. Tighten or replace any parts that show leakage. Always clean fluid spills. • Do not use ether or starting fluids on this engine. It has glow plugs. These starting aids can explode and injure you or a bystanders. • Always clean the excavator before doing any welding. Cover rubber hoses, battery and all other flammable parts. Keep a fire extinguisher near the machine when welding. • Stop the engine and let it cool before adding fuel. No smoking! • Use the procedure in Operation & Maintenance Manual for connecting the battery. • Use the procedure in the Operation & Maintenance Manual for servicing the spark arrestor muffler every 100 hours of operation.

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

MACHINE SIGNS (DECALS) Follow the instructions on all the Machine Signs (Decals) that are on the Excavator. Replace any damaged machine signs and be sure they are in the correct location. Machine signs are available from your Bobcat Excavator dealer.

6589688

6588380 6588730

6587425 ISO 6587427 STANDARD

6643356

6594897

6643355

6577754

6589743

B–14408

xii

320 (S/N 511721116 & Above) Exc Operation & Maintenance

MACHINE SIGNS (DECALS) (Cont’d) Follow the instructions on all the Machine Signs (Decals) that are on the Excavator. Replace any damaged machine signs and be sure they are in the correct location. Machine signs are available from your Bobcat Excavator dealer.

6587426 ISO 6587428 STANDARD 6587139 6587424

6577754

6587423

6589058

6534739

6588382

6628904 B–14407

xiii

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

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320 (S/N 511721116 & Above) Exc Operation & Maintenance

OPERATING INSTRUCTIONS AUDIBLE ALARM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 AUXILIARY OPERATION PEDAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Flush Face Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 AUXILIARY POWER OUTLET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 BLADE CONTROL LEVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 BOOM SWING PEDAL AND LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 BUCKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 CAB/CANOPY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 CAB/CANOPY FOPS (Falling Object Protective Structure) . . . . . . . . . . . . . . 24 Front Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Emergency Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 CAB ELECTRICAL (Cab Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 CAB OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Opening the Front Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Closing the Front Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 CONTROL LEVER (JOYSTICK) LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 CONTROL LEVERS (JOYSTICKS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Operation of Left Control Lever (ISO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Operation of Right Control Lever (ISO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CONTROL LEVERS (STANDARD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Operation of Left Control Lever (STANDARD) . . . . . . . . . . . . . . . . . . . . . . . . 10 Operation of Right Control Lever (STANDARD) . . . . . . . . . . . . . . . . . . . . . . 10 DAILY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 ENGINE STOP CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 GETTING ON AND OFF THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 HORN BUTTON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 INSTRUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 KEY SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 LIFTING THE EXCAVATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 LIFTING A LOAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 LIGHT SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 OPERATOR’S HANDBOOK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 OPERATING PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Breaking in a New Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 General Operation Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Operating in Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 PARKING THE HYDRAULIC EXCAVATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 SEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SPEED CONTROL LEVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Cold Temperature Starting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Normal Starting Procedure (With Engine Warm) . . . . . . . . . . . . . . . . . . . . . . 16 STEERING LEVERS/FOOT PEDALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Forward and Reverse Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Turning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 STORAGE COMPARTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 SWING LOCK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 TRANSPORTING THE HYDRAULIC EXCAVATOR . . . . . . . . . . . . . . . . . . . . 21 WINDSHIELD WASHER TANK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

–1–

OPERATING INSTRUCTIONS

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

GETTING ON AND OFF THE MACHINE

Use the grab handles, the tracks and the safety treads to get on and off the machine [A].

P–2171

Fasten the seat belt snugly. Adjust the seat belt so that the buckle is centered between your hips [B].

P–0753

Lower the control console(s) before Starting the Engine. (See Page 15 [C]).

P–2174

Pull the lever (Item 1) [D] to the rear to release and raise the control console.

NOTE: On Excavators equipped with ROPS canopy, both the left and right control consoles can be raised for operator access. On Excavators with enclosed cab, only the left control console can be raised.

P–2177

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

SEAT

The operator seat can be adjusted as follows: Release the seat adjustment lever (Item 1) [A]. Slide the seat backward or forward for easy reach of the machine controls. NOTE: For ease of access to the seat adjustment lever, have the left hand console in the raised position.

P–2167

The handle (Item 1) [B] has three adjustments for operator weight.

B 1

P–2173

Turn the knob (Item 2) [C] to angle the back of the seat for operator comfort.

P–2173

CONTROL LEVER (JOYSTICK) LOCK The control lock microswitch (Item 1) [D] disconnects the hydraulics from the joystick control levers when the control console(s) are in the raised position. (The joystick control levers will not operate with the console(s) raised). NOTE: The travel levers, blade lever, boom swing pedal and the attachment operation pedal functions are NOT affected by the control lock.

P–2164

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

CONTROL LEVER (JOYSTICK) LOCK (Cont’d)

Lower the control console(s) to engage the joystick control levers [A].

P–2174

INSTRUMENTS

The right control console has the following indicator lamps [B]:

1. Engine Temperature Lamp – (Overheat indicator) When the engine coolant temperature exceeds the allowable temperature range, the lamp comes ON and the audible alarm sounds. STOP the engine.

3 4

2. Engine Oil Lamp – When the engine oil pressure is low, the lamp comes ON and the audible alarm sounds. STOP the engine. 3. Charging Lamp – The lamp comes ON when the alternator is NOT charging the battery.

P–0803

4. Preheat Indicator Lamp – When turning the keyswitch to the HEAT position, the lamp comes ON showing the glow plugs are heating.

C 1

The left control console has the following indicator lamp and instrument [C]:

1. Low Fuel Indicator Lamp – When the fuel is low, (.8 gal. [3.1 L]), the lamp comes ON. Add fuel. 2. Fuel Gauge – Shows the amount of fuel in tank.

Inside the engine compartment are the following instruments and fuses [D]:

P–0805

1. Hourmeter – Records the total operating hours. (If the ignition key is left in the run position, with the engine OFF, the hourmeter will continue to run and the audible alarm will sound).

2. Fuse – Ignition (25 Amp) – This fuse supplies the power for the work light circuit and power to the cab (if equipped). 3. Fuse Accessories (25 Amp) – This fuse supplies power for engine start–up, gauge functions, horn, audible alarm, control console micro–switches, auxiliary power outlet and the hourmeter. 4. Fuse – Lights (25 Amp) – This fuse supplies power for the cab heater (if equipped) and the rear accessory wire.

P–2190

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

OPERATOR’S HANDBOOK

The Operator’s Handbook is a quick reference for operating the hydraulic excavator and is located behind the operator seat on the right side of the cab [A]. Read the Operation & Maintenance Manual and Operator’s Handbook before operating the hydraulic excavator.

P–6172

STORAGE COMPARTMENT The storage compartment, located behind the operator seat at the left side of the cab, can be used to store items (Example: Operation & Maintenance Manual) and then locked [B] & [C]. The storage compartment lock uses the same key as the ignition switch.

P–6173

P–6174

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

AUDIBLE ALARM

An audible alarm (Item 1) [A] located in the right hand console, will sound when these conditions exist:

When the key is in the ON position with the engine stopped. When there is low engine oil pressure. When there is high engine coolant temperature. KEY SWITCH The key switch has the following functions [B]: P–2343

A. Key switch is OFF. B. PREHEAT position – Hold switch in this position to activate the glow plugs for starting in cold weather conditions. See decal (Item 2) [D] for glow plug heating times and see also Page 17.

B A B

C. START the engine.

D. ON (run) position – When the engine is running release the key and this position is obtained automatically.

NOTE: Always turn key switch and all accessories to OFF position after the engine is stopped or battery will discharge. Audible alarm will sound if the key is in the ON position with the engine stopped.

P–2180

See Pages 15 and 16 for the starting procedure.

LIGHT SWITCH The light switch (Item 1) [C] has the following functions: A. Light switch is OFF. B. Strobe light/flasher (if equipped).

C. Front work lights and the fuel gauge back light (plus any lights used with position B).

D A

D. Additional work lights (if equipped) – (plus any lights used with positions B and C).

C B P–2178

AUXILIARY POWER OUTLET

The auxiliary power outlet (Item 1) [D] is used for supplying electrical current for field installed electrical options (such as rotating beacon). This is a 12 volt supply outlet.

P–2183

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

CAB ELECTRICAL (Cab Option)

The cab overhead console has the following components [A]: 1. Fuse (5 Amp) – This fuse (Item 1) [A] supplies the power for the wiper/washer and for the interior light.

2. Wiper/Washer Switch – Turn the switch (Item 2) [A] to activate wipers, OFF–LOW–HIGH. Push switch IN to activate the washer. 3. Interior Light – Push the button (Item 3) [A] on the side of the light to illuminate. P–2267

HEATER

The heater has the following controls:

1. Fan Switch – Turn the switch (Item 1) [B] to activate fan, OFF–LOW–MED–HI.

2. Temperature Control – Move the lever (Item 2) [B] up to increase the temperature; move the lever down to decrease the temperature.

P–2256

WINDSHIELD WASHER TANK (If equipped)

Remove the window washer tank cap and fill with washer fluid (Item 1) [C]. (Wiper/Washer switch (Item 2) [A] is used to activate washer pump.)

NOTE: The entire bottle can be lifted from the mounting bracket for better access for filling fluid.

P–2256

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

CONTROL LEVERS (JOYSTICKS)

The work equipment is operated by using the left and right control levers (joysticks) [A] & [B]. Operation of Left Control Lever (ISO) Arm and Swing (Decal P/N 6587426). The left lever is used to operate the arm and to swing the upperstructure [A]: 1. Arm Out

P–0805

2. Arm Out and Bucket Dump 3. Bucket Dump 4. Arm In and Bucket Dump 5. Arm In 6. Arm In and Bucket Curl 7. Bucket Curl 8. Arm Out and Bucket Curl

Before swinging the upper works, make sure the swing lock is disengaged.

PI–8226

I–2051–0189

Operation of Right Control Lever (ISO) Boom and Bucket (Decal P/N 6587425) The right lever is used to operate the boom and bucket [B]: 1. Boom Lower 2. Boom Lower and Bucket Dump 3. Bucket Dump

P–0803

4. Boom Raise and Bucket Dump 5. Boom Raise 6. Boom Raise and Bucket Curl 7. Bucket Curl 8. Boom Lower and Bucket Curl

Before leaving the machine: • Lower the attachments to the ground. • Stop the engine & remove the key. W–2167–0195 PI–8227

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

CONTROL LEVERS (STANDARD)

The work equipment is operated by using the right and left control levers (joysticks) [A] & [B]. Operation of Left Control Lever (STANDARD) Boom and Swing (Decal P/N 6587428) The left lever is used to operate the boom and swing the upperstructure [A]: 1. Boom Lower

P–0805

2. Boom Lower and Swing Right 3. Swing Right 4. Boom Raise and Swing Right 5. Boom Raise 6. Boom Raise and Swing Left 7. Swing Left 8. Boom Lower and Swing Left

Before swinging the upper works, make sure the swing lock is disengaged.

