1995 Porsche 911 Carrera (993) Service Repair Manual by 163961dd2

Ca~~a.

911 Carrera (993)

Preface

Preface Structure The "Technical Litenure" for the "911 Carrera (993)" model is basically structured as before, i.e. the structure follows the familiar repair groups. A new feature is that the structure includes the main groups 0 to 9 and the main group D.

Main groups:

Complete vehicle -General

Engine Fuel, exhaust, engine electrical system Transmission Chassis

2 3 4 5 6 7

8 9 D

Body Body equipment, outside Body equipment, interior Air conditioning Electrical system Diagnosis

Layout The layout in the below items remains unchanged throughout the repair manual

1. Table of tightening torques

2. 3.

Special tools required Exploded views Legends for the exploded views Assembly notes / use of special tools

As a new feature, however, the former item 6 (Repair group diagnosis) is no longer filed in the volume corresponding to the respective repair group. The Diagnosis test plans I diagnosis procedures have been combined in a separate Diagnosis volume broken down according to the main groups 0 to 9. Another new feature is that the contents of the "Service Information Technik" are indicated in the Repair Manual. This brochure concentrates on a description of the design and function of components and of the new features introduced for a particular model year.

Preface

911 Carrera (993)

Service Number All major repair procedures and repair descriptions are identified by a two- or four-digit Service Number completed by two additional digits to identify the work that corresponds to the first six digits of the working position number in the Working Times and Damage Catalog.

Example:

Presentation 30 37 37 50

30 37 37

Dismantling and assembling clutch control shaft

in the various documents Working position no. from Working Times and Damage Catalog, consisting of repair group, component designation,

activity and index

30 37 37

Six-digit number in Repair Manual, consisting of repair group, component designation and activity

3037

Service number in Service Information, consisting of repair group and component designation

Goal The introduction of a service number in the "technical literature" is intended to facilitate standardization and positive identification to allow direct cross-referencing among the various documents. This is of particular importance with regard to the use of electronic media.

Structure

of the Repair Manual

This Repair Manual describes all the important operations that require special instructions to ensure proper completion. This manual is an essential source of information for the shop foreman and the shop mechanics as the information in this manual must be observed at all times to keep the vehicle in safe and roadworthy condition. The basic safety rules of course also apply without exception to all repairs on motor vehicles.

Breakdown 1. 2. 3. 4. 5.

Overview of repair groups Registration sheet for supplements List of contents Technical data Repair groups

Breakdown 1. 2. 3. 4. 5. 6.

of the Repair Manual

of the repair groups

Table of tightening torques Special tools required Exploded views Legends for the exploded views Assembly notes / use of special tools Diagnosis for repair groups

The Repair Manual will be updated regularly with supplements which must be filed immediately to maintain the usefulness of the manual. Appropriate entries must be made in the registration sheet to prove that the manual is complete. The contents of the Repair Manual will be supplemented by Technical Information Bulletins which will be integrated into the manual from time to time. Desciptions of design and function can be found in the service training course reference material.

Layout of the exploded

view

911Canora(9931 E"9I...Cy"-"'~.v_alvo

15-'

'5 7037Dlsmanll1ng andassembling cylln.., "...

p.~.~~"-,-I"'3

-Repair

C -Type D -Page

group. text of repair vehicle number

including "Service

-Impressum,

G -Diagram -Special

group, numbers

E -Operation, F

No." and "Title"

supplement number, year of printing item number in dismantling sequence

notes for removal or installation

The assembly notes/Special Tool lists following the exploded view are always arranged in the order of text -+ diagram.

15 --

911 Carrera (993)

Volume I: General

Repair group survey

Overall vehicle -General Maintenance, diagnosis

Engine

Engine Engine Engine Engine Engine

10 13 15 17 19

Engine -Crankcase, mounting -Crankshaft, pistons -Cylinder head, valve drive -Lubrication -Cooling

Fuel, exhaust system, engine electrical

system

Fuel supply, control Exhaust system -Turbocharging Fuel system, electronic injection Fuel system, K-Jetronic Exhaust system Starter, power supply, GRA Ignition system

20 21 24 25

Volume II:

Transmission

Transmission Manual transmission

Clutch, Manual Manual Final

control transmission

-Controls,

transmission

-Gears,

drive,

differential,

Volume III:

