TROUBLE SHOOTING院
possible problems
analysis of reasons
solutions
Operational valve
is in the lifting po鄄
sition, but the car鄄
riage is not.
1.power take-off doesn't joggle
2.insufficient oil amount in the oil tank
3.malfunction of the control system
荫
lack of voltage or obstructed circuit
荫
lack of air pressure or air leakage
荫
electromagnetic valve malfunction
4.oil leakage of the hydraulic system
5.too much inner leakage of gear pump
6.directional control valve isn't shut
7.the plug doesn't recover the original position
when in the limited valve
8.too much leakage in the oil tank
9.the operational valve doesn't work
1.solve the gear engagement problems, repair or
change the power take-off.
2.put the oil in the tank according to the rules
3.solve the control system problems
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fully charge or connect the circuit
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inflate the system or repair the leakage parts.
荫
repair or change the electromagnetic valve
4.repair the oil leakage parts
5.change the gear pump
6.cheek if the plug is blocked up and adjust it
7.check and adjust the post guide and plug
8.change the gasket set or oil tank
9.repair or change the operational control valve
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OWNER爷S MANUAL
JAC HEAVY DUTY TRUCK
possible problems
analysis of reasons
solutions
The carriage is not
lifted to the proper
position or doesn't
stop after being lift鄄
ed
1.shortage of hydraulic oil amount
2.the directional control valve isn't fully shut
3.one-way valve leakage
4.valve moves up and down when in limited
valve
5.inner leakage of the gear pump
1.fill up with the hydraulic oil
2.check, maintain and change for new ones.
3.check and change for new ones.
4.refit the limited valve.
5.change the gear pump.
The carriage moves
up and down when
lifted or is lifted too
slowly
1.air in the hydraulic system
2.the directional control valve isn't fully shut
3.some inner leakage of the gear pump
4.small holes on the oil tank filter are blocked up
5.one-way valve is blocked up
6.shortage of hydraulic oil
1.re-lift to let out the air
2.adjust the directional control valve
3.change the gear pump
4.check and change the oil filter and the hy鄄
draulic oil
5.repair and change the one-way valve
6.fill up with the hydraulic oil
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