wsm B2420 - Page 258

HYDRAULIC SYSTEM
B2420, WSM
8-S1
1. TROUBLESHOOTING
9Y1210436HYS0001US0
Symptom Probable Cause Solution
Reference
Page
Implement Does Not
Rise (No Noise)
Control valve broken Replace 8-S12
Control valve improperly adjusted Adjust 8-S6
Control valve improperly assembled Repair 8-S13
Relief valve improperly assembled Replace 8-S6
Spool sticks Repair 8-S13
Piston O-ring or cylinder damaged Replace 8-S12
Implement Does Not
Rise (Noise)
Oil filter cartridge clogged Clean or Replace G-26
Suction pipe loosen or broken Repair or Replace –
Suction pipe connecting hose loosen or broken Repair or Replace –
Suction pipe O-ring broken Replace –
Insufficient transmission oil Refill G-26
Relief valve setting pressure too low Adjust or Replace 8-S6
Hydraulic pump broken Replace 8-S4
Implement Does Not
Reach Maximum
Height
Feedback rod improperly adjusted Adjust 8-S6
Implement Does Not
Lower
Control valve malfunctioning Repair or Replace 8-S12
Implement Drops by
Its Weight
Hydraulic cylinder worn or damaged Replace 8-S14
Piston O-ring worn or damaged Replace 8-S12
Control valve malfunctioning Replace 8-S12
Implement Hunts Control valve improperly assembled Adjust 8-S13
KiSC issued 06, 2012 A