Transmission

Transmission Automatic transmission

Automatic

transmission

Automatic transmission Automatic transmission Final drive, differential,

26 27

case shafts,

differential

operation

3 -Torque

converter

-Controls, -Gears, differential

case control lock

32 37 38 39

Volume IV:

Chassis

Front

wheel

suspension,

drive

shaft

Rear

wheel

suspension,

drive

shaft

Wheels, tires, alignment Anti-Lock System (ABS) Brakes -Mechanical Brakes -Hydraulics, regulator, Steering

inner

lock

30 34 35 39

booster

40 42 44 45 46 47 48

Volume V: Body

Body Body

front

section

Body Body

center section, rear section

Hoods, lids Front doors,

Central

Exterior Sunroof Soft top,

frame

Locking

System

body equipment

window

Exterior

equipment

control

equipment,

Interior

passenger

50 51 53 55 57

hardtop

Bumpers Glasses, Interior

roof,

protection

body equipment

60 61 63 64 66 68

Trim, insulation Seat frames Seat upholstery, covers

70 72 74

Volume VI:

Air conditioning

Air conditioning Vehicle electrics

Heater

80 85 87 88

Ventilation Air conditioning Auxiliary

air conditioning

system

Electrical

system

Instruments,

alarm

90 91 92 94 96

Radio, telephone, Windshield wipers Exterior Interior

lights, lights,

lamps, lamps,

Volume VII:

Electrical

Wiring diagrams

Wiring

Volume VIII:

Diagnosis

Self-diagnosis DME Diagnosis

system

Alarm

switches switches

9 97

Tiptronic Diagnosis PDAS Diagnosis ASS Diagnosis Airbag Heater

on-board computer and washer

Diagnosis Diagnosis Diagnosis

D 03 24 37 39

45 68 80 90

The

Repair

Manual

wheel

drive).

The

in this

Manual.

"911

Descriptions tive

911

pages tate

of the 911 911

included

distinction,

after the

The

the

that

page

indicated

deviate

for the

Overall

Technical data.

Maintenance, diagnosis

03 20 00

Additional Maintenance. service.

start

in the

911

sheet) with

the

911

covered

Carrera

by the

header

Carrera

of both

(separation will

includes model

descriptions

numbering

Vehicle

also

basic

is also

repair

cover

page

is the

(993)"

operations

section.

(993)

Carrera

of repair

Carrera

models have

the

4 manual

repair

of each

4 will are

be included

Carrera

after

the

by a cover 4" heading.

All

facili-

-General 0 -1

...

.03

-1

.03-23

Engine

Tightening torques for the engine

Engine-

Crankcase,

Tightening Removing

and torques:

Mounting

installing

Removing

the

crankcase. and repairing

assembling

engine. and

installing

the

10 -1

engine.

10 10

respec-

page.

100.

03 80 00

100119

fourdescribed

page.

separated

"911

(993

operations

10 -11 SpeciaITooI9111/3 Measuring Reworkingandremaining Disassembling

the and

the

crankcase. engine.

10 -13

100137

10 -17

1010

10 -31

101003

10 -33

101049

Engine -Crankshaft,

1301

Engine Identification

holder.

Pistons

crankcase

engine

number

1310 1348

Connecting Dismantling Crankshaft

-Standard rod and

weight assembling

-35

and groups.

Repair crankshaft.

Dimensions.

and

engine

type.

...13-

1 3

...13-

134002

...13-

131337

...13-

Table of contents Printed if! qermanv .12. 1995 .

Volume

Table of contents

134038 135919 131003 131037

Pistons. Checking Removing Measuring Dismantling

and

and pistons

and

adjustinginstalling

assembling assembling

and

cylinders drive crankshaft

connecting pistonsbelts.

oil

and

seal.

911 Carrera (993)

13 -10a

rods. cylinders.

13 -11 13-15 13-17

1310

13-23

137805

13 -29

Engine -Cylinder

15 70 37

Checking Dismantling Measuringvalvelifters Replacing Measuring Removing Dismantling

valve andvalve and the

and and and

Head, Valve Drive

adjusting valves. installing guides guides. assembling assembling

installed valve

cylinder chain camshaft seal.

length

housing head. housings. of

valve with

springs. camshaft

drive.

