Kubota WSM L5040-II User Manual

HYDRAULIC SYSTEM
L3540-II, L4240-II, L5040-II, L5240-II, L5740-II , WSM
8-S1
1. TROUBLESHOOTING
9Y1211167HYS0001US0
Symptom Probable Cause Solution
Reference
Page
Implement Does Not
Rise (Not Noise)
1. Control linkage improperly adjusted Adjust 8-S19
2. Control linkage improperly assembled or
damaged
Repair or replace –
3. Relief valve spring weaken or broken Replace 8-S11
4. Hydraulic piston O-ring, cylinder damaged Replace 8-S21
5. Position control valve malfunctioning Repair or replace 8-S19
(Noise) 1. Transmission fluid improper or insufficient Change or fill G-37
2. Oil filter clogged Replace G-37
3. Suction pipe loosen or broken Repair or replace –
4. Relief valve setting pressure too low Adjust 8-S11
5. Relief valve spring weaken or damaged Replace 8-S11
6. Hydraulic pump malfunctioning Repair pr replace 8-S16
Implement Does Not
Reach Maximum
Height
1. Top link length improperly adjusted Adjust –
2. 3 point link improperly set Adjust –
3. Position control feedback rod improperly
adjusted
Adjust 8-S13
4. Hydraulic arm shaft, lift arm improperly
assembled
Adjust 8-S22
Implement Does Not
Lower
1. Position control valve malfunctioning
• Spool damaged Replace 8-S19
• Poppet 2, push rod improperly adjusted Adjust 8-S19
Implement Drops by
Weight
1. Safety valve damaged Replace 8-S26
2. Hydraulic piston and O-ring worn or damaged Replace 8-S21
3. Hydraulic cylinder worn or damaged Replace 8-S21
4. Lowering speed adjusting valve damaged Replace 8-S18
5. Position control valve malfunctioning
• Poppet 2 seat surface damaged Replace 8-S19
• Poppet 2 seat sleeve O-ring damaged Replace 8-S19
Implement Hunts
(Moves Up and
Down)
1. Poppet 2, push rod improperly adjusted Adjust 8-S19
2. Position control valve malfunctioning
• Poppet 2 seat surface damaged Replace 8-S19
• Poppet 2 seat sleeve O-ring damaged Replace 8-S19
Oil Temperature
Increases Rapidly
1. Relief valve operating
• Relief valve malfunctioning Adjust or replace 8-S11
• Hydraulic line is clogged Clean or replace –
2. Oil leaks from valves Repair or replace –
3. Hydraulic pump leak or damaged Repair or replace 8-S15
KiSC issued 02, 2015 A

Kubota WSM L5040-II Specifications

General

Brand	Kubota
Model	WSM L5040-II
Category	Tractor
Language	English