System
Faults
Possible causes
Solutions
Brake
Brake does not work or
only one side works.
▲
Wrong brake pedal play.
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Lining worn or broken
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Left/right pedal play is different
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Adjust
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Replace
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Adjust
After brake pedal
working, it does not
return.
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Return spring damaged
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Lack of grease in shaft parts
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Replace the spring
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Remove the rust, apply grease
The linkage does not
▲
Lack of transmission oil
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Air in the suction pipe
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Hydraulic filter clogged
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Aid oil
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Tighten the filter or replace
seal of connecting part
▲
Clean the filter or replace
Hydraulic
lift
system
The linkage does not
move up.
▲
Hydraulic filter clogged
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Hydraulic pump failure
▲
Control valve failure
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Cylinder or cylinder related
parts broken
▲
Clean the filter or replace
▲
Repair or replace
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Repair or replace
▲
Repair or replace
Oil leakage
▲
Connecting part loosened
▲
Oil seal damaged
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Pipe cracked
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Tighten
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Replace
▲
Replace
If lever is placed on the
raising position, relief
valve sounds off.
▲
Upper limit of position control
lever is changed
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Adjust the upper limit
The linkage does not
move down.
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Down speed control valve
locked
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Control valve failure
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Cylinder damaged
▲
Turn the knob counter-
clockwise
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Repair or replace
▲
Replace
5
5
5
5
- 35
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Cylinder damaged
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Lift shaft moving part damaged
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Replace
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Repair or replace