1. TROUBLESHOOTING; Probable Cause; Reference - Page 554

HYDRAULIC SYSTEM

L3560, L4060, L4760, L5060, L5460, L6060, WSM

8-S1

1. TROUBLESHOOTING

9Y1210824HYS0001US0

Symptom

Probable Cause

Solution

Reference 

Page

Implement Does Not 
Rise (Not Noise)

Control linkage improperly adjusted

Adjust

8-S13

Control linkage improperly assembled or 

damaged

Repair or replace

–

Position control valve malfunctioning

Repair or replace

8-S19

Relief valve spring weaken or broken

Replace

8-S27

Hydraulic piston O-ring, cylinder damaged

Replace

8-S22

(Noise)

Transmission fluid improper or insufficient

Change or fill

G-9

Oil filter clogged

Replace

G-31

Suction pipe loosen or broken

Repair or replace

–

Relief valve setting pressure too low

Adjust

8-S11

Relief valve spring weaken or damaged

Replace

8-S27

Hydraulic pump malfunctioning

Repair pr replace

8-S14

Implement Does Not 
Reach Maximum 
Height

Position control feedback rod improperly 

adjusted

Adjust

8-S13

Top link length improperly adjusted

Adjust

–

Hydraulic arm shaft, lift arm improperly 

assembled

Adjust

8-S23

3 point link improperly set

Adjust

–

Implement Does Not 
Lower

Position control valve malfunctioning

• Spool damaged

Replace

8-S20

• Poppet 2, push rod improperly adjusted

Adjust

8-S20

Implement Drops by 
Weight

Hydraulic cylinder worn or damaged

Replace

8-S21

Safety valve damaged

Replace

8-S28

Hydraulic piston and O-ring worn or damaged

Replace

8-S22

Lowering speed adjusting valve damaged

Replace

8-S19

Position control valve malfunctioning

• Poppet 2 seat surface damaged

Replace

8-S20

• Poppet 2 seat sleeve O-ring damaged

Replace

8-S20

Implement Hunts 
(Moves Up and 
Down)

Position control valve malfunctioning

• Poppet 2 seat surface damaged

Replace

8-S20

• Poppet 2 seat sleeve O-ring damaged

Replace

8-S20

Poppet 2, push rod improperly adjusted

Adjust

8-S20

Oil Temperature 
Increases Rapidly

Relief valve operating

• Relief valve malfunctioning

Adjust or replace

8-S11

• Hydraulic line is clogged

Clean or replace

–

Hydraulic pump leak or damaged

Repair or replace

8-S14

Oil leaks from valves

Repair or replace

–

KiSC issued 03, 2016 A