5 - 36
System
Faults
Possible causes
Solutions
Brake
Brake does not work or
only one side works.
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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
Hydraulic
lift
system
The linkage does not
move up.
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Lack of transmission oil
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Air in the suction pipe
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Hydraulic filter clogged
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Hydraulic pump failure
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Control valve failure
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Cylinder or cylinder related
parts broken
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Aid oil
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Tighten the filter or replace
seal of connecting part
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Clean the filter or replace
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Repair or replace
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Repair or replace
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Repair or replace
Oil leakage
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Connecting part loosened
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Oil seal damaged
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Pipe cracked
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Tighten
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Replace
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Replace
If lever is placed on the
raising position, relief
valve sounds off.
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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
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Lift shaft moving part damaged
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Turn the knob counter-
clockwise
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Repair or replace
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Replace
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Repair or replace