Troubleshooting - wsm M6040 Workshop Manual

M6040, M7040, WSM

1. TROUBLESHOOTING

Symptom
Tractor Cannot Be
Steered
Hard Steering
Steering Force
Fluctuates
Heavy Steering
Especially in the
Beginning of Steering
Steering Wheel Turns
Spontaneously When
Released
Front Wheels Wander
to Right and Left
Wheels Are Turned to
a Direction Opposite
to Steering Direction
Steering Wheel Turns
Idle in Manual
Steering
Noise
Oil Temperature
Increases Rapidly
Front Wheels Vibrate
Probable Cause
Drive shaft in the power steering controller
improper assembled
Pipe broken
Oil improper
Hydraulic pump malfunctioning
Relief valve malfunctioning
Controller (spool and sleeve) malfunctioning
Oil leak due to seal damaged
Controller malfunctioning
Air sucked in pump due to leaking or missing of
oil
Air sucked in pump from suction circuit
Controller malfunctioning
Controller malfunctioning
Controller malfunctioning
Air sucked in pump due to lack of oil
Air sucked in pump from suction circuit
Insufficient bleeding
Cylinder malfunctioning
Cylinder piping connected in reverse
Insufficient bleeding
Air sucked in pump due to lack of oil
Air sucked in pump due to lack of oil
Air sucked in pump from suction circuit
Pipe deformed
Relief valve malfunctioning
Mechanical connections or wheel bearings worn
Reassemble
Replace
Change with
specified oil
Replace
Replace
Repair or replace
Replace
Replace
Replenish
Repair
Repair or replace
Repair or replace
Repair or replace
Replenish
Repair
Bleed
Repair or replace
Repair
Bleed
Replenish
Replenish
Repair
Replace
Replace
Replace defective
parts
7-S1
STEERING
Reference
Solution
Page
–
7-S10
G-10
8-S18
7-S4
7-S10
–
7-S5,
7-S10
G-10
–
7-S5,
7-S10
7-S5,
7-S10
7-S5,
7-S10
G-10
–
–
7-S8,
7-S12
–
–
G-10
G-10
–
–
7-S4
–
9Y1210143STS0001US0
KiSC issued 07, 2012 A