PI–2864

I–2051–0189

Operation of Right Control Lever (STANDARD) Arm and Bucket (Decal P/N 6587427) The right lever is used to operate the arm and bucket [B]: 1. Arm Out 2. Arm Out and Bucket Dump 3. Bucket Dump

P–0803

4. Arm In and Bucket Dump 5. Arm In 6. Arm In and Bucket Curl 7. Bucket Curl 8. Arm Out and Bucket Curl

Before leaving the machine: • Lower the attachments to the ground. • Stop the engine & remove the key. W–2167–0195 PI–2863

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

SWING LOCK

When the swing locking lever (Item 1) [A] is engaged (locked position), the upperstructure of the excavator is locked to the track frame and will not swing. The upperstructure must be parallel to the track frame to engage the swing lock.

1 P–2176

Lift the swing lock lever (Item 1) [B] to disengage the upperstructure from the track frame. Put the lever in the unlocked position.

AVOID INJURY The swing lock lever must be engaged when transporting the machine. W–2197–0595 P–2179

Swing Control Lever (Joystick)

Never engage the swing control lever when the swing lock pin is engaged. Engage the swing lock pin only after the upper works is parallel with the track frame.

I–2052–0189

P–0805

HORN BUTTON

The horn button (Item 1) [D] is located in the right control lever (joystick) grip.

P–0808

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

SPEED CONTROL LEVER

The speed control lever is used to control the engine speed [A]. 1. LOW IDLE POSITION – Pull the lever backward (position 1) for low idle, (Approximately 1000 RPM).

2. HIGH IDLE POSITION – Push the lever fully forward (position 2) for full engine RPM, (Approximately 2500 RPM).

P–2181

ENGINE STOP CONTROL

Pull the knob (Item 1) [B] up to STOP the engine. (When the engine has stopped, push the stop control knob down to the operating position. This will avoid possible starter damage if engine start–up is attempted and the stop control knob has been left in the OFF position).

P–2178

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

STEERING LEVERS/FOOT PEDALS

Forward and Reverse Travel NOTE: The following procedures describe forward, reverse, right & left as though you were seated in the operator’s seat.

FORWARD

Put the blade so that it is at the front of the machine as you sit in the operator’s seat. Slowly push both steering levers* forward for forward travel. Pull both steering levers backward for reverse travel.

NEUTRAL

*There are also foot pedals to operate the steering levers in the same manner. REVERSE

P–2182

Right Pivot Turn (Forward)

Left Pivot Turn (Forward)

• Check the blade location before traveling.

When the blade is to the rear, operate the steering levers/foot pedals in the opposite direction to when the blade is in the front. • Move the steering levers/foot pedals slowly. Abrupt lever motion will cause the machine to jerk.

W–2138–0189

Turning B–10979 MC–2109

Right Turn Push the left steering lever forward to turn to the right [B] while traveling in a forward direction.

Pull the left steering lever backward to turn to the right [D] while traveling in a reverse direction.

Right Pivot Turn (Reverse)

Left Pivot Turn (Reverse)

Spin–Turn Right Push the left steering lever forward and pull the right steering lever backward [F]. Left Turn Push the right steering lever forward to turn to the left [C] while traveling in a forward direction. B–10979 MC–2109

Pul the right steering lever backward to turn to the left [E] while traveling in a reverse direction. Spin–Turn Left Push the right steering lever forward and pull the left steering lever backward [G].

Counter–Rotation Turn (Right)

Counter–Rotation Turn (Left) B–10979 MC–2109

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

BOOM SWING PEDAL AND LOCK

Raise the pedal lock/foot rest (Item 1) [A] to operate the boom swing pedal. Push the pedal (Item 2) [A] on the right side to swing the boom to the right and push the pedal on the left side to swing the boom to the left.

B–11164

NOTE: The purpose of the boom swing pedal is to offset the boom with respect to the upperstructure for digging close to a structure.

BLADE CONTROL LEVER

The lever (Item 1) [B] is used to raise and lower the blade.

P–2175

Position A – Pushed Forward – Lowers the blade. Position B – Neutral – Blade is stopped and held in position. Position C – Pulled Backward – Raises the blade.

NOTE: Keep the blade lowered when digging to help stabilize the machine.

B C

P–2182

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

AUXILIARY OPERATION PEDAL

A 1

AVOID BURNS Hydraulic fluid, tubes, fittings and quick couplers can get hot when running machine and attachments. Be careful when connecting and disconnecting quick couplers. W–2220–0396

2 P–2175

Raise the pedal lock/foot rest (Item 1) [A] to operate the auxiliary operation pedal.

The pedal (Item 2) [A] controls optional equipment when mounted on the arm. The excavator is equipped with 2–way flow auxiliary lines. Push pedal (Item 2) [A] to activate hydraulic function. Right side of pedal is hydraulic pressure to the female coupler and left is hydraulic pressure to the male coupler.

The female coupler (Item 1) [B] is pressurized, the male coupler (Item 2) [B] is returned when pedal is pushed to the right.

P–0814

Instructions are necessary before operating or servicing machine. Read Operation & Maintenance Manual, and signs (decals) on machine. Follow warnings and instructions in the manuals when making repairs, adjustments or servicing. Check for correct function after adjustments. repairs or service. Failure to follow instructions can cause injury or death. W–2144–0189

Flush Face Couplers Some loaders may have flush face couplers. Wipe the mating surfaces clean (including the outside diameter of the male coupler). To engage, align the ends of the couplers and push straight in. When the couplers are engaged, the locking collar can be turned to prevent unwanted disengagement. To disengage, align the ball and slot on the female coupler then slide the locking collar back.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

DAILY INSPECTION Check the following items before starting each day: • Operator Canopy or Cab (ROPS) and mounting • hardware. • Seat belt and mounting hardware. • Damaged decals, replace as needed. • Air cleaner and intake hoses. • Engine coolant level and for coolant leaks. • Engine oil level and for engine leaks. • Clean engine area of any flammable material. • Hydraulic fluid level and system for leaks. • Grease all pivot points. • Cylinder and attachment pivot points. • Track Tension. • Repair broken and loose parts. Fluids such as engine oil, hydraulic fluid, coolants, etc. must be disposed of in an environmentally safe manner. Some regulations require that certain spills and leaks on the ground must be cleaned in a specific manner. See local, state and federal regulations for correct disposal.

AVOID INJURY OR DEATH When an engine is running in an enclosed area, fresh air must be added to avoid concentration of exhaust fumes. If the engine is stationary, vent the exhaust outside. Exhaust fumes contain odorless, invisible gases which can kill without warning. W–2050–1285

• Engines can have hot parts and hot exhaust gas. Keep flammable material away.

• Do not use machines in atmosphere containing explosive gas.

W–2051–1086

W–2144–0189

STARTING THE ENGINE Normal Starting Procedure (With Engine Warm) Fasten the seat belt. Lower the control console(s) to the locked position. Put all control levers in the neutral position [A]. Make sure the engine stop control knob is down [B]. Turn the key to the START position (Inset) [B]. P–2182

When the engine is started, release the key and it will return to the run (ON) position.

Stop the engine if the warning lights and audible alarm do not go OFF. Check for the trouble before starting the engine again.

Do not engage the starter for longer than 15 seconds at a time. Longer use can damage the starter by overheating. Cool the starter for one minute between uses. I–2034–0284

PI–2824

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P–2181

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

STARTING THE ENGINE (Cont’d)

Cold Temperature Starting Procedure Use the following procedure to make starting easier:

Replace the engine oil with the correct type and viscosity for the anticipated starting temperature. (See Oil Specifications, Page 63.) Make sure the battery is fully charged. Speed Control Lever

Install an engine heater.

P–2181

Do not use ether with glow plugs (preheat) systems. Explosion can result which can cause injury or death. W–2071–1285

Follow the steps under Normal Starting Procedure and repeat the steps below until engine starts: Push the speed control lever fully forward (Position 2) [A]. Turn the key to HEAT position. The light will come on [B]. Preheat the engine for 10 seconds to 30 seconds maximum depending on ambient air temperature [C]. PI–2824

Turn the key to START position and start the engine [B].

Release the key, and it will return to the run (ON) position. When the engine speed increases, move the speed control lever immediately to the idling position (1) [A].

Do not engage the starter for longer than 15 seconds at a time. Longer use can damage the starter by over heating. Cool the starter for one minute between uses.

6589058

I–2034–0284

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

OPERATING PROCEDURE

When operating in water or crossing streams, first check the soil conditions, depth and flow of water. Never operate in water higher than the bottom of the swing circle.

Breaking in a New Machine When operating on a public road or highway, always follow local regulations. For example: Slow Moving Vehicle Sign or Directional Signals may be required.

NOTE: Be careful when removing the machine from water. The engine may become filled with water and damage could result.

A new machine requires careful operation during the first 100 hours to break in various parts.

Do not operate the machine when visibility is poor (fog, mist or smoke).

If a machine is subjected to hard use during the initial operation, the performance and service life will be reduced.

If it is necessary to operate the control levers when moving the machine near a cliff, road shoulders, or sloping ground, stop the machine travel before operating any work equipment levers.

Do the following when operating a new machine: • After starting, let the engine idle for 5 minutes so the engine and components can warm up.

Do not dig under the machine. Check with utility companies, for underground electrical, water, gas lines, etc. Work slowly in areas of underground utilities.

• Avoid operation with heavy loads or at high speeds. • Avoid sudden starting or stopping or abrupt motions.

Do not allow the bucket teeth to contact the ground when swinging the upperstructure.

General Operation Suggestions

Do not move the machine with the bucket in the ground or trench.

Know where the first aid kit and fire extinguisher are and know how to use them. Know how to contact emergency assistance.

Do not use the bucket as a breaker or pile driver. It is better to excavate hard or rocky ground after breaking it with other equipment. This will reduce damage to the machine.

When operating on uneven ground or in places where there are obstacles, do the following: • Operate as slow as possible and avoid sudden changes in direction.

