Kubota L4400, Workshop Manual

Page: 289 / 385

7-S1
L4400 , WSM STEERING
1. TROUBLESHOOTING
W1014322
Symptom Probable Cause Solution
Reference
Page
Tractor Can Not Be
Steered Steering controller broken Replace 7-S10, S11
Pipe broken Replace –
Front Wheels
Vibration Improper toe-in adjustment Adjust 6-S6
Air in the hydraulic system Bleed 7-S10
Improperly mounted wheels Change Wheels –
Tie-rod end loose or worn Retighten or replace 6-S13
Front wheel hub bearing worn Replace 6-S11
Clearance between front axle center pivots and
bracket bushing excessive Replace 6-S18, S23
Steering controller malfunctioning Replace 7-S10, S11
Hard Steering Hydraulic pump malfunctioning Replace 7-S8, S9
Overload – –
Transmission fluid improper or insufficient Change or replenish G-8
Oil leak from pipe joint Retighten –
Insufficient tire pressure Inflate G-49
Steering controller malfunctioning Replace 7-S10, S11
Relief valve malfunctioning Replace 7-S10, S11
Steering Force
Fluctuates Air sucked in pump due to leaking or missing of
oil Replenish –
Air sucked in pump from suction circuit Repair –
Excessive Steering
Wheel Free Play Steering controller malfunctioning Replace 7-S10, S11
Front Wheels
Wander to Right or
Left Air sucked in pump due to leak of oil Replenish –
Air sucked in pump from suction circuit Repair –
Tire pressure uneven Inflate G-49
Insufficient bleeding Bleed 7-S10
Improper toe-in adjustment Adjust 6-S6
Clearance between front axle center pivots and
brackets bushings excessive Replace 6-S18, S23
Tie-rod end loose or worn Retighten or replace 6-S13
Steering controller malfunctioning Replace 7-S10, S11
Noise Air sucked in pump due to lack of oil Replenish –
Air sucked in pump from suction circuit Repair –
Pipe deformed Replace –
Wheel are Turned to
a Direction Opposite
to Steering Direction Power steering hoses are connected in reverse Reconnect steering
hoses –
KiSC issued 07, 2007 A
Tractor Manuals Scotland - Please Do Not Copy
Tractor Manuals Scotland