Work Procedure

WARNING: This page is about a different car, the 2012 Infiniti QX56 and 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Clean surrounding areas of oil injection jack using steam before starting operation, since there may be mud on it.
Clean oil pressure gauge (special service tool: KV40108000) jack with steam before use.

Lift up the vehicle.
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.
Fig 1: Identifying Suspension Oil Pump Hose And Pressure Reducing Valve
Courtesy of NISSAN MOTOR CO., U.S.A.
Loosen needle valves A, C, and E of PPMU by approximately 2 rotations.
CAUTION: Never loosen the needle valve more than required.

Fig 2: Identifying Needle Valves Of PPMU
Courtesy of NISSAN MOTOR CO., U.S.A.
Refer to the figure and check the specified pressure.
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)

Fig 3: Pressure Versus Temperature Graph
Courtesy of NISSAN MOTOR CO., U.S.A.
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.
Install cap of oil injection jack.
Install protector of PPMU. Refer to "PPMU, MIDDLE TUBE ASSEMBLY, PPMU PIPE : EXPLODED VIEW ".

Fig 4: Checking Reading Of Oil Pressure Gauge
Courtesy of NISSAN MOTOR CO., U.S.A.