To brake the machine when going down a slope, put the steering levers in NEUTRAL position. This will engage the hydrostatic braking.

• Avoid traveling over objects (such as rocks, trees, stumps, etc.).

When the engine stops on a slope, move the steering levers to the neutral position. Lower the boom/bucket.

When working in wet or soft ground, put planking on the ground to prevent the machine from getting stuck. If the machine is stuck in soft soil, use the following procedure to move the machine to firm ground:

NOTE: The ignition switch must be in the ON position with the engine stopped to activate the accumulator pressure to lower the boom/bucket to the ground.

• If one track or both tracks are stuck in soft soil, push the bucket down against the ground to raise the track (or tracks, one side at a time) off the ground.

Start the engine and resume the operation.

• Place timber (planks) under the track(s) and drive the machine to firm ground. • It may help to put the bucket into the ground in front and move the arm as if you were digging to help move the machine.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

OPERATING PROCEDURES (Cont’d)

TRAVELING DOWN OR BACKING UP SLOPES

AVOID INJURY OR DEATH • Do not travel across or up slopes which are

over 15 degrees to the side, or to the back of machine or 25 degrees to the front. Keep boom centered while traveling. • Keep attachments as low as possible when traveling on slopes or in rough conditions. MC–1878B

W–2198–0595

When going down a slope, control the speed with the steering levers and the speed control lever.

TRAVELING ON SIDE SLOPES

TRAVELING UP SLOPES

15 °Maximum

15° Maximum

When going down grades that exceed 15 degrees, put the machine in the position shown, and run the engine slowly. Operate as slow as possible and avoid sudden changes in lever direction. Avoid traveling over objects (such as rocks, trees, stumps, etc.).

MC–1878C

Keep attachments as low as possible when traveling on slopes or on rough conditions.

RECOMMENDED POSITION FOR WORKING ON A SLOPE

W–2199–0595

Stop the machine travel before moving the upper equipment controls. Never allow the blade to strike a solid object. Damage to the blade or hydraulic cylinder can result. It is recommended to level the work area [C]. If this is not possible, the following procedures should be used: MC–1865C

Do not work on slopes which are over 15 degrees. Slow down the work cycle. Avoid working with the tracks across the slope as this reduces stability and increases the tendency for the machine to slide. Position the excavator with the blade down hill and lowered. Avoid swinging or extending the bucket farther than necessary in a down hill direction. When you must swing the bucket down hill, keep the dipper arm low and skid the bucket downhill. When working with the bucket on the uphill side, keep the bucket as close to the ground as possible. Dump the spoil far enough away from the trench or hole to prevent the possibility of a cave in.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

OPERATING PROCEDURES (Cont’d)

Operating in Water Mud and water should be removed from the machine before parking. If possible, park the machine on boards or concrete to prevent the track or undercarriage from freezing to the ground and preventing machine movement. Do not operate or immerse the Excavator in water higher than the bottom of the swing circle [A].

Water Level

Properly grease the Excavator when it has been operated or immersed in water for a period of time. MC–1857

Water must be removed from the cylinder rods. If water freezes to the cylinder rod, the cylinder seals can be damaged when the rod is retracted.

PARKING THE HYDRAULIC EXCAVATOR Stop the machine on level ground. Lower the attachments to the ground. Run the engine at idle speed for about 5 minutes to allow it to cool.

Pull the engine stop control (Item 1) [B] to stop the engine. NOTE: After the engine has stopped, push the stop control knob down to operating position. This will avoid possible starter damage if engine start–up is attempted with stop control in the OFF position.

PI–2824

P–2178

Turn the key switch to the OFF position (Inset) [B]. Disconnect the seat belt. Remove the key from the switch to prevent operation of machine by unauthorized personnel.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

TRANSPORTING THE HYDRAULIC EXCAVATOR

Make sure the parking brakes on the transport vehicle are engaged and wheels are blocked. Align the ramps with the center of the transport vehicle. Secure the ramps to the truck bed and be sure ramp angle does not exceed 15 degrees. Use metal loading ramps and slip resistant surface. Make sure the ramps are the correct length and width, and can support the weight of the machine. Determine the direction of the track movement before moving the machine (blade forward). Engage the swing lock pin to lock the upperstructure.

P–2279

Move the machine forward onto the transport vehicle [A].

Do not change direction of the machine while it is on the ramps. After loading the machine, position the arm and bucket as shown [B]. Put blocks under the front and rear of the track shoes. Lower the boom. Stop the engine and remove the key. Use the following procedure to fasten the Excavator to the transport vehicle:

P–2277

Fasten holddown chains to the front corners of the blade and to the tie down loop at the rear of the track frame to prevent it from moving when going up or down slopes, or during sudden stops [C] & [D].

Use chain binders to tighten the chains and then safety tie the chain binder levers to prevent loosening. When transporting the machine, observe the rules, motor vehicle laws and vehicle limit ordinances. Use a transport and towing vehicle of adequate length and capacity.

P–2278

Adequately designed ramps of sufficient strength are needed to support the weight of the machine when loading onto a transport vehicle. Wood ramps can break and cause personal injury.

W–2058–0494

P–2275

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

LIFTING THE EXCAVATOR

Fully extend the cylinders of the bucket, arm & boom. Put the work equipment control levers in neutral and engage the swing locking lever.

AVOID INJURY OR DEATH

P–3752

• Use a lifting fixture with sufficient capacity for the weight of the excavator plus any added attachments. • Maintain center of gravity and balance when lifting. • Do not swing boom or upperstructure. Engage the swing locking lever. • Never lift with operator on machine.

W–2202–0595

Install a bolt (Item 1) [A] through the lift plate holes and fasten with a nut. Connect the lifting chain hook to the bolt [A]. Connect the lifting chain hooks to the left and right side of the rear frame (Item 2) [A]. Install a spreader bar (Item 3) [A] above the canopy to prevent the lifting fixture from hitting the ROPS and the rear engine cover.

MC–1857A

2 P–3751

LIFTING A LOAD Do not exceed rated load capacity. (See Lifting Decal, Page 52.)

Use chain assembly (P/N 6665374) for lifting. To install the chain assembly: Extend bucket cylinder fully. Stop the engine. Wrap chain assembly around the arm or the bucket mounting plate [B]. Keep safety hook to the side with a small loop in the chain [B]. Attach the secondary lift system (i.e. cables, chains or slings) to the loop of the chain assembly.

P–3753

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

BUCKET

Removal

2 1

AVOID INJURY OR DEATH Stop the machine on a firm flat surface. When removing or installing attachments (such as a bucket), always have a second person in the operator’s seat, give clear signals and work carefully.

P–2221

W–2140–0189

Select a flat level surface. Put the bucket on the ground. Remove the fasteners from the pivot pins (Items 1 & 2) [A]. Remove the pivot pins and keep them clean. Do not damage the dust seals in the arm and the link. Installation Install the arm into the bucket and align the hole [A]. Install the pivot pin (Item 2) [A]. Attach the link to the other hole and install the pivot pin (Item 1) [A]. Install the fasteners. Add grease to the pivot pins before operation.

Never use attachments or buckets which are not approved by Melroe Company. Buckets and attachments for safe loads of specified densities are approved for each model. Unapproved attachments can cause injury or death.

W–2052–1285

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

CAB/CANOPY

The excavator has an operator canopy (ROPS) as standard equipment. An enclosed cab (ROPS) is provided as an option. Both the canopy and cab provide operator protection from a rollover.

Never modify operator cab by welding, grinding, drilling holes or adding attachments unless instructed to do so by Melroe Company. Changes to the cab can cause loss of operator protection from rollover and falling objects, and result in injury or death.

B–14271

W–2069–1285

CAB/CANOPY FOPS (Falling Object Protective Structure) A cab/canopy FOPS (Falling Object Protective Structure) (Item 1) [A] is available as a field installed accessory. A plastic canopy enclosure kit is available as a field installed accessory (Item 2) [A]. These kits are available through Melroe Parts Sales. See your excavator dealer to order this part. P–8368

Front Window The front window (on the optional cab) provides protection from the elements for the operator. The front window is equipped with a wiper and washer [B].

NOTE: A special application frontal guard is available for the cab (Kit number 6666533) and canopy (Kit number 6666863) and must be used when using the hydraulic breaker on the excavator. Emergency Exit The left door and right rear window provide exits. To exit through the right rear side window: P–8333

Slide the window to the front of the excavator and exit through the side window [C].

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

CAB OPTION

Opening the Front Window Move the four (4) window latch pins in and put them in the unlatched position [A].

P–2251

Grab both window handles and pull the top of the window in [B].

When the top of the window moves in, lift up on the window handles and the window will move up and will pivot in, over the operators head. When the window is over the operators head, lift the bottom of the window up. The top edge of the window will engage the pocket at the top rear of the cab.

P–2253

Hold the bottom of the window up and move the two (2) bottom window latch pins out. Make sure that the pins are secured to the open window latch points [C]. Closing the Front Window Hold the bottom of the window up and move the two (2) window latch pins in and place them in the unlatched position [C]. Grab both window handles and pull the bottom of the window down [B]. When the window is in the down and vertical position, push out at each corner latch point and move the latch pins into the locked position [A].

P–2255

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

320ExcavatorOperation&MaintenanceManual#6724026S/N511721116&Above–OperatingInstructionsSection

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

PREVENTIVE MAINTENANCE AIR CLEANER SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Daily Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ALTERNATOR BELT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 COOLING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Coolant Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Coolant Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 ELECTRICAL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Removal and Installation of the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Service the Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Using a Booster Battery (Jump Starting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ENGINE COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

PREVENTIVE MAINTENANCE

ENGINE LUBRICATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Engine Oil and Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 FINAL DRIVE CASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Checking Oil Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Replacing Final Drive Case Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Filling the Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Fuel Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Fuel Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Fuel System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Removing Air From the Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Checking and Adding Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Diagnostic Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Filter Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Hydraulic Reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 In–Line Filter (S/N 511724187 & Above) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Replacement of the Hydraulic Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Replacement of the Hydraulic Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 JOYSTICK CONTROL CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 ISO to Standard Control Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Standard to ISO Control Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 LUBRICATION OF THE HYDRAULIC EXCAVATOR . . . . . . . . . . . . . . . . . . . 43 SERVICE SCHEDULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 SPARK ARRESTOR MUFFLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 TRACK TENSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

–27–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

MAINTENANCE SAFETY Instructions are necessary before operating or servicing machine, Read Operation & Maintenance Manual, Handbook and signs (decals) on machine. Follow warnings and instructions in the manuals when making repairs, adjustments or servicing. Check for correct function after adjustments, repairs or service. Failure to follow instructions can cause injury or death. W–2003–1089 Safety Alert Symbol: This symbol is used for important safety messages. When you see this symbol, follow the safety message to avoid personal injury or death.