15 -1

15 59 04

15 -7b

15 75 02

15-

15 75 56

15 -8b

15 62 04

15-

15 -8e

15 65 06 15 63 19

15- 8g 15- 9 15-15 15-21

15 03 37 15 31 37 15 05

Camshafts, Checking Determining Dismantling Removing Checkingintermediateshaft

and and timing. andparallelity adjusting installing assembling

camshafts. camshaft chain

intermediatesprockets.

housing

shaft. seal.

15 31 37 15 05 06

15 -23

15 30 37

15-31

15 -25

15 -33

15 38 19

15 -35

15 20

Engine -Lubrication

172638

Remove and reinstall pressure-regulating

171030

Cleaning crankcase (oil pressure)

17 -3

170301

Checking oil pressure

17-

1700 1700

Lubrication (Engine Lubrication (Engine oil circuit diagram)

17 -7

173737

Dismantling and assembling oil temperature regulator housing.

17 -9

Fuel, exhaust system, engine electrical

Fuel Supply, Operation

20 02 01

Checking fuel pump pressure delivery.

20 66 01

valve (Relief valve / Safety / valve)17 -1

system

20 -1 20 -3

Fuel

2404

Checking Test

System,

specifications.

Electronic

idle idle

speed speed

Injection

and

CO CO

level level

(vehicle

with without

cat.

converter)

...

..24

-1

..24

-3

..24

-5

2404 2404 2446 19

Removing

and

installing

intake

distributor

(injection

system

components)

.24

24 46 37

911 Dismantling

Carrera

and RS

Varioram assembling

-injection

intake

distributor. system

engine

..24

240001 24

911 Fuel

Carrera system

Hose

911 Checking 911 Removing

RS -checking

Varioram

connection

Carrera

vacuum

-injection

schematic

components and and Varioram RS

system

for

leakage. M

64/20

-11

24 -19

installing installing Varioram

-injection of intake DME injections -engine

control distributor. system

M system

unit. 64/20

-engine

for

leaks.

64/21-24

.24

-21

.24-21a

24 7019 24 4619 24

Exhaust System

260155

Replacing exhaust system

Starter,

27 22 19

Adjusting Removing

Power

belt and

Supply,

tension installing

Troubleshooting Removing

and

installing the

for

alternator. starter new

V-belts. (manual

transmission)

cruise

startercontrol's

(Tiptronic) control

unit.

27 82 01 27 84 01

Troubleshooting Checking

and

27 88 05

-25

.24

-31

cruise

tie

control rod

for

actuator. cruise

control.

...27

-1

...27

-7

...27

-9

...27

-11

...27

-13

...27

-15

...27

-17

Table of contents in Germany

adjusting the

-23

.24

GRA

27 60 19

.24

.26-

27 30 49

Printed

-7

64/20

-16, 1996

911 Carrera (993)

Survey of contents The Service Information 911 Carrera.

Service Infonnatlon Technlk

of Service Information gives a detailed description

Technik '95 of the technical

features

Rep. Gr.

of the new

Page

Engine General Engine cross-sections Full-load curve Belt pulley Pistons Hydraulic valve lash adjuster Setting the timing USA -auxiliary air pump

1 -1

1 -4 1 -6

13 13 15

1 -10

1 -18

1 -8 1 -16 1 -19

Fuel and ignition systems General DME -Schematic Fuel -air flow Exhaust gas flow DME control unit 2.10.1 Mass air flow sensor Throttle potentiometer Ignition system Plausibility test Diagnosis Auxiliary air pump

2 -1

24 24 26 24

2- 5 2- 9 2-12 2-18

2 -24

2 -28 2 -29

2 -33

3- 1 3- 2 3 - 3

35 35 39

3 3 3 3

Power transmission Transmission Clutch Manual transmission Transmission ratios Gear set

Synchromesh Final drive Oil supply Porsche Tiptronic Modifications for the '95 mode! year

- 6 - 8 - 9 - 13

3 - 15 3 - 16 3 - 17

Rep. Gr.

