Troubleshooting - Kubota B2301 Workshop Manual

B2301, B2601, WSM

1. TROUBLESHOOTING

Symptom
Implement Does Not
Rise (No Noise)
Implement Does Not
Rise (Noise)
Implement Does Not
Reach Maximum
Height
Implement Does Not
Lower
Implement Drops by
Its Weight
Probable Cause and
Checking Procedure
1. Transmission fluid
improper
2. Hydraulic pump
malfunctioning
3. Relief valve malfunctioning Solution order
4. Piston O-ring or cylinder
damaged
5. Control valve
malfunctioning
6. Control valve improperly
adjusted
7. Control valve improperly
assembled
1. Transmission fluid
improper
2. Oil filter cartridge clogged
3. Suction pipe loosen or
broken
4. Suction pipe connecting
hose loosen or broken
5. Relief valve setting
pressure too low
6. Hydraulic pump broken
1. Feedback rod improperly
adjusted
1. Control valve
malfunctioning
1. Piston O-ring worn or
damaged
2. Control valve
malfunctioning
Solution
Check transmission oil
Solution order
1. Check hydraulic flow test
2. Replace hydraulic pump
1. Check relief valve
2. Check or adjust relief valve
3. Replace relief valve
Replace O-ring or cylinder
Replace control valve
Check or adjust control valve
Repair control valve
Check transmission oil
Replace oil filter cartridge
Check or repair suction pipe
Check or repair suction hose
Solution order
1. Check relief valve
2. Check or adjust relief valve
3. Replace relief valve
Solution order
1. Check hydraulic flow test
2. Replace hydraulic pump
Solution order
1. Check lift arm free play
2. Adjust feedback rod
Replace control valve
Replace O-ring or cylinder
Replace control valve
7-S1
HYDRAULIC SYSTEM
Reference
Page
G-8
7-S4
7-S9
7-S8
7-S8
7-S8
7-S17
7-S13
7-S12
7-S15
G-8
G-26, G-29
7-S9
7-S9
7-S8
7-S8
7-S8
7-S4
7-S9
7-S8
7-S8
7-S13
7-S17
7-S13
9Y1211156HYS0001US0
KiSC issued 11, 2014 A