7-S1
L3130 · L3430 · L3830 · L4630 · L5030, WSM
STEERING
1. TROUBLESHOOTING
W10143220
Symptom Probable Cause Solution
Reference
Page
Tractor Can Not Be
Steered
• Steering controller broken
• Steering linkage broken
• Pipe broken
Replace
Replace
Replace
7-S12
7-S15
–
Front Wheels Vibrate • Improper toe-in adjustment
• Air in the hydraulic system
• Improperly mounted wheels
• Tie-rod end loose or worn
• Clearance between front axle center pivots
and bracket bushing excessive
• Steering controller malfunctioning
Adjust
Bleed
Retighten
Retighten or replace
Replace
Replace
6-S5
7-S12
7-S13
7-S13
6-S19
7-S12
Hard Steering • Steering linkage bushings sticking
• Hydraulic pump malfunctioning
•Overload
• Transmission fluid improper or insufficient
• Oil leak from pipe joint
• Insufficient tire pressure
• Steering controller malfunctioning
• Relief valve malfunctioning
Replace
Replace
–
Change or replenish
Retighten
Inflate
Replace
Replace
–
7-S8, S9
–
G-7, 8
–
G-55
7-S12
7-S12
Steering Force
Fluctuates
• Air sucked in pump due to leaking or missing
of oil
• Air sucked in pump from suction circuit
Replenish
Repair
–
–
Excessive Steering
Wheel Play
• Steering linkage worn Replace 7-S15
Front Wheels
Wander to Right or
Left
• Air sucked in pump due to leak of oil
• Air sucked in pump from suction circuit
• Tire pressure uneven
• Insufficient bleeding
• Improper toe-in adjustment
• Clearance between front axle center pivots
and brackets bushings excessive
• Tie-rod end loose or worn
• Steering linkage worn
• Steering controller malfunctioning
Replenish
Repair
Inflate
Bleed
Adjust
Replace
Retighten or replace
Replace
Replace
–
–
G-55
7-S12
6-S5
6-S19
7-S13
7-S15
7-S12
Wheels Are Turned
to a Direction
Opposite to Steering
Direction
• Power steering hoses connected in reverse Repair 7-S12
Noise • Air sucked in pump due to lack of oil
• Air sucked in pump from suction circuit
• Pipe deformed
Replenish
Repair
Replace
–
–
–
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