LS tractor MT458, Operator'S Manual

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