CORRECT

B–10731

B–14148

B–14142

Bobcat without

Use the correct procedure to lift and support the excavator.

Cleaning and maintenance are required daily.

WRONG

Never service the Hydraulic Excavator instructions.

B–14147

B–14141

B–14145

Have good ventilation when welding or grinding painted parts. Wear dust mask when grinding painted parts. Toxic dust and gas can be produced.

Vent exhaust to outside when engine must be run for service. Exhaust system must be tightly sealed. Exhaust fume can kill without warning.

Always lower the bucket and blade to the ground before doing any maintenance. Never modify equipment or add attachments not approved by Melroe Company.

WRONG

B–14146

B–14143

B–6589

Stop, cool and clean engine of flammable materials before checking fluid. Never service or adjust machine with the engine running unless instructed to do so in the manual. Avoid contact with leaking hydraulic fluid or diesel fuel under pressure. It can penetrate the skin or eyes. Never fill fuel tank with engine running, while smoking or when near open flame.

Keep body, jewelry and clothing away from moving parts, electrical contacts, hot parts and exhaust. Wear eye protection to guard from battery acid, compressed springs, fluids under pressure and flying debris when engines are running or tools are used. Use eye protection approved for type of welding. Keep rear door closed except for service. Close and latch door before operating the excavator.

Lead–acid batteries produce flammable and explosive gases. Keep arcs, sparks, flames and lighted tobacco away from batteries. Batteries contain acid which burns eyes or skin on contact. Wear protective clothing. If acid contacts body, flush well with water. For eye contact flush well and get immediate medical attention.

Maintenance procedures which are given in the Operation & Maintenance Manual can be performed by the owner/operator without any specific technical training. Maintenance procedures which are not in this manual must be performed ONLY BY QUALIFIED BOBCAT SERVICE PERSONNEL. Always use genuine Bobcat replacement parts. –28–

8–96

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

SERVICE SCHEDULE Maintenance work must be done at regular intervals. Failure to do so will result in excessive wear and early failures. The service schedule is a guide for correct maintenance of the Hydraulic Excavator. Instructions are necessary before operating or servicing machine. Read Operation & Maintenance Manuals, Handbook and signs (decals) on machine. Follow warnings and instructions in the manuals when making repairs, adjustments or servicing. Check for correct function after adjustments, repairs or service. Failure to follow instructions can cause injury or death.

W–2003–1289

SERVICE SCHEDULE ITEM Engine Air Cleaner Engine Oil Engine Coolant System Indicator Lights Operator Canopy Seat Belt Safety Signs (Decals) Tracks Hydraulic Reservoir All Machinery Pivot Pins Fuel Tank/Fuel Filter Swing Circle Swing Pinion Spark Arrestor Muffler Engine Oil & Filter Alternator Belt Fuel Filters Battery Air Cleaner Hydraulic Filter Cooling System Alternator & Starter Engine Valve Clearance Case Drain Return Filter Cooling System Hydraulic Tank Case Drain Return Screen Final Drive Case

HOURS

SERVICE REQUIRED

8–10

100

250

500 1000

Check & empty dust cap as required. Check the engine oil and add as needed. Check radiator coolant level. Check for correct operation. Check the fastening bolts, nuts & condition of cab. Check the condition & that fasteners are tight. Check for damaged signs (decals); replace as needed. Check & adjust tension. Check fluid level. Lubricate 21 grease fittings. Drain water and sediment from fuel tank/filter. Lubricate 2 grease fittings. Lubricate one grease fitting. Clean spark chamber. Replace oil & filter element. Check & adjust tension. Replace filter elements. Check & clean cable ends & check electrolyte level. Replace the filter element. Replace filter element. Clean the radiator fins. Check the condition. Check & adjust valve clearance. Replace the filter (if equipped). Drain, flush & add new coolant to the cooling system. Change the fluid and change the fill neck strainer. Clean the screen with solvent (if equipped). Change the gear lube.

After the first 250 hours of machine operation do the following: * Change the oil in the final drive case. * Check and adjust engine valve clearance.

–29–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ENGINE COVER

AVOID INJURY OR DEATH Never service or adjust the machine when the engine is running unless instructed to do so in this manual. W–2012–1285

Keep the engine cover closed when operating the machine. W–2141–0189

Open the engine cover to service the engine. Pull on the latch and lift the engine cover up until it is fully raised [A].

P–2218

AIR CLEANER SERVICE See the Service Schedule, Page 29 for the correct service interval. Service the air cleaner as follows: Daily Check Loosen the clamp on the air cleaner [B]. P–2188

Remove the cover (Item 1) [C] and the dust cup (Item 2) [C].

Empty dust cup. Visually inspect the filter element. Do not remove element unless plugged and replacement is necessary.

Filter Replacement Remove the wing nut (Item 3) [C].

2 1 P–2185

Remove the filter element [D]. Check the air cleaner housing for damage.

Wipe the canister and the seal surface clean with a clean cloth. Do Not use compressed air. Check the seal (Item 1) [D] for damage. Do not use an air filter element with a damaged seal.

Install a new air filter element. Install and tighten the wing nut. Install the dust cup and cover so the arrow points up. Check that all the air cleaner hose clamps are tight. P–2187

–30–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

FUEL SYSTEM

Fuel Specification

Use only clean, high quality diesel fuel, Grade No. 1 or Grade No. 2.

The following is suggested blending guideline which should prevent fuel gelling problems. Temp. F° (C°)

No. 2

No.1

+15o(9o)

100% 0% 50% 50% Down to –20o (–29o) Below –20o (29o) 0% 100% For local recommendations, the operator can contact his fuel supplier. P–0805

B Stop and cool the engine before adding fuel. NO SMOKING! Failure to obey warnings can cause an explosion or fire.

W–2063–0887

Filling the Fuel Tank The fuel level in the tank is indicated by the fuel gauge (Item 1) [A] when the ignition key is in the ON position. NOTE: When the fuel level reaches the 1/8 fuel setting, the low fuel light (Item 2) [A] will come ON to alert the operator of this condition. Use the key to unlock the fuel fill door [B].

P–2208

Turn the fill cap (Item 1) [C] to remove it. Use a clean, approved safety container to add fuel to the tank. Add fuel only in an area that has a free movement of air and no open flames or sparks. NO SMOKING!

After the tank is full, install and tighten the fuel fill cap.

Always clean up spilled fuel or oil. Keep heat, flames, sparks or lighted tobacco away from fuel and oil. Failure to use care around combustibles can cause explosion or fire which can result in injury or death.

P–2206

W–2103–1285

Fuel System Maintenance See the Service Schedule, Page 29 for the correct service interval. To remove the water and sediment from the fuel tank, turn the upperstructure until the fuel tank is centered between the rear tracks.

Slowly open the drain valve (Item 1) [D] at the bottom of the fuel tank. Drain the contaminated fuel into a container. When clean fuel flows from the drain valve, close the valve.

P–2232

–31–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

FUEL SYSTEM (Cont’d) Fuel Filters

See the Service Schedule, Page 29 for the correct service interval. To remove water from the filter, open the drain valve (Item 1) [A] at the bottom of the fuel filter. Drain the contaminated fuel into a container. Remove the fuel filter [A].

Clean the area around the filter housing. Put oil on the seal of the new filter element.

P–2217

Install the filter and hand tighten only. Remove the air from the fuel filter (See Below).

Removing Air from the Fuel System

After replacing the fuel filter or after running out of fuel, air must be removed from the fuel system before starting the engine. Open the vent screw (Item 1) [B] on the injection pump.

P–0727

Open the bleed screw on the top of the fuel filter housing (Item 1) [C].

C 1

Squeeze the primer bulb (Item 1) [D] to fill the filter. When fuel, free of air bubbles, comes from the filter housing, close the bleed screw. Leave the vent on the injection pump slightly open.

P–2350

Start the engine. When the engine runs smoothly, close the vent screw on the injection pump.

NOTE: If engine fails to start after above procedure is performed, it will be necessary to bleed the injector lines, do the following: – Loosen the three (3) injector line lock nuts, one turn. – While cranking engine, as fuel emerges from injector lines, slowly tighten the injector line lock nuts.

P–2184

–32–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ENGINE LUBRICATION SYSTEM (Cont’d)

Engine Oil and Filter Replacement (Cont’d) The valve cover oil fill cap can be used for adding oil in place of the dipstick tube, but use a protective, heat resistant shield over the muffler to protect yourself from the hot muffler [A]. COOLING SYSTEM Coolant Level When the engine is cool, remove the radiator cap [B]. The coolant level must be 3/4’’–1’’ (19–25 mm) below the filler neck at the radiator.

P–2209

If the coolant level is low, add premixed coolant (to the radiator. See Coolant Replacement listed below.

Coolant Replacement

Do not remove radiator cap when the engine is hot. You can be seriously burned. W–2070–1285

Turn the upperstructure so there is access to the engine and radiator from between the tracks. Stop the engine.

P–2199

When the engine is cool, loosen and remove the radiator cap [B].

Open the radiator drain valve (Item 1) [C]. Drain all the coolant into a container. When all the coolant is removed, close the drain valve.

Propylene Glycol Add premixed coolant; 47% water and 53% propylene glycol to the recovery tank if the coolant level is low. One gallon and one pint of propylene glycol mixed with one gallon of water is the correct mixture of coolant to provide a –34° F (–37° C) freeze protection.

P–2198

Use a refractometer to check the condition of propylene glycol in your cooling system. Run the engine at idle speed for about 5–10 minutes to remove the air from the cooling system (leave the radiator cap off during this operation). Stop the engine. Check the coolant level and add as needed to bring it 3/4’’–1’’ (19–25 mm) below the filler neck. Install the radiator cap and tighten.

Wear safety glasses to prevent eye injury when any of the following conditions exist: • When fluids are under pressure. • Flying debris or loose material is present. • Engine is running. • Tools are being used.

W–2019–1285

–33–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

COOLING SYSTEM (Cont’d)

Coolant Replacement (Cont’d) NOTE: All cab equipped excavators have an air baffle under the radiator that is fastened to the bottom of the upperstructure [A]. SPARK ARRESTOR MUFFLER See the Service Schedule, Page 29 for service interval for cleaning the spark arrestor muffler. Do not operate the loader with a defective exhaust system.