Page

Running gear General Front axle Steering Rear axle Elasto-kinematic toe correction Coil springs (layout) Wheels, tires Suspension alignment

Brakes Bleeding the brakes ABS 5 Operation of the ABD Diagnosis ABS/ABD

40 48 42 42 42 44 44 47 47 45 45 45

4- 1 4- 2 4- 7 4- 8 4-12 4 -13

4-15 4-17 4 -20 4 -23 4 -24 4 -30 4 -34

Body General Constructional dimensions Aerodynamics and air ducting

5 -1

50 50

55-

4 8

Body equipment Color scheme as of 1995 model year Windows

60 64

Airbag system

6- 1 6- 8 6-14

Body equipment

Body -interior Body -interior

trim

Seats

7- 5

8 - 1 8 - 3 8 - 5

Heating, air conditioning, ventilation Particle filter Air ducting Heating -air conditioning unit Heating -air conditioning unit Series resistor of rear blower

80 85 87 80

8- 6 8- 9

911 Carrera (993)

Service Infonnatlon Technlk

Rep. Gr.

Page

90 90 64 91 91 91 92 94 94 94 97

99999-

Electrical system Instruments Alarm system/central locking system Heated rear window Central Information System (Z I) Radio "Alpine 7807" Sound package, DSP-System Windshield wiper and washer system Headlights Front end light cluster Taillights Engine compartment baseplate Wiring diagram

3 6 7 10

Summary Maintenance Number ranges Technical data

0 -1

0- 5

Overall Vehicle. General

911 Carrera (993)

?!I_,",,-,-

1624-03

Technical data (Adjusting values and wear limits are included in the respective repair groups) Note: U.S. values are given in brackets

Drive unit Internal engine designation

Manual transm.

Row M 64 / 05

USA 07

Tiptronic

Row M 64 / 06

USA 08

No. of cylinders

Bore

mm/in.

100 (3.94)

Stroke

mm/in.

76.4 (3.01)

Displacement (actual)

c.c./cu.in.

3600 (219.7) 11.3 : 1

Compression ratio Max. engine power to 80/1269 EEC

kW/HP

200 I 272

Net Power, SAE J 1349

kW(HP)

200 (270)

at engine speed

rpm

6100

Nmlkpm Nm(lbft) rpm

330 (243)

Max. torque

to 80/1269 EEC Net Torque, SAE J 1349 at engine speed

330/33.6

5000

Max. specific power output DIN 70020

kWIVHP/I

SAE J 1349

kW/I (HP/I)

Rpm limiter, fuel cutoff at

55.6 / 75.6 55,6 (75,0)

rpm

6700

Idle speed

rpm

800 :t 40

Fuel octane rating

RON/MaN

98/88

Manual transmission

kg (Ibs)

232 (511)

Tiptronic

kg (Ibs)

224 (494)

Engine weight (dry, ready for fitting)

911 Carrera (993)

Overall Vehicle -General

Engine design Type

6-cylinder four-stroke internal combustion engine with 2 horizontally opposed cylinder banks (flat engine)

Crankcase

Light-alloy, two-piece

Crankshaft

Forged, 8-bearing design

Main bearings

Friction bearings

Connecting rods

Forged

Big end bearings

Friction bearings

Pistons

Light alloy. pressed

Cylinders

Light alloy, individual cylinders

Cylinder head

Light alloy, individual cylinder heads with ceramic exhaust port liners

Valve guides

Press-fitted

Valve arrangement

1 inlet, 1 exhaust, suspended in V-design

Valve timing

One overhead camshaft each on right and left

Camshaft

Cast

Camshaft drive

Double chain

Valve clearance

Hydraulic lash adjustment

Timing for 1 mm valve lift

Inlet opens Inlet closes

1 degree BTDC 60 degrees ABDC

and zero clearance

Exhaust opens

45 degrees BBDC

Exhaust closes

6 degrees ATDC

Induction system

With controlled tuning flap

Overall Vehicle -General

911 Carrera (993)

Engine cooling Air-cooled system Via V-belts from the crankshaft

Fan drive Transmission

ratio: Crankshaft to fan

Air delivery rate

approx. 1 :1.60 1010 I /sec at 6,000 rpm of crankshaft

Engine lubrication Dry sump lubrication with separate oil tank

Oil cooling

Thermostatically controlled, front oil cooler in right-hand front fender, 2-stage electric fan

Oil filter

in return line

Oil pressure at n = 5,000 rpm

approx. 6.5 bar at 90. C oil temperature

Oil pressure indicator

0...5 bar, electric, and oil pressure warning lamp

Oil consumption

up to 1.5 1/1000 km

Exhaust system Twin-branch system, heat exchanger with joining of exhaust pipes outside of heat exchanger, twin-branch 3-way catalytic converter with Lambda control and central induction across mixing chamber, one muffler per exhaust line

