HYDRAULIC SYSTEM
M6060, M7060, WSM
7-S1
1. TROUBLESHOOTING
9Y1210828HYS0001US0
Symptom Probable Cause Solution
Reference
Page
Implement Does Not
Raise (Not Noise)
Control linkage improperly assembled or
damaged
Repair or replace 7-S21
Control valve malfunctioning (unload valve,
spool, check valve, poppet valve)
Repair or replace 7-S25
Control valve broken Replace 7-S25
Control valve improperly adjusted Adjust 7-S25
Relief valve spring damaged Replace 7-S28
Cylinder damaged Replace 7-S26
Safety valve damaged Replace 7-S28
Implement Does Not
Raise (Noise)
Transmission fluid improper or insufficient Change or fill G-13
Oil filter clogged Replace G-34
Relief valve setting pressure too low Adjust 7-S28
Relief valve spring weak or damaged Replace 7-S28
Hydraulic pump malfunctioning Repair or replace 7-S18
Implement Does Not
Reach Maximum
Height
Position rod and feedback rod improperly
adjusted
Adjust 7-S9
Draft rod and feedback rod improperly adjusted Adjust 7-S11,
7-S12
Implement Does Not
Lower
Control valve malfunctioning Repair or replace 7-S25
Spool damaged Replace 7-S25
Lowering speed adjusting valve closed Open 7-S30
Implement Drops by
Weight
Hydraulic cylinder worn or damaged Replace 7-S26
Safety valve damaged Replace 7-S28
Lowering speed adjusting valve damaged Replace 7-S30
Control valve malfunctioning (check valve seat
surface, check valve O-ring, poppet valve seat
surface and poppet valve O-ring damaged)
Replace 7-S25
Implement Hunts
(Moves Up and
Down)
Poppet valve, poppet seat surface damaged Replace 7-S26
Check valve, check valve seat surface damaged Replace 7-S26
Control valve O-ring worn or damaged Replace 7-S25
Draft Control
Malfunctioning
Draft control linkage improperly adjusted Adjust 7-S12
Torsion bar weak or broken Replace 7-S29
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