P–2335

B 1

This loader is factory equipped with a U.S.D.A. Forestry Service approved spark arrestor muffler. It is necessary to do maintenance on this spark arrestor muffler to keep it in working condition. The spark arrestor muffler must be serviced by dumping the spark chamber every 100 hours of operation. If this machine is operated on flammable forest, brush or grass covered land, it must be equipped with a spark arrestor attached to the exhaust system and maintained in working order. Failure to do so will be in violation of California State Law, Section 4442 PRC.

P–5903

Make reference to local laws and regulations for spark arrestor requirements. I–2022–0595

When an engine is running in an enclosed area, fresh air must be added to avoid concentration of exhaust fumes. If the engine is stationary, vent the exhaust outside. Exhaust fumes contain odorless, invisible gases which can kill without warning.

Stop the engine. Open the engine cover. Remove the plug (Item 1) [B] from the bottom of the muffler. Start the engine and run for about 10 seconds while a second person, wearing safety glasses, holds a piece of wood over the outlet of the muffler.

W–2050–1285

Stop engine and allow the muffler to cool before cleaning the spark chamber. Wear safety glasses or goggles. Failure to obey can cause serious injury.

Stop the engine. Install and tighten the plug. Close the engine cover.

W–2011–1285

Never use machine in atmosphere with explosive dust or gases or where exhaust can contact flammable material. Failure to obey warnings can cause injury or death. W–2068–1285

–34–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ALTERNATOR BELT ADJUSTMENT

To adjust the belt tension, use the following procedure: Stop the engine. Open the engine cover. The belt should deflect about 5/8’’ (16 mm) when pressed between the water pump pulley and crankshaft pulley with approximately 22 lbs. (10 kg) pressure [A].

P–2197

If the tension is not correct, loosen the alternator mounting bolt.

Loosen the adjustment bolt [B]. Move the alternator until the belt tension is correct. Tighten the adjustment bolt and alternator mounting bolt. Replace the belt if it has stretched or there are cracks in the belt. Check the pulley grooves, make sure the belt is not in contact with the bottom of the groove in the pulleys.

P–2200

–35–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ELECTRICAL SYSTEM The excavator has a 12 volt, negative ground charging system.

Fuses The following fuses protect these circuits from overload: 1. 25 amp: This fuse protects the light switch circuit and it supplies power to the cab (if equipped) [A]. 2. 25 amp: This fuse protects the ignition circuit, the auxiliary power outlet and the hourmeter [A]. 3. 25 amp: This fuse protects the heater circuit (if equipped) and the rear accessory wire [A]. 4. 5 amp: This fuse protects the cab electrical circuit; wipers, washer and interior light (if equipped) [B]. Replace all fuses with the same type and capacity.

P–2190

NOTE: Before replacing any fuse, find and fix the problem that caused the circuit overload. Make sure the key switch is in the OFF position before replacing the fuse.

Service the Electrical System Open the engine cover [C]. The battery cables must be clean and tight [D]. Remove any acid or corrosion from the battery and cables using a sodium bicarbonate and water solution. Cover the battery terminals and cable ends with battery saver grease.

P–2267

Check for broken or loose connections. If the battery cables are removed for any reason, disconnect the negative (–) cable first and, when installing the battery cables, make the last connection the negative (–) cable to the battery.

With factory equipped battery, no maintenance is needed. This is a maintenance free battery. If the machine has had a Melroe parts replacement battery installed, check the electrolyte level in the battery. (See Battery Manual P/N 6566047 for additional information.)

P–2218

Batteries contain acid which burns eyes and skin on contact. Wear goggles, protective clothing and rubber gloves to keep acid off body.

D (+)

In case of acid contact, wash immediately with water. In case of eye contact get prompt medical attention and wash eye with clean, cool water for at least 15 minutes.

(–)

If electrolyte is taken internally drink large quantities of water or milk! DO NOT induce vomiting. Get prompt medical attention. W–2065–1296

P–2212

–36–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ELECTRICAL SYSTEM (Cont’d)

Using A Booster Battery (Jump Starting) If it is necessary to use a booster battery to start the engine, BE CAREFUL! Make sure the swing lock is in the engaged position. The key switch must be in the OFF position. The booster battery must be 12 volt. Open the engine cover [A]. Connect the end of the first cable to the positive (+) terminal of the booster battery. Connect the other end of the same cable to the starter positive (+) battery cable terminal (Item 1) [B] & [C].

P–2218

Connect the end of the second cable to the negative (–) terminal of the booster battery. Connect the other end of the same cable to the frame (Item 2) [B] & [C].

NOTE: See Cold Temperature Starting Procedure, Page 17. Start the engine. After the engine is running, remove the negative (–) cable (Item 2) [B] & [C] connected to the frame first. Disconnect the cable from the starter terminal (Item 1) [B] & [C].

P–2215

Keep arcs, sparks, flames and lighted tobacco away from batteries. When jumping from booster battery make final connection (negative) at engine frame.

Do not jump start or charge a frozen or damaged battery. Warm battery to 60°F. (16°C.) before connecting to a charger. Unplug charger before connecting or disconnecting cables to battery. Never lean over battery while boosting, testing or charging.

Battery gas can explode and cause serious injury.

W–2066–1296 P–2213

Damage to the alternator can occur if:

• Engine is operated with battery cables

When jump starting from a second machine:

• Battery cables are connected when using a

If ‘‘jump starting’’ the excavator from a battery installed in a second machine, make sure that the second machine is NOT running while using the glow plugs. High voltage spikes from a running machine can burn out the glow plugs.

disconnected.

fast charger or when welding on the loader (Remove both cables from the battery). • Extra battery cables (booster cables) are connected wrong.

I–2060–0195

I–2023–1285

–37–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ELECTRICAL SYSTEM (Cont’d) Removal and Installation of the Battery

Open the hydraulic tank access door [A]. Remove the four (4) bolts from the right side cover [A]. Remove the side cover.

P–2210

Disconnect the negative (–) cable (Item 1) [B] first. Disconnect the positive (+) cable (Item 2) [B].

(+)

2 (–)

Remove the two (2) nuts (Item 1) [C] and remove the hold down clamp (Item 2) [C]. Remove the battery from the compartment [D].

P–2212

Always clean the terminals and the cable ends, even when installing a new battery. Install the battery. Install the hold down clamp and the two (2) nuts.

NOTE: Do not touch any metal to the battery terminals. Connect the battery cables. Connect the negative (–) cable (Item 1) [B] last to prevent sparks at the terminal.

P–2219

Batteries contain acid which burns eyes and skin on contact. Wear goggles, protective clothing and rubber gloves to keep acid off body.

In case of acid contact, wash immediately with water. In case of eye contact get prompt medical attention and wash eye with clean, cool water for at least 15 minutes. If electrolyte is taken internally drink large quantities of water or milk! DO NOT induce vomiting. Get prompt medical attention. W–2065–1296 P–2211

–38–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC SYSTEM

Checking and Adding Fluid

Prior to checking the hydraulic fluid level, retract the arm and bucket cylinder, put the bucket on the ground and raise the blade. I–2076–0795

1 P–2203

Put the machine on a level surface.

Retract the arm and bucket cylinders, put the bucket on the ground and raise the blade. Stop the engine. The hydraulic fluid level must be visible in the center of the sight gauge (Item 1) [A]. If the fluid level is not correct, open the hydraulic tank access door [B].

P–2210

Remove the cap [C].

P–2192

Check the condition of the fill strainer [D]. The strainer must be installed in the fill neck when adding oil.

Add the correct fluid to the reservoir until it is in the center of the sight gauge [A]. (See Fuel, Coolant and Lubricants Chart, Page 63.) Install the cap. Close and lock the access door.

P–2204

–39–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC SYSTEM (Cont’d)

Diagnostic Couplers Diagnostic couplers are located at each section of the hydraulic pump (Item 1) [A]. The couplers can be used to check circuit pressures. (Refer to the Service Manual.)

1 Prior to checking the hydraulic fluid level, retract the arm and bucket cylinder, put the bucket on the ground and raise the blade. I–2076–0795

P–2341

Replacement of the Hydraulic Filter See the Service Schedule, Page 29 for the correct service interval. Open the engine cover.

Remove the filter element (Item 1) [B]. Clean the housing where the filter gasket makes contact. Put clean hydraulic fluid on the gasket. Install the new filter element and hand tighten only. Start the engine. Run the machine through the hydraulic functions. Stop the engine. Check the fluid level at the reservoir and add as needed. Check the filter area for leaks.

P–2189

Hydraulic Reservoir Replacement of the Hydraulic Fluid See the Service Schedule, Page 29 for the correct service interval.

Move the upperstructure so there is clearance for the reservoir drain between the tracks. Retract the arm and bucket cylinders, lower the bucket to the ground. Stop the engine.

P–2226

Remove the hydraulic filter element [B]. Remove the drain plug (Item 1) [C] from the bottom of the reservoir. Drain the fluid into a container. Install the drain plug. Install the filter. (See information above.) Add the correct fluid to the reservoir until it is visible in the sight gauge (approximately 3.75 gals. [14,2 L.] to fill only the reservoir). (See Fuel, Coolant and Lubricants Chart, Page 63.)

Run the machine through the hydraulic functions. Stop the engine. Check the fluid level and add as needed. –40–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC SYSTEM (Cont’d)

Filter Screen The 100 mesh filter in the port block, removes contamination from the fluid returning from the travel motors and swing motor.

When making repairs on hydrostatic and hydraulic systems, clean the work area before disassembly and keep all parts clean. Always use caps and plugs on hoses, tubelines and ports to keep dirt out. Dirt can quickly damage the system.

CD–13001

I–2003–0284

Drain hydraulic reservoir. Remove the rear hose and the rear fitting from the drain block [A].

Screen

Remove the 100 mesh screen filter from the drain block [B]. NOTE: Use finger tip to dislodge the filter screen for removal. Do not use a sharp object as screen will be damaged.

CD–13002

Wash the screen in solvent and dry with compressed air. Inspect the screen for damage and replace as necessary.

Reinstall the screen with the washer surface of the filter toward the fitting. Reinstall the fitting. Reinstall the return line. Fill the hydraulic reservoir with hydraulic fluid. In–Line FIlter (S/N 511724187 & Above) Remove the four (4) bolts from the right side cover [C]. Remove the right side cover.

P–2210

Remove the in–line filter (Item 1) [D] and install a new in–line filter.

P–2388

–41–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

LUBRICATION OF THE HYDRAULIC EXCAVATOR Lubricate the Hydraulic Excavator as specified in the Service Schedule, Page 29 for the best performance of the machine.