Emission control Lambda control with 3-way catalytic converter (metal carrier) or internal engine control

Heating Engine-dependent hot air heating with additional electric fans and automatic temperature control

911 Carrera (993)

Overall

Vehicle

-General

Fuel system Type

DME (Digital Engine Electronics)

Fuel supply

1 electric roller cell pump

Clutch Single-plate dry clutch

Manual transmission

hydraulically operated double-mass flywheel Thrust plate

G MFZ 240

Drive plate

rigid, dia. 240

Electrical

system ECE-R 10 and 72/245/EEC

Interference suppression Battery voltage

Battery capacity

Alternator output

115/1610 A/C

Ignition

DME, dual ignition. knock control

Firing order

1-6-2-4-3-5

Ignition timing control

Via DME

Spark plugs

Bosch

FA 6 LOC

Bosch

FA 5 OTC

Beru

Spark plug gap

mm (in)

14 FA -5 OTU

0.7 + 0.1 (0.026 + 0.004)

Body construction Integral steel body, electrically extending rear spoiler, Coupe, optionally with sunroof, Cabriolet

Dimensions

(at DIN curb weight) Row

USA

Length

mm (in.

4245 (167.1)

4260 (167,7)

Width

mm (in.)

1735 (68.3)

Height

mm (in.)

1300 (51.2)

Sport chassis

1285 (50.6)

mm (in.)

2272 (89.4)

Front track

mm (in.)

1405 (55.3)

Rear track

mm (in.;

1444 (56.9)

Ground clearance

mm (in.)

110 (4.3)

(at gross vehicle weight)

Sport chassis

Wheelbase

(design)

Ramp angle (at gross vehicle weight)

1315 (51,8)

120 (4,7)

90 (3.5)

18 degrees Sport chassis

13.0 12.0

degrees Sport chassis

11.0 10.5

degrees Sport chassis

12.5 11.5

Front overhang angle (at gross vehicle weight)

Rear overhang angle (at gross vehicle weight)

13,1

Weights to DIN 70020 (manual transmission)

1370

70/156/EEC

1445

Gross vehicle weight

1710

Max. front axle load

720

Max. rear axle load

1065

Max. roof load including

kg/lbs

Total curb weight Curb weight to

roof rack

1690

75 (165) with original Porsche roof transport system

Technical

0-6 Printed

in Germany

-16,

data 1996

Overall Vehicle. General

911 Carrera (993)

Capacities Use only approved engine oils. Refer to

Engine

Technical Information Handbook Approx. 11.5 I (approx. 9 I for oil change)

Engine oil capacity

Determined by measurements with oil dipstick as per Owner's Manual Manual transmission with differential

3.6 I

Tiptronic with torque converter

approx. 9 I

Differential

0.91

Fuel tank

approx. 71 I (approx. 10 I reserve)

Brake fluid reservoir

approx. 0.34 I

Washer fluid for windshield and headlights

approx. 7.3

Power-assisted steering

approx. 1.0 I ATF (Dexron)

Performance (manual transmission) Top speed

km/h / mph

270 (168)

Acceleration from 0 to 100 km/h

5.6

Kilometer from standing start

25.1

Hill climbing Manual transmission In%

1 st gear

75%

2nd gear

51%

3rd gear

33%

4th gear

23%

5th gear

16%

6th gear

11%

JII 1

Overall

Vehicle

-General

911 Carrera (993)

Raising the vehicle The vehicle may only be raised at the jacking points illustrated. When driving the vehicle onto a lifting platform, make sure that there is sufficient clearance between the platform and the vehicle.

