OPERATOR'S MANUAL MAINTENANCE

Section E - Hydraulics
Fault Finding
Hydraulic System
E-237 E-237
9803/9880-3
Hydraulic System
Table 3.
Symptoms Possible Causes Countermeasures
The hydraulic system is not
working well or not at all
1. Pump problem. Check the pressure or replace the pump.
2.Foreign matter clogging inside the relief
valve.
Disassemble the relief valve and clean.
3. Relief valve trouble. Check according to the maintenance
procedures.
4. Ram trouble. Repair or replace.
5. Load is too heavy. Check the circuit pressure.
6. Crack in the valve. Replace the valve assembly.
7. Spool does not stroke fully. Check the spool movement and operation
link.
8. Oil level too low. Replenish hydraulic oil.
9. Filters inside circuit are clogged. Clean filter or replace.
10. Hose runs are kinked. Check the hoses.