A 1

Record the operating hours each time you lubricate the Hydraulic Excavator.

Always use a good quality lithium based multi–purpose grease when lubricating the machine. Apply the lubricant until extra grease shows. Ref. 1. 2. 3.

Description (# of Fittings)

Blade Cylinder Rod End, every 8–10 hours (1) [A]. Blade Pivots, every 8–10 hours (2) [A]. Blade Cylinder Base End, every 8–10 hours (1) [A].

P–2224

B 4. 5. 6. 7.

Boom Swing Cylinder Rod End, every 8–10 hours (1) [B]. Boom Cylinder Base End, every 8–10 hours (1) [B]. Boom Base Pivot, every 8–10 hours (1) [B]. Swing Circle Pinion, every 50 hours (1) [B]. Install 4 pumps of grease from a grease gun into the grease fitting. Rotate the upperstructure 180o and install 4 more pumps of grease into the grease fitting.

4 5 P–2222

C 8. 9.

Boom Swing Bracket Pivot, every 8–10 hours (2) [C]. Frame Swing Bracket Pivot, every 8–10 hours (1) [C].

P–2228

D 10. 11. 12. 13. 14.

Boom Cylinder Rod End, every 8–10 hours (1) [D]. Arm Cylinder Base End, every 8–10 hours (1) [D]. Arm Cylinder Rod End, every 8–10 hours (1) [D]. Arm Base Pivot, every 8–10 hours (1) [D]. Bucket Cylinder Base End, every 8–10 hours (1) [D].

13 14

10 P–2220

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

LUBRICATION OF THE HYDRAULIC EXCAVATOR (Cont’d) Ref. 15. 16. 17.

Description (# of Fittings) Bucket Cylinder Rod End, every 8–10 hours (1) [A]. Bucket Link Pivots, every 8–10 hours (2) [A]. Bucket Pivots, every 8–10 hours (3) [A].

P–2223

18.

Boom Swing Cylinder Base End, every 8–10 hours (1) [B].

NOTE: Access to the grease fitting is from under the upperstructure, right side.

P–2227

19.

Swing Circle Ball Bearing, every 50 hours (2) [C].

NOTE: Do not over grease the swing circle or damage to the seal could result. Install 4 to 5 pumps of grease from a grease gun into each of the 2 grease fittings. Rotate the upperstructure 90o and install 4 to 5 pumps of grease into each of the 2 grease fittings.

P–2230

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

FINAL DRIVE CASE Checking Oil Level (S/N 511721116–511723974)

Put the machine on a level surface. Position the plugs (Item 1) [A] parallel to the ground. Remove one of the plugs (Item 1) [A].

Add gear lube through the hole if the gear lube level is below the hole. (See Fuel, Coolant and Lubricant Chart, Page 63.) Install and tighten the plug. Repeat the procedure for the other side. Replacing Final Drive Case Oil (S/N 511721116–511723974) See the Service Schedule, Page 29 for correct service interval.

P–5906

B 2

Put the machine on a level surface with the plugs positioned as shown in figure [B]. Remove the bottom plug (Item 1) [B] and the top plug (Item 2) [B]. After all the gear lube is removed, install and tighten the bottom plug.

Add .3 quarts (0,3 L) of gear lube to the top plug hole. Install the plug. Move the excavator until the plugs are positioned parallel to the ground [A].

P–5907

Use the same procedure as for Checking Oil Level, (See information above) add additional oil as needed. Repeat the procedure for the other side.

Checking Oil Level (S/N 511723975 & Above) Put the machine on a level surface. Position the plugs (Items 1 & 2) [C]. Remove the plug (Item 2) [C]. The oil level should be at the bottom edge of the hole. Add gear lube through hole (Item 1) [C] if the level is below the hole. (See Fuel, Coolant and Lubrication Chart, Page 63.) Install and tighten the plug(s).

Repeat the procedure for the other side. Replacing Final Drive Case Oil (S/N 511723975 & Above) See the Service Schedule, Page 29 for the correct service interval.

B–14498

D 2

Put the machine a level surface with the plugs (Items 1& 2) [D] positioned as shown. Remove the bottom plug (Item 1) [D]. After all gear lube is removed, rotate the drive motor so the plugs are in the position as shown in [C]. Add .42 quarts (0, L) of gear lube to the top hole (Item 1) [C] and till until oil is level with the bottom of hole (Item 2) [C]. Install the plugs.

Repeat the procedure for the other side. –44–

B–14497

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

TRACK TENSION

NOTE: The wear of the parts on the undercarriage vary with the working conditions and the different types of soil conditions. It is necessary to inspect track tension to maintain the correct tension. (See Service Schedule Page 29 for the correct service interval.) Adjustment Raise one side of the machine (approximately 4 inches) using the boom and arm as shown in [A]. Raise the blade fully and install jackstands under the blade and the track frame [A]. Operate the boom until all machine weight is on the jackstands.

P–2239

Stop the engine.

2.25 – 2.50’’ (57 – 63 mm)

AVOID INJURY Keep fingers and hands out of pinch points when checking the track tension. W–2142–0189

Center Of Track Measure the distance between the frame and the top of the track. If the distance is between 2.25’’–2.50’’ (57–63 mm), the track tension is correct [B].

P–0854

If not, loosen one bolt and remove the other bolt from the cover [C]. Add grease to the fitting (Item 1) [D] until the track tension is correct.

Cover

If track tension is too tight, decrease the track tension pressure by loosening the bleed screw (Item 2) [D] (maximum of 1 turn) and allow grease to flow out of the bleed screw. When the tension is correct, tighten the bleed screw. Repeat the procedure for the other side. If the track tension is still loose after adjusting to the above mentioned limit, it indicates the track is worn. See your dealer for repairs.

P–0845

AVOID INJURY

Bleed Here

Do not loosen the grease fitting more than one complete rotation. Also, be careful not to loosen any part other than the grease fitting. If the grease fitting or any part is loosened too much, it can fly off under high pressure. If the grease does not ooze smoothly, try moving the machine back and forth for a short distance. W–2143–0189

Add Grease Here

B–13134

–45–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

JOYSTICK CONTROL CHANGE 320ExcavatorOperation&MaintenanceManual#6724026S/N511721116&Above–PreventiveMaintenanceSection

ISO to Standard Control Pattern

To change from ISO to STANDARD joystick controls, do the following procedure:

1 2

Open the tool box door. Remove the hose cover plate. Remove the bottom plate from the tool box. Mark and remove hoses (Items 1, 2, 3 & 4) [A] from the bulkhead elbows. P–2348

Install the hoses onto the new locations as shown (Items 1, 2, 3 & 4) [B].

Install new decals (P/N 6587427) onto the right hand console and (P/N 6587428) onto the left hand console.

2 1

After exchange of the hoses, the right joystick will now control arm (raise and lower) and the bucket (curl). The left joystick will control the boom (raise and lower) and the upperstructure (swing). See Service Manual for additional information.

P–2348

Standard to ISO Control Pattern

To change from STANDARD to ISO joystick controls, do the following procedure:

3 4

Open the tool box door. Remove the hose cover plate. Remove the bottom plate from the tool box. Mark and remove hoses (Items 1, 2, 3 & 4) [C] from the bulkhead elbows. P–2348

Install the hoses onto the new locations as shown (Items 1, 2, 3 & 4) [D].

Install new decals (P/N 6587425) onto the right hand console and (P/N 6587426) onto the left hand console.

2 1

4 3

After exchange of the hoses, the right joystick will now control boom (raise and lower) and the bucket (curl). The left joystick will control the arm (raise and lower) and the upperstructure (swing). See Service Manual for additional information.

P–2348

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

MACHINE SIGN TRANSLATIONS WARNING (6588382) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 LIFT CHART (6589743) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 SERVICE SCHEDULE (6528904) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 WARNING (6588380) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 WARNING (6534742, 6577754, 6643355, 6643356) . . . . . . . . . . . . . . . . . . . 56

MACHINE SIGN TRANSLATIONS

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ADVERTENCIA (SPANISH) EVITE UN ACCIDENTE QUE PUEDE SER MORTAL TRANSPORTE DE LA EXCAVADORA • Utilice rampas de acerp de superficie antideslizante y con rebordes. • Asegure las rampas a la plataforma de vehiculo.• Accione el freno de estacionamiento. • Asegure las ruedas delanteras y traseras. • No ponga las rampas con mas de 15° de inclinacion. • El extremo superior de la rampa debe quedar al nivel de la plataforma. • Active el pasador de bloqueo del giro antes de mover la máquina. • Coloque calzos bajo las orugas y disponga cadenas de sujeción. IZADO DE LA EXCAVADORA • Los dispotivos de izado deben tener la capacidad adecuada al peso de la máquina. • Mantener el centro de gravedad y el equilibrio al proceder al izado. • No girar el aguilón o el chasis superior. Embragar la palanca de giro. • No izar nunca estando el operador en la máquina. Vea la indicaciones en los manuales de Manejo y de Mantenimiento.

AVERTISSEMENT (FRENCH) EVITER LES BLESSURES OU LA MORT TRANSPORT DE LA MACHINE • Utiliser des rampes en ancier avec des rebords et une surface antidérapante. • Attacher les rampes au plancher de la remorque. • Enclencher le frein de stationnement. • Caler les roues à l’avant et à l’arrière. • L’inclinaison de la rampe ne doit pas dépasser 15°. • L’extrémité de la rampe doit être dans l’alignement du plancher de la remorque. • Enclencher l’axe de verrouillage d’orientation avant le chargement ou le transport. • Attacher le pelle avec des chaïnes et bloquer les chenilles. LEVAGE DE LA MACHINE • Les câbles de levage au les élingues en nylon dolvent être capables de supporter le polds de la machine. • Maintenir le centre de gravité à l’endroit voulu et toujours garder l’équillibre pendant le levage. • Ne jamais faire tourner la flèche ni la superstructure. Enclencher l’axe de verrouillage d’orientation. • Ne jamais lever la pelle quand l’opérateur a’y trouve. Se reporter au manuel de l’Opérateur et d’Entretien pour plus de renseignements.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

MACHINE SIGN TRANSLATIONS (Cont’d)

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

PROGRAMA DE MANTENIMIENTO 320 (SPANISH) (Consultar en el Protuario del Conductor las Instrucciones y Especificaciones) CADA 8–10 HORAS 1. 2. 3. 4. 5. 6. 7. 8.

