12
REV. 03/2015
5. The vehicle cannot lower to bottom?
Cause 2 Parts deformation of parts.
Troubleshooting:
Check other parts of the vehicle, remove
foreign objects and replace the parts with
deformation.
6. Oil leakage?
Cause 1 Damaged seals.
Troubleshooting:
Replace the damaged seals.
Cause 2 Loose parts.
Troubleshooting:
Carry out the troubleshooting again and
tighten the loose parts.
Cause 3 Sealing surface of parts scratched.
Troubleshooting:
Replace the damaged parts and related
seals.
4.4 Oil Seal Replacement
1. Replace the main oil seal of piston pump.
Failure symptom: oil leakage at piston pump.
Cause: Damaged pump oil seals.
Troubleshooting: Replace the pump seals.
Replacement procedure: Remove the piston pump
element, big spring and other parts, then get the oil
seal removal tools A, B and C ready, and replace the
oil seals with these tools.
i
The pump oil seal groove is of closed structure,
extra care shall be taken upon replacement.
HYDRAULIC SYSTEM
