Work Procedure
WARNING:
- Always check the piping for loose connections, damage, or twists before starting operation, since pressure in hydraulic circuit becomes high during operation.
- When repairing or replacing a malfunctioning part, always release pressure from hydraulic circuit, since dangerous conditions may be created when oil leakage occurs during air bleeding operation.
CAUTION:
- Clean surrounding areas of oil injection jack and air bleeder using steam before starting operation, since there may be mud on it.
- Clean suspension oil pump (SST: KV40107700) jack with steam before use.
- Check system pressure again 1 day or more after bleeding operation is complete, since system pressure may decrease when air bleeding is insufficient.
NOTE:
Air bleeding requires more suspension fluid than specified amount.
- Lift up the vehicle.
- Remove protector of PPMU.
- Remove cap of oil injection jack.
- Install hose (A) of a suspension oil pump (SST: KV40107700) to oil injection jack.CAUTION:
Jack must be securely inserted until a click sound can be heard.
- Loosen pressure reducing valve (A) of hose portion of suspension oil pump.
- Set knob (A) of suspension oil pump to the direction as shown in the illustration.
- Close pressure reducing valve of hose portion of suspension oil pump while sending oil by applying pressure using suspension oil pump. (Air bleeding in hose is complete.)
- Loosen needle valves A, C, and E of PPMU by approximately 2 rotations.CAUTION:
Never loosen the needle valve more than required.
- Install bleeder tube and drain tank to bleeder valve in upper side of rear shock absorber RH.
- Loosen bleeder valve and bleed air while sending oil by applying pressure using suspension oil pump, and then quickly tighten air bleeder.CAUTION:
Be careful that oil in suspension oil pump is not at half or less.
- Repeat step 10 until no air appears in bleeder tube.
- Tighten bleeder valve to the specified torque. Refer to FRONT TUBE ASSEMBLY : Exploded View (front shock absorber), and/or REAR SHOCK ABSORBER : Exploded View
(upper side of rear shock absorber).
Lower side of rear shock absorber Tightening torque : 8.3 N.m (0.85 kg-m, 73 in-lb) - Perform operation according to steps 9 to 12 in the order of rear shock absorber RH (lower side) → front shock absorber RH (upper side and lower side) → rear shock absorber LH (upper side and lower side) → front shock absorber LH (upper side and lower side).
- Repeat steps 9 to 13 (2nd turn).
- Refer to the illustration and send oil by applying pressure.
- Before vehicle identification number:
Destination Axle Seat Before vehicle identification number Applying pressure USA and Canada 2WD 7 JN8AZ2NFXL9702543 8 JN8AZ2ND9L9860130 4WD 7 JN8AZ2NE1L9253566 8 JN8AZ2NC8L9470322 Mexico 4WD 7 JN1AZ28C4L9050003 8 - After vehicle identification number:
Destination Axle Seat After vehicle identification number Applying pressure USA and Canada 2WD 7 JN8AZ2NFXL9702544 8 JN8AZ2ND9L9860131 4WD 7 JN8AZ2NE1L9253567 8 JN8AZ2NC8L9470323 Mexico 4WD 7 JN1AZ28C4L9050004 8
- Before vehicle identification number:
- 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) - Set knob (A) of suspension oil pump to the direction as shown in the illustration and check that reading of pressure gauge is 0 MPa.
- Remove hose of suspension oil pump.
- Install cap of oil injection jack.
- Install protector of PPMU. Refer to ACCUMULATOR : Exploded View .