1
Check the hydraulic oil
level
Insufļ¬cient
2 Add hydraulic oil.
Sufļ¬cient
ī
Abnormal noise from the
piston pump
Yes
Suction line faulty
īµīīīīīīīīīīīīīīīīīīīīīīī²īīīīīī
and hose.
No
ī©īīīīīīīīīīīīīīīīīīī
Action appropriate to the
īīīīīīīīīīīīīīīīīīīīīī
4
Check the main relief
valve
Faulty
Repair or replace the main re-
lief valve.
Normal
5 ī³īīīīīīīīīīīīīīīīīīīī
Repair or replace the faulty
piston pump.
1. Check the hydraulic oil level.
ā4. Disassembly and assembly, Hydraulic oil
tankā
2. Add hydraulic oil.
āNo operation is possible, 1. Check the hydraulic
oil level.ā
3. Abnormal noise from the piston pump.
The noise is likely to be caused by cavitation in the
pump, due to a faulty suction line. Check the follow-
īīīī
īīī ī·īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
īīī ī¤īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī-
īīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīīī
īīīīī
īīīīīīīī
ī
īīī¦īīīīīīīīīīīīīīīīīīīīīīīīīīīī
īīī ī³īīīīīīīīīīīīīīīīīīīīīīīīīīīīī
ā4. Disassembly and assembly, Hydraulic
tankā
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