Front

Rear

--<

r", c--

1421-03

1422-03

Service every 20,000 km

Page

Diagnosis system: read out fault memory

Change engine oil Air cleaner: replace filter element

Panicle filter: replace filter element V-belt or Polyrib belt: check condition and tension

Replace span plugs (only on vehicles without ~talytic convener) Visual check for leaks: oils and fluids Crankcase ventilation: check tiqhtness of hose connections Fuel system: vi~~~spe~!!9n

for damage, routing and tight fit of line and hose connections

Intake air system: check hoses, lines and connections for ti~ht fit Parking brake: check free travel of parking brake lever Brake system: visual check of brake pads and brake discs for wear Brake hoses and pipes: visual check for damage. routing and corrosion Clutch: check free travel and pedal end position Throttle actutator: check for smooth oDeration and full-load Dosition Check operation of resonance flap Steering gear: visual check of rubber bellows for damage. Tie rod joints: check play and condition of dust caDS 14

Power steering: check fluid level Ball joints: visual inspection of dust caps for damage. Check bolt connections of front and rear suspension alignment for tight fit Transmission

/ final drives: check oil levels

Automatic transmission: check ATF fluid level Drive shafts: visual inspection of bellows for leaks and damaqe Exhaust system: visual inspection for leaks and damage, check fitting Tires: check condition and tire pressure

Door hin~es: lubricate with oil Check door and hinge locks and safety hook of fron! hood fo!Ji~~ss

and oceration

Seat belts: check operation and condition Seals of doors, hoods and roof: remove rubber abrasions. Apply suitable lubricant. Check operation of vehicle lighting. All headlights: check adjustment. Si~nal horn: check operation Windshield washer system, headlight cleaning system: Check fluid level and nozzle adjustment, check antifreeze content in winter season

All other electrical systems, monitor lamps and warning lamps: check operation

Iqnition circuits 1 and 2: check operation

Test drive: Brake pedal and parking brake, clutch, automatic speed control, steering, heater, air conditioning andi~struments: check operation Visual insEection for leaks: oils and fluids

Additional

service every 40,000 km

Page

Automatic transmission: change ATF and ATF filter

Toothed belt for p~~er steering: check conditi~n Replace

spark

plugs

(only for vehicles

with catalytic

Replace both engine oil filters Additional

converter)

-.!

service every 80,000 km

Replace fuel filter

Manual transmission I final drives: chanqe oil Automatic transmission: change oil in final drive Yearly service

-starting

after the first 2 years

File Status Report for Long-life warranty Service every 3 years Change brake fluid (use only genuine Porsche brake fluid)

Service every 4, 8, 10 years and then every 2 years Check airbag system Recommended

see page 68 -20

annual service

Visual inspection for leaks: oils, fluids Dia~nosis system: read out fault memory ~arking brake: check free travel of parking brake lever Brake system: visual check of brake pads and brake discs for wear Check brake fluid level Steering gear: visual inspection of bellows for damage Tie rod joints: check play and condition of dust caps Ball joints: visual inspection of dust caps for dama~e Drive shafts: visual insDection of bellows for leaks and damaqe Exhaust system: visual inspection for leaks and damage, check fittin,q, Tires: check condition and tire pressure Seals of doors, hoods and roof: remove rubber abrasions. Apply suitable lubricant. Check operation of vehicle liQhtinQ. Windshield washer system, headlight cleaning system: Check fluid level and nozzle adjustment, check antifreeze content in winter season. Battery: Check electrolyte level and electrolYte density All other electrical systems and monitor lamps and warninq lamps: check operationFile Status Report for Long-life warranty (first report after 2 years)

Test drive: Brake pedal and parking brake, clutch, automatic speed control, steering, heater, air conditio~~q and instruments: check operation Visual insoection for leaks: oils and fluids

03 20 00 Diagnosis Reading

Maintenance system:

out the fault memory

The procedure for reading out the fault memory is described in the operating instructions for System Tester 9288. A copy of the operating instructions is supplied with each tester. The System Tester 9288 is connected to the vehicle via a 19-pin socket. The socket is located in the passenger footwell next to the glove box. Also refer to Repair Group 03, Diagnosis, for operating instructions, repair group D, volume 8 diagnosis. Starting

with Model Year '95, the diagnostic

socket is located on the left-hand side of the center console and is fitted with a plugged-on cover

1967.03

Changing

engine oil (without filter)

2. Clean drain plugs. Always replace the seals. Tightening

Precondition: Engine at operating ture (70...900 C oil temperature)

tempera-

torque

of drain plugs is

50 Nm (37 ftlb.): at the thermostat

housing

50 + 5 Nm (37 + 3.7)

1. Remove engine guard and right-hand side

at the crankcase

member panel. Undo the drain plugs in the

50 + 5 Nm (37 + 3.7)

crankcase and thermostat housing and 3. Fill with approx. 6 liters of engine oil. Run

drain engine oil.

engine at idle and top up with approx. 3 liters. The oil change capacity is approx.