Comprobar el nivel de refrigerante del motor. Comprobar el nivel de aceite del motor. Comprobar el nivel del líquido hidráulico. Comprobar el indicador de estado del depurador de aire. Comprobar y ajustar la tensión de la cadena. Comprobar las pilotos indicadores de un correcto funcionamiento. Comprobar el estado de la cabina abierta/cerrada y los elementos de fijación. Comprobar el estado del cinturón de seguridad y los elementos de fijación

9. Comprobar posibles daños en las etiquetas adhesivas – Sustituirlas si es necesario. 10. Engrasar todos los puntos de articulación de la máquina (21 engrasadores). CADA 50 HORAS 11. Enagrasar el piñón de giro y la corona de giro (3 engrasadores). 12. Drenar el aqua y los sedimentos del depósito y el filtro de combustible. 13. Comprobar el estado de la correa de ventilador (al cabo de 50 horas). –53–

CADA 100 HORAS 14. Sustituir el aceite del motor y el filtro (al cado de 50 horas). 15. Comprobar y ajustar la correa del ventilador si es nesesario. 16. Silenciador parachispas – Limpiar la cámara de chispas. 17. Sustituir el filtro hidráulico. (al cabo de 100 horas). 18. Sustituir el aceite en el cárter de ambos lados del mecanismo final. (al cado be 100 horas). 19. Sustituir el filtro hidráulico de drenaje del cárter. (al cabo de 100 horas). CADA 250 HORAS 20. Sustituir el filtro de gasoil. 21. Comprobar el nivel de aceite en el cárter de ambos lados del mecanismo final. 22. Comprobar el estado de la batería – Limpiar los terminales de los cables. CADA 500 HORAS 23. Limpiar las aletas del radiador. 24. Sustituir el filtro hidráulico. 25. Cambiar el elemento del filtro de aire. 26. Comprobar las conexiones del alternador y el motor de arranque. 27. Comprobar y ajustar la holgura de las válvulas del motor. 28. Sustituir el filtro hidráulico de drenaje del cárter. 320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

CADA 1000 HORAS O CADA 6 MESES 29. Sustituir el aceite en el cárter de ambos lados del mecanismo final. 30. Drenar y lavar abundantemente el sistema de refrigeración – Cambiar el refrigerante. 31. Sustituir el líquido hidráulico y el filtro – Limpiar el depósito.

TOUTES LES 1000 HEURES OU 6 MOIS 29. Remplacer l’huile des réducteurs de traction. 30. Vidanger et rincer le circuit de refroidissement – En remplacer le liquide. 31. Remplacer l’huile et le filtre hydraulique – Nettoyer le réservoir.

PLAN D’ENTRETIEN 320 (FRENCH) (Se reporter au Manual d’Opérateur et d’Entretien pour les Instructions et Spécifications) TOUTES LES 8–10 HEURES 1. Vérifier le niveau de liquide de refroidssement du moteur. 2. Vérifier le niveau d’huile moteur. 3. Vérifier le niveau d’huile hydraulique. 4. Vérifier le témoin de colmatage du filtre à air. 5. Vérifier et régler le tension des chenilles. 6. Vérifier le bon fonctionnement des tampes–témoins. 7. Vérifier l’état de la cabine/protection d’opérateur et de la boulonnerie. 8. Vérifier l’état de la ceinture de sécurité et de sa boulonnerie. 9. Vérifier l’état des autocollante – Les remplacer au besoin. 10. Graisser tous les points d’articulation de la machine (21 points). TOUTES LES 50 HEURES 11. Graisser le pignon et la couronne de rotation (3 points). 12. Drainer l’eau et les sédiments du réservoir et du filtre à gazole. 13. Vérifier l’état de la courroie de ventilateur (Premières 50 heures). TOUTES LES 100 HEURES 14. Remplacer l’huile moteur et le filtre (premières 50 heures). 15. Vérifier la courroie de ventilateur et la retendre si besoin. 16. Nettoyer la chambre intérieure de l’echappement pare–étincelles. 17. Remplacer le filtre hydraulique (Premières 100 heures). 18. Remplacer l’huile des réducteurs de traction (Premières 100 heures). 19. Remplacer le filtre des drains hydrauliques (Premières 100 heures). TOUTES LES 250 HEURES 20. Remplacer le filtre à gazole. 21. Vérifier le niveau d’huile dans les réducteurs de traction. 22. Vérifier l’état de la batterie–Nettoyer les bomes. TOUTES LES 500 HEURES 23. Nettoyer les ailettes du radiateur. 24. Remplacer le filtre hydraulique. 25. Remplacer l’élément de filtre à air, 26. Vérifier les connexions de l’alternateur et du démarreur. 27. Vérifier et régler le jeu des coupapes. 28. Remplacer le filtre des drains hydrauliques.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ADVERTENCIA (SPANISH)

AVERTISSEMENT (FRENCH)

EVITE UN ACCIDENTE QUE PUEDE SER MORTAL

EVITER DES BLESSURES OU LA MORT

Lea detenidamente el Manuel de Manejo antes de utilizar la cargadora.

Lire et comprendre le Manuel de l’operateur avant d’utiliser la pelle.

Utilice el cinturón bien ajustado. Accione los mandos únicamente ocupando el asiento de la máquina.

Serrer spogneusement la ceinture de sécurite. N’actionner les commandes ou à partir du siége de l’operateur.

Trabaje siempre con una cabina de protección. No altere los equipos. No utilice implementos que no estén aprobados por Melroe.

Toujours utiliser une cabine de protection. Ne jamais modifier l’equipement ni ajouter des accessoires non aprouves par Melroe.

No circule por terreno escarpado o superficies inestables..

Eviter les endroits escarpes ou les surfaces instables.

No utilice nunca los mandos como agarraderos para subir a la máquina.

Ne jamais se servir des commandes pour monter dans la cabine.

Asegúrese de que no hay nadie dentro del radio de giro. No circule ni gire con la cuchars desplegada.

S’assurer quil n’y a personne dans la zone de balayage maximal. Ne jamais rouler ou tourner avec le godet allongé.

Enpendientes, circule con la parte más pesada hacia arriba.

En pente, maintenir le côte lourd vers le haut.

Para extender la pluma a un lado: • Lleve la carga apenas levantada. • Gire lentamente. • No sobrepase la capacida nominal véase la table de capacidades).

En cas de déport du côte des chenilles: • Tenir la charge vers le bas. • Faire tourner lentement. • Ne pas dépasser la capacité de charge – se reporter au tableau des charges de levage.

ANTES DE BAJAR DEL EQUIPO:

AVANT DE QUITTER LA PELLE:

1. Baje el implemento al suelo.

1. Abaisser l’equipement au sol.

2. Pare el motor.

2. Arréter le moteur.

–55–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

ADVERTENCIA (SPANISH) EVITE UN ACCIDENTE QUE PUEDE SER MORTAL No afloje el engrasador más de 1–1/2 vuelta.

ADVERTENCIA (SPANISH)

No afloje ninguna otra pieza. Está cargado con grasa a presión.

NO SE EXPONGA A SUFRIR LESIONES

AVERTISSEMENT (FRENCH)

• NO ABRA LA PUERTA CON EL MOTOR EN MARCHA, SOLO SI ES NECESARIO PARA EL MANTENMIENTO.

• NO SE ACERQUE AL VENTILADOR NI A OTRAS PIEZAS MOVILES.

EVITER DES BLESSURES OU LA MORT Ne pas deserrer le graisseur de plus de 1–1/2 tour.

AVERTISSEMENT (FRENCH)

Ne pas deserrer une pièce autre que le graisseur. La graisse se trouve sous haute pession.

ÉVITER LES BLESSURES • NE PAS OUVRIR LA PORTE D’ACCÉS AU MOTEUR QUAND IL TOURNE, SAUF POUR ENTRETIEN.

• SE TENIR À L’ÉCART DU VENTILATEUR ET DES ORGANES MOBILES.

ADVERTENCIA (SPANISH) EL CILINDRO CONTIENE GAS BAJO ALTA PRESION. EL ABNRIR EL CILINDRO PUEDE SOLTAR LA VARILLA Y CAUSAR HERIDAS O LA MUERTE.

AVERTISSEMENT (FRENCH) LES VERINS RENFERMENT UN GAZ SOUS PRESSION. NE JAMAIS OUVRIR UN VERIN CAR LA TIGE RISQUE DE S’ECHAPPER BRUTALEMENT ET DE CAUSER DES BLESSURES OU MEME LA MORT.

ADVERTENCIA (SPANISH) • NO AFLOJE EL TAPON DE LLENADO SI EL MOTOR ESTA CALIENTE.

• SE EXPONE A SUFRIR UNA QUEMADURA GRAVE. AVERTISSEMENT (FRENCH) • NE PAS DESSERRER LE BOUCHON DE VIDANGE QUAND LE MOTEUR EST CHAUD.

• DANGER DE BRÛLURES GRAVES.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

SPECIFICATIONS BUCKET SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 COOLANT MIXTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 ENGINE OIL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 FUEL, COOLANT AND LUBRICANT CHART . . . . . . . . . . . . . . . . . . . . . . . . . 63 HYDRAULIC EXCAVATOR SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 60 Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Digging Force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Hydraulic Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Lifting Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Machine Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Std. Track Shoes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Swing System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Undercarriage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

SPECIFICATIONS

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC EXCAVATOR

S All dimensions are shown in inches. Respective metric dimensions are given in

SPECIFICATIONS

S Where applicable, specification conform to SAE or ISO standards and are subject to

millimeters enclosed by parentheses.

change without notice.

Machine Dimensions

88.34 (2243.9)

48.18 (1223.9) 9.8 (250) 28.7 (730)

17.5 (443) 1 (26)

10.3 (262)

43.8 (1112)

38.6 (980)

36 (914)

MC–1862

109.5 (2781.3) 58.2 (1480) 74 (1883)

151.59 (3850) 23.6 (600)

MC–1859

20.1 (510)

54.2 (1377) 153.2 (3892) 149.5 (3799) 67.8 (1722)

194°

135.43 (3440) MC–1888

107.9 (2740)

96.55 (2452) 7.3 (185.5)

3.98 (101)

61.3 (1557) 86.57 (2199)

90 (2294)

MC–1884

–59–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

HYDRAULIC EXCAVATOR SPECIFICATIONS Lifting Capacity

SPECIFICATIONS

320

WEIGHTS Operating Weight (Includes 20” Bucket)

ROPS Canopy – 3180 Lbs. (1442 kg) ROPS Cab – 3440 Lbs. (1560 kg) 1.1 MPH (1,74 km/hr.) 2.1 MPH (3,43 km/hr.)

