Troubleshooting - Kubota WSM STV32 Workshop Manual

STV32 · STV36 · STV40, WSM

1. TROUBLESHOOTING

Symptom
Tractor Cannot Be
Steered
Front Wheels Vibrate
Hard Steering
Steering Force
Fluctuates
Front Wheels Wander
to Right and Left
Wheels Are Turned to
a Direction Opposite
to Steering Direction
Noise
Probable Cause
A Steering controller broken
A Hose broken
A Centering spring weaken or broken
A Improper toe-in adjustment
A Air in the hydraulic system
A Improperly mounted wheels
A Tie-rod end loose or worn
A Clearance between front axle case boss and
brackets bushings excessive
A Hydraulic pump malfunctioning
A Overload
A Transmission fluid improper or insufficient
A Oil leak from pipe joint
A Insufficient tire pressure
A Steering controller malfunctioning
A Relief valve malfunctioning
A Air sucked in pump due to leaking or missing
of oil
A Air sucked in pump from suction circuit
A Centering spring weaken or broken
A Air sucked in pump due to leak of oil
A Air sucked in pump from suction circuit
A Tire pressure uneven
A Insufficient bleeding
A Improper toe-in adjustment
A Clearance between front axle case boss and
brackets bushings excessive
A Tie-rod end loose or worn
A Delivery hose RH and LH connected in reverse Repair
A Air sucked in pump due to lack of oil
A Air sucked in pump from suction circuit
A Delivery hose deformed
Replace
Replace
Replace steering
controller
Adjust
Bleed
Correct
Retighten or replace
Replace
Replace
Loosen the load
Change
Retighten
Inflate
Replace
Replace steering
controller
Replenish
Repair
Replace steering
controller
Replenish
Repair
Inflate
Bleed
Adjust
Replace
Retighten or replace
Replenish
Repair
Replace
7-S1
STEERING
Reference
Solution
Page
7-S5
7-S5
6-S4
7-S4
G-48
6-S7
6-S14
8-S16
G-8, 15
7-S5
G-47
7-S5
7-S5
G-8, 15
G-8, 15
G-47
7-S4
6-S4
6-S14
6-S7
G-8, 15
0000007792E
KiSC issued 04, 2006 A