Crankcase drain plug

9 liters. Use only approved engine oils. Refer to Technical Information Handbook.

---~

Check oil level at operating temperature and at idle speed (refer to Owner's Manual). Check engine, oil reservoir, lines and front oil

cooler for leaks (visual inspection)!

~ ;.-

~., '"

J 605-03

Thermostat housing drain plug

~ /'

9 (;;;;;;;;;J

1454.03

Air cleaner: Replacing

the air cleaner element

1. Unhook clamps and lift off housing cover.

1417-03

2. Take out filter element and clean filter housing with a lint-free cloth. 3. Fit new filter element. Check hose connections of entire intake system for tight fit!

~ -"""

Particle filter: Replacing

filter element

Installation 1. Place particle filter into housing duct.

Note

Assembly mark faces up. The panicle filters are fitted on the left and right-hand sides in front of the heater/air

2. Fit housing cover into housing duct from above and align with assembly mark of

conditioning housing.

particle filter (refer to Fig.). Removal 1. Remove cover for heating and air conditioning system. Screw out knurled nut and dis-

Fig. shows rear of particle filter and housing

cover

engage retaining clamps from housing cover using a screwdriver.

Lift off housing

cover.

"'~ '"\

-:...;;.~-:;.:~~,:

~~:::;:;:~ -

1470-03

3. The assembly mark of the particle filter is visible from outside in the housing cover.

1469.03

2. Take particle filter out of housing duct from

above.

911 Carrera (993)

Maintenance

Checking and/or adjusting pressor drive belts

alternator,

Caution:

key is pulled off whenever

Make sure the ignition

Checking

used drive belts

(alternator

and fan wheel)

fan wheel and air conditioning measurements

com-

are made.

Fitting a new belt (alternator and fan wheel)

Use belt tension measuring instrument (Spe-

When fitting a new belt, be sure to observe

cial Tool 9574) to check tension.

the correct assembly

sequence

in order to

avoid any loss of belt tension during vehicle A description of how to use the Special Tool

operation.

is contained in Repair Group 13, page 13 -30. 1. Fit new belt. Adjust tension by inserting or Retensioning

the belt is only required

the belt tension ing instrument

displayed

at the measur-

is less than 15 scale incre-

removing shims as required. Shims are available for belt tensioning in

ments when the engine is cold and less

thicknesses of 0.5 mm and 0.7 mm. The 0.7 mm shim is identified by a 2 mm dia.

than 20 scale increments

drill hole.

when the engine

is hot. 2. Before measuring the belt tension, start Retensioning

the belts

engine once more and run engine at idle

Retension belts as described in the General

briefly.

Adjustment Notes section. Before measuring the belt tension, start

Tension:

engine and let engine idle briefly.

Cold engine: 23 to 35 scale increments 3. Run engine at idle for approx. 15 minutes

Tension:

or test drive vehicle for approx. 10 miles.

Cold engine: Engine at operating

15 to 23 scale increments

Check tension again. Specification: 28 to 40 scale increments

temperature:

20 to 28 scale increments

Retension if required. Test requirement: Engine at operating temperature Adjustment specifications pressor drive belt

for A/C com-

Specification: 30 to 35 scale increments Retension if required.

General adjustment

notes

4. Use only V-belts that have been approved by the manufacturer.

Fan wheel and alternator have separate drives.

Note Rotate engine only at lower belt pulley or by operating the starter. After completing all operations, check to make sure that hexagon head nut has been tightened sufficiently on alternator shaft.

1863-27

1 = Alternator drive components 2 = Fan wheel drive components Adjusting the V-belts 1. Use polygon wrench (999 571 052 02) to lock shaft and undo hexagon head nut. Remove shims and pulley half. 2. If belt tension is below specification, remove one shim from between pulley halves and refit in front of front pulley half. Tighten hexagon head nut to 50 :t 5 Nm. 3. Three additional M 6 screws have to be undone for V-belt and fan wheel.