Travel Speed – Lo . . . . . . . . . . . . . . . . . . High . . . . . . . . . . . . . . . . CONTROLS Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . Excavator . . . . . . . . . . . . . . . . . . . . . . . . .

Two Hand or Foot Levers Two pilot–operated joysticks control boom, bucket, dipperstick and cab swing A foot pedal controls boom swing and the blade is controlled by a separate lever.

ENGINE Make . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Horsepower . . . . . . . . . . . . . . . . . . . . . . . Maximum Governed RPM (Full Load) . . . . . . . . . . . . . . . . . . . . . . . . . Torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . Number of Cylinders . . . . . . . . . . . . . . . Displacement . . . . . . . . . . . . . . . . . . . . . . Bore x Stroke . . . . . . . . . . . . . . . . . . . . . . Lubrication . . . . . . . . . . . . . . . . . . . . . . . . Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . .

3000 RPM 32 ft.–lbs. (43,4 Nm) @ 1800 RPM Three 43.9 cu.–in. (0,72L) 2.64” x 2.68” (67mm x 68mm) Forced Cartridge Type – Full Flow Dry replaceable paper cartridge

ELECTRICAL Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . Alternator . . . . . . . . . . . . . . . . . . . . . . . . . Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 Volt, Reduction Drive 12 Volt, 40 Amps. 12 Volt, 530 Cold Crank Amps

Kubota D722–E Diesel 15.7 HP (11,7 Kw) @ 3000 RPM

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

SPECIFICATIONS (Cont’d) HYDRAULIC SYSTEM Number of Pumps . . . . . . . . . . . . . . . . . . . Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . System Relief Setting Implement Circuits . . . . . . . . . . . . . . . . Travel Circuits . . . . . . . . . . . . . . . . . . . . Swing Circuits . . . . . . . . . . . . . . . . . . . . . Auxiliary Flow . . . . . . . . . . . . . . . . . . . . . . Control Valve . . . . . . . . . . . . . . . . . . . . . . . Drive Motors . . . . . . . . . . . . . . . . . . . . . . . Swing Motor . . . . . . . . . . . . . . . . . . . . . . . . Hydraulic Function Time Bucket . . . . . . . . . . . . . . . . . . . . . . . . . . Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boom . . . . . . . . . . . . . . . . . . . . . . . . . . . Boom Swing . . . . . . . . . . . . . . . . . . . . . Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . SWING SYSTEM Swing Drive . . . . . . . . . . . . . . . . . . . . . . . . Swing Circle . . . . . . . . . . . . . . . . . . . . . . . . Swing Motor . . . . . . . . . . . . . . . . . . . . . . . . HYDRAULIC CYLINDERS Boom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dipperstick . . . . . . . . . . . . . . . . . . . . . . . Bucket . . . . . . . . . . . . . . . . . . . . . . . . . . . . Boom Swing . . . . . . . . . . . . . . . . . . . . . . Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DRIVE SYSTEM Final Drive . . . . . . . . . . . . . . . . . . . . . . . . . Type of Reduction . . . . . . . . . . . . . . . . . . Max Drawbar Pull . . . . . . . . . . . . . . . . . . . Gradability Traveling Down or Backing Up Slopes . . . . . . . . . . . . . . . Traveling on Side Slopes . . . . . . . . . . . . . . . . . . . . . . . . . . Traveling Up Slopes Forward . . . . . . . . . . . . . . . . . . . . . . . . . BRAKES Travel Service . . . . . . . . . . . . . . . . . . . . . . . . . . . Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . Swing Service . . . . . . . . . . . . . . . . . . . . . . . . . . . Holding . . . . . . . . . . . . . . . . . . . . . . . . . . . UNDERCARRIAGE Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

320 Three Triple Section Gear Pump 1 –8 GPM (30,3 L/min.) 2 – 4 GPM (15,0 L/min.) 2500 PSI (17241 kPa) 2500 PSI (17241 kPa) 725 – 775 PSI (5000 – 5345 kPa) 8.0 GPM (30 L/min.) 10 Spool Two Axial Piston Motors Orbit Motor Curl 2.0 Sec. Retract 2.4 Sec. Raise 3.9 Sec. Left 4.0 Sec. Raise 1.4 Sec.

Dump,1.2 Sec. Extend 1.6 Sec. Lower 2.6 Sec. Right 3.4 Sec. Lower 1.0 Sec.

Orbit Motor Connected to a Planetary Drive Single Row Shear Type Ball Bearings with an Internal Gear Built into Swing Circle 11.2 RPM Bore Dia. in. (mm) Rod Dia. in. (mm) Stroke in. (mm) 2.38 (60) 1.38 (35) 13.46 (342) 2.38 (60) 1.50 (38) 16.57 (421) 2.25 (57) 1.50 (38) 15.16 (385) 3.25 (83) 1.38 (35) 14.71 (374) 2.38 (60) 1.38 (35) 2.76 (70) Each Track is Independently Driven by an Axial Piston Motor Two Stage Planetary Gear Reduction 36.8:1 3660 (1660 kg) 25_ 15_ 15_ Hydraulic Lock on Motor Hydraulic Lock on Motor Hydraulic Lock on Motor Pin Lock Crawler–Tractor Design Undercarriage. Sealed Track Rollers with Reinforced Box–Section Track Roller Frame. Grease Type Track Adjusters with Shock Absorbing Recoil Springs.

STD TRACK SHOES Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No. of Shoes . . . . . . . . . . . . . . . . . . . . . . . No of Track Rollers . . . . . . . . . . . . . . . . . Ground Pressure . . . . . . . . . . . . . . . . . . . CAPACITIES Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . Radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Oil & Filter . . . . . . . . . . . . . . . . . . Hydraulic Reservoir . . . . . . . . . . . . . . . . . DIGGING FORCE Dipperstick . . . . . . . . . . . . . . . . . . . . . . . . . Bucket . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rubber 9.84” (250 mm) Single Assembly Three Each Side 3.38 PSI (23,3 kPa) 6.5 gal. (24.6 L) 1.5 gal. (5,7 L) 3.4 qts. (3,2 L) 3.65 gal. (13,8 L) 1971 lbs. (8768 N) 3408 lbs (15160 N) –61–

320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

FUEL, COOLANT AND LUBRICANTS Use this chart for correct selection of Fuel, Coolant and Lubricants. AMBIENT TEMPERATURE RESERVOIR

KIND OF FLUID

Engine oil pan

Use SAE Viscosity Number as Listed With API Classification CD or Better

CAPACITY

F° –30 –20 –10 0 +10 +20+30 +40 +50 +60 +70 +80 +90 +100 C° –34 –29 –23 –18–13 –7 –1 +4 +10 +15 +21 +27 +32 +38

Refill 4.5 qts. (4,3 L)

SAE 10W–30 SAE 15W–40 SAE 5W–30 SAE 30 SAE 20W/20 SAE 10W

Fuel Tank

Diesel Fuel

6.5 gals (24,6 L)

No. 1 No. 2

Cooling System

Coolane Mixture**

Hydraulic Tank

Bobcat Fluid 6563328*

Tank Cap. 3.65 gals (13,8 L) System Cap. 7.15 gals. (27,1 L)

Final Drive Case (each)

90W Gear

0.3 qts. (0,3 L)

50/50 Water & Anti–Freeze

6.0 qts. (5,7 L)

* If Bobcat fluid (P/N 6563328) is not available, use Engine Oil SAE 10W–30/10W–40, Class SE, or better. ENGINE OIL SPECIFICATIONS

** COOLANT MIXTURE

Description

Propylene Glycol (Factory Installed)

When fuel sulphur content is less than 0.5% change the engine oil and filter as shown in the Service Schedule Page 29.

Add premixed coolant; 47% water and 53% propylene glycol to the recovery tank if the coolant level is low.

Change engine oil and filter according to the following chart if fuel sulphur content is above 0.5%. Fuel Sulphur Content

Change Interval Of Engine & Oil Filter

0.5 to 1.0% Above 1.0%

1/2 of Regular Interval 1/4 of Regular Interval

One gallon and one pint of propylene glycol mixed with one gallon of water is the correct mixture of coolant to provide a –34°F (–37°C) freeze protection. Use a refractometer to check the condition of propylene glycol in your cooling system.

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

BUCKET SPECIFICATIONS 320ExcavatorOperation&MaintenanceManual#6724026S/N511721116&Above–SpecificationsSection

MC–1411

Bucket Size

Capacity SAE Heaped

Shipped Weight

10.5 in. (268 mm) 12.5 in. (318 mm) 16.5 in. (418 mm) 20.4 in. (518 mm)

.65 cu. ft. (0,018 cu.m.) .81 cu. ft. (0,023 cu.m.) 1.21 cu. ft. (0,034 cu.m.) 1.55 cu. ft. (0,044 cu.m.)

54.7 lbs. (24,8 kg) 63.6 lbs. (28,8 kg) 72.9 lbs. (33,1 kg) 85.6 lbs. (38.8 kg)

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320 (S/N 511721116 & Above) Excavator Operation & Maintenance Manual

–4

540, 543 Loader Service Manual

WARRANTY EXCAVATOR The Melroe Company warrants to its authorized dealer and authorized excavator dealers of Melroe Equipment, Ltd., who in turn, warrants to the original buyer (owner) that each Bobcat Excavator will be free from proven defects in material and workmanship for 12 months after delivery to the owner. During the warranty period, the authorized selling Melroe Excavator dealer shall repair or replace, at his option, without charge for parts and labor, any part of the Melroe Excavator product which fails because of defects in material and workmanship. The owner shall provide the authorized excavator dealer with prompt written notice of the defect and allow reasonable time for replacement or repair. Melroe may, at its option, request failed parts to be returned to the factory. Travel time of mechanics and transportation of the Melroe product to the authorized excavator dealer for warranty work are the responsibility of the owner. Warranty does not cover replacement of scheduled service items such as oil, filters, turn–up parts, and other high–wear items. The warranty does not cover damages resulting from abuse, accidents, alterations, air flow obstructions, or failure to maintain or use the Melroe attachment according to the instructions applicable to it. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES (EXCEPT THOSE OF TITLE), EXPRESSED OR IMPLIED, AND THERE ARE NO WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHORIZED SELLING DEALER OR MELROE BE LIABLE FOR DOWNTIME EXPENSES, LOSS OF MACHINE USE OTHER INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES.

6570375 (1–87) Revised (3–96)

Printed in U.S.A.