Kubota M9540, Workshop Manual

Page: 406 / 619

7-S1
M8540, M9540, WSM STEERING
1. TROUBLESHOOTING
W1014322
Symptom Probable Cause Solution
Reference
Page
Tractor Cannot Be
Steered Drive shaft in the power steering controller
improper assembled Reassemble 7-S7, 9
Pipe broken Replace –
Hard Steering Oil improper Change with
specified oil G-9
Hydraulic pump malfunctioning Replace 8-S20
Relief valve malfunctioning Replace 7-S4
Controller (spool and sleeve) malfunctioning Repair or replace 7-S7, 9
Oil leak due to seal damaged Replace –
Steering Force
Fluctuates Controller malfunctioning Replace 7-S7, 9
Air sucked in pump due to leaking or missing of
oil Replenish G-9, 20
Air sucked in pump from suction circuit Repair –
Heavy Steering
Especially in the
Beginning of
Steering Controller malfunctioning Repair or replace 7-S7, 9
Steering Wheel Turns
Spontaneously When
Released Controller malfunctioning Repair or replace 7-S7, 9
Front Wheels
Wander to Right and
Left Controller malfunctioning Repair or replace 7-S7, 9
Air sucked in pump due to lack of oil Replenish G-9, 20
Air sucked in pump from suction circuit Repair –
Insufficient bleeding Bleed –
Cylinder malfunctioning Repair or replace 7-S10
Wheels Are Turned
to a Direction
Opposite to Steering
Direction Cylinder piping connected in reverse Repair –
Steering Wheel Turns
Idle in Manual
Steering Insufficient bleeding Bleed –
Air sucked in pump due to lack of oil Replenish G-9, 20
Noise Air sucked in pump due to lack of oil Replenish G-9, 20
Air sucked in pump from suction circuit Repair –
Pipe deformed Replace –
Oil Temperature
Increases Rapidly Relief valve malfunctioning Replace 7-S4
Front Wheels Vibrate Mechanical connections or wheel bearings worn Replace defective
parts –
KiSC issued 09, 2008 A