--~ ----

Maintenance

911 Carrera (993)

Replacing (Remove

5. If spark plugs are difficult to remove, use

spark plugs

Special Tool (disassembly clamp) 9513, Part No. 000.721.951.30.

both rear mufflers)

1. Remove engine guard. Remove ball clamps from tailpipe and rear muffler / catalytic con-

verter and take out hexagon head bolts. Remove both tailpipes.

\\\

III

~~498-03

6. Unscrew spark plugs with commercially available Snap-on socket, Part No. S 9706, and Snap-on extension, Part No. FXW 4. 1441-03

1. Undo rear muffler at tightening strap and lift off rear muffler. Remove rear muffler brack-

et. 3. Undo hot-air hose from right-hand heat exchanger (cyls. no. 4 to 6) and from air distributor pipe and take off hose. 4. Undo both left and right-hand engine covers from camshaft housing, hydraulic pump support bracket as well as front and rear engine cover. Leave engine cover suspended at ignition cables.

Note Do not use any lubricant on the plug threads.

Maintenance

Visual inspection

for leaks:

Oils, fluids This check can be carried out after the engine guard has been removed.

Crankcase ventilation: Check hose connections for tight fit.

Fuel system: Visual inspection for damage, correct routing and tight fit of line connections.

Intake air system: Check that hoses, pipes and connections are securely fitted.

911 Carrera (993)

Parking brake:

Check free travel of the parking

brake lever

The parking brake is fitted with asbestos-free brake linings. The parking brake must never be adjusted in such a way that the lining has to "grind itself free" in operation. If the brakes do not show any effect when the parking brake lever is pulled up by more than 4 notches using medium force, the parking 576-46

brake must be readjusted.

4. Insert a screwdriver across the hole in the

Adjusting the parking brake:

brake disc to reset the adjuster until the wheel is locked. Then undo the adjuster

1. Remove rear wheels.

again until the wheel can be rotated freely. Now undo by a further two notches.

2. Release parking brake lever and push back disc brake pads until the brake disc rotates freely.

3. Undo the adjusting nuts on the turnbuckle (arrow) until the cables are slack. Note Remove the cassette box behind the parking brake lever to gain access to the turnbuckle. The fastening screw is located below the rubber insert.

5. Pull up parking brake lever by two notches and turn adjusting nut on the turnbuckle until both wheels can just barely be rotated

by hand. 6. Release parking brake lever check if both wheels rotate freely.

Brake system: Visual inspection discs for wear

of brake pads and brake

Note The brake pads must be replaced on both sides of one single axle as soon as the brake pad wear warning lamp lights up or, at the latest, when the pads have worn down to a thickness of 2 mm. If pad wear is indicated by the wear warning lamp, the warning contact (sensor complete with wire and connector) must be replaced. Replacement of the warning contact(s) can be avoided by replacing the brake pads at the latest when they are worn to a thickness of 2.5 mm. Warning contacts must be replaced if the wire core is exposed. Replacement is not necessary, however, if rubbing wear is limited to the plastic part of the warning contact only.

1. Remove rear wheels to check rear brake pads. The front brake pads are visible with the wheels fitted.

2. Check brake pads visually for wear. The wear limit is reached as soon as the remaining pad thickness is down to 2 mm.

578-46

'CD

Maintenance

911 Carrera (993)

Brake hoses and pipes: Visual inspection

for damage and routing

Miscibility

of brake fluids:

The brake fluid DOT 4 Type 200 used until now is miscible with Super DOT 4. This

(corrosion)

means that Super DOT 4 can be used to top

Checking

the brake fluid level

up the brake fluid-level in vehicles with brake systems containing the old type of brake fluid

Top up brake fluid if required (refer to marks

until the next time a brake fluid change is due.

on reservoir). Never top up beyond the MAX mark as this

Both brake fluids are coloured amber.

may cause brake fluid to escape past the bleed hole.

Important

information

about the brake fluid

Use only new brake fluid DOT 4. Observe brake fluid quality. The brake fluid DOT 4 Type 200 (change in-

!!!N-

terval 3 years) used until now is no longer available "Super

via the Porsche Parts Service. DOT 4" brake fluid will be delivered in-

stead. A 2-year change interval applies to this brake fluid. Vehicles with brake systems containing the old type of brake fluid must be filled with Super DOT 4 the next time a brake fluid change is due. This brake fluid is available under the following part number: Container size 1 litre = 000.043.203.66 Container size 30 litres = 000.043.203.67.

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