FIGURE IT OUT
New Problem
System Overheats on Custom Drum Crusher
Solution to March 2021 problem: Pusher Cylinders Stop Midway
By Robert Sheaf, CFPAI/AJPP, CFPE, CFPS, CFPECS, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPMM CFC Industrial Training
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A HORIZONTAL PRESS crushes empty 30- and 55-gallon drums, and a drip pan captures any liquid that is flushed out. As it crushes the drums, the machine punctures a hole inserting a spray nozzle in one end and several holes in the lower area of the opposite end for a drain. The company assumes the captured waste is hazardous, and they send it to another EPA-approved company. The drum material goes to a mill that melts it down and works it into various shapes, like angles and bar stock. Part number Part description The company had a problem with the hydraulic unit overheating and determined it was SWINGFLGLCK2062 Swing hose FlangeLock kit due to corrosion build up in the copper tubes in the four-pass water-cooled heat exchanger used to remove excess heat. They routed out and cleaned the tubes and reassembled thecap kit SWINGCAP2062 Swing circuit unit with new end-cap gaskets and zinc anodes. They were surprised that the system still TRAVELFLGLCK2462 Travel hose FlangeLock kit experienced overheating problems. They were able to increase the water flow, but that did not help. TRAVELCAP2462 Travel circuit cap kit Their outside hydraulic service company assured them that the system was operating as Front attachment FRONTATTFLGLCK326162 FlangeLock kit designed and that it must be a heat exchanger problem. The service company wanted to FRONTATTCAP326162 Front attachment cap kit sell them a larger heat exchanger, Boom arch hose but the customer balked at the Robert Sheaf has more than 45 years BOOMARCHFLGLCK3262 FlangeLock kit cost because the existing one did troubleshooting, training, and consulting in the fluid BOOMARCHCAP3262 Boom arch hose cap kit well for many years. power field. Email rjsheaf@cfc-solar.com or visit his What could be the problem? website at www.cfcindustrialtraining.com.
The shredder that had problems with stopping midstroke was running when I arrived. I told them to make sure the TM “unloader” valve on the manifold with the pusher cylinders was energized and, if it wasn’t, the computer was probably responding to a pressure transducer spike Applicable machines Number of parts Weight (kg) and de-energized the unloader valve.
HITACHI FLANGELOCK AND CAP KITS AVAILABLE TM
TM
TM
TM
EX3600, EX5600, EX8000
16 x 2062U - red FlangeLockTM
6.7
Following up on the problem, 16 x 2062 - capthey 4.5 confirmed that the computer told the EX3600, EX5600, EX8000 16 x 2462U - purple FlangeLock 7.7 unloader valve to de-energize. Adding a time delay to EX3600, EX5600, EX8000in the computer 16 x 2462 -program cap 6.4 ignore momentary pressure spikes from a 14 x 3262U - black FlangeLock EX3600, EX5600, EX8000 8.9 4 x 3261U - black & silver FlangeLock pressure transducer solved the problem. EX3600, EX5600, EX8000
TM
TM
TM
EX3600, EX5600, EX8000
14 x 3262 - cap 4 x 3261 - cap
9.5
To view previous problems, visit 20 x 3262U - black FlangeLock 9.9 www.fluidpowerjournal.com/figure-it-out. TM
EX3600, EX5600, EX8000 EX3600, EX5600, EX8000
20 x 3262 - cap
11.3
Routine and scheduled maintenance of hydraulic systems are vital to getting the most out of your Hitachi Mining Excavator. While maintenance plays the largest role in the prevention of unnecessary machine downtime, it can also expose the hydraulic system to high levels of contamination rapidly decreasing component longevity. The importance of contamination control is sometimes overlooked when performing maintenance due to incorrect practices being used.
CO U T CO NTA LTIM HE NT M A RO INA TE L T TI OO ON L
Stop the Mess
The FlangeLock™ tool and caps are the ultimate contamination control tools for protecting your hydraulic system. The FlangeLock™ allows for the simple sealing of open hydraulic flanges without tools while the caps can be bolted in place of a flange connection. Easy on, easy off, they offer a leak-proof solution to hydraulic systems and environmental cleanliness. FlangeLock™ tools and caps stop the mess.
The FlangeLock™ Tool is the ultimate contamination control tool for protecting HITACHI MAKING systems. CONTAMINATION CONTROL EASY sealing of open SAE code 61, 62 your hydraulic It allows for the simple Hitachi have packaged FlangeLock™ tool and caps specifically for Hitachi mining excavators. The Hitachi customised & make CAT-Style hydraulic without Constructed from lightweight aluminum. kits sure no matter whichflanges component routine tools. maintenance is being performed on, you will always have the exact Easyofon, easy off.™*Offers to hydraulic system and environmental number FlangeLocks and capsatoleakproof help reducesolution contamination. cleanliness. FlangeLock™ Tools stop the mess! ™
TIME MONEY LABOR OIL
• No tools required • One hand installation Call you local Hitachi Muswellbrook representative or • No expensive hardware needed • Eliminate hydraulic oil spills & clean up onhoses 02 6541 6300 for installation more information. • No more the rags branch stuffed into • Quick & ease of usage • No more messy plastic caps • Safe for personnel & environment • The ultimate contamination control tool • Industry acclaimed
This product is Patented, other Patents pending.
For more information, call 203-861-9400 or email sales@flangelock.com. www.flangelock.com MAY 2021
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THE FLANGELOCK™ TOOL AND CIRCUIT BLANKING CAPS
*Note: FlangeLocks are not to be used under pressure
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CONTAMINATION CONTROL
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WWW.FLUIDPOWERJOURNAL.COM • WWW.IFPS.ORG
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