Work Procedure
CAUTION:
- Clean surrounding areas of oil injection jack using steam before starting operation, since there may be mud on it.
- Clean oil pressure gauge (SST: KV40108000) jack with steam before use.
- Remove protector of PPMU.
- Remove cap of oil injection jack.
- Install an oil pressure gauge (SST: KV40108000) (A) to oil injection jack.CAUTION:
- Jack must be securely inserted until a click sound can be heard.
- Pressure reducing valve (B) of the oil pressure gauge must be closed.
- Loosen needle valves A, C, and E of PPMU by approximately 2 rotations.CAUTION:
Never loosen the needle valve more than required.
- Lift up the vehicle.CAUTION:
Check that tires never contact the ground.
- Tighten needle valves A and C of PPMU.
- Loosen lock nuts of needle valves B and D of PPMU and then tighten needle valves B and D.
- Write down a value of the oil pressure gauge.
- Lift down the vehicle.CAUTION:
Check that the lift is fully lowered.
- Read a value of oil pressure gauge.
- Compare difference of reading with pressure reading in step 8.
Pressure change Pressure increases : PPMU malfunction Pressure does not change : Shock absorber malfunction - Tighten needle valves A, C, and E of PPMU to the specified torque.
Tightening torque : 8.3 N.m (0.85 kg-m, 73 in-lb) - Loosen needle valves B and D of PPMU by approximately 2 rotations and then tighten lock nut to the specified torque.CAUTION:
Never loosen the needle valve more than required.
Tightening torque : 20 N.m (2.0 kg-m, 15 ft-lb) - Loosen pressure reducing valve (A) of oil pressure gauge and then lower pressure.CAUTION:
Be careful since oil drains swiftly from oil drain hole (B).
- Check that reading of oil pressure gauge is 0 MPa.
- Remove oil pressure gauge.