Checking Relief Oil Pressure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Before starting work, confirm belt tension is proper.

Connect Tool between power steering oil pump discharge connector and high pressure hose. Bleed air from the hydraulic circuit with the shut-off valve in the fully open position.

Courtesy of NISSAN NORTH AMERICA, INC.

Tool number:
Pressure gauge and shut-off valve		(J-26357 and J-26357-10)
Power steering oil pump side	Connector A and O-ring	KV48105300-4 and 5295262U10 (--)
	Eye-bolt and O-ring	KV48105300-3 and 5295262U00 (--)
High pressure piping side	Connector B and O-ring	KV48105300-1 and 5295262U00 (--)
	Nut	KV48105300-2 (--)

Start engine. Allow engine to run until tank temperature reaches 50 deg.- 80 deg.C (122 deg.- 176 deg.F).
CAUTION:
- Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed, fluid pressure in power steering oil pump increases to maximum. This will raise power steering fluid temperature excessively.
- Be careful not to contact hose with belt when engine is started.

With engine at idle, close shut-off valve and read the relief oil pressure.

Relief oil pressure

: Refer to Power Steering Oil Pump .

CAUTION: Do not close shut-off valve of pressure gauge for more than 10 seconds.

After measurement, open shut-off valve slowly.
- If relief oil pressure is outside the specification, replace the power steering oil pump. Refer to Removal and Installation - VQ40DE , Removal and Installation - VK56VD .
After inspection, disconnect oil pressure gauge and oil pressure gauge adapter from hydraulic circuit, connect power steering oil pump discharge connector and high pressure hose. Add power steering fluid and bleed air from hydraulic circuit thoroughly. Refer to Refilling and Air Bleeding Hydraulic System .