Power Steering Oil Pump: Inspection

RELIEF OIL PRESSURE

1. Connect Tool (A) between power steering oil pump discharge connector and high-pressure hose. Bleed air from hydraulic circuit while opening valve fully. Refer to Refilling and Air Bleeding Hydraulic System .

   Courtesy of NISSAN NORTH AMERICA, INC.

   (1)	: High pressure hose
   (2)	: Low pressure hose
   (3)	: Power steering oil pump
   (4)	: Power steering gear
   (5)	: Reservoir tank
   (6)	: Bolt
   (7)	: Bolt
   (8)	: Washer
   (9)	: Eye joint
   (10)	: Flare joint
   (A)	: Tool
   (B)	: Power steering oil pump outlet
   ( )	: Direction of oil flow

   Tool numbers

   : KV48102500 (J-33914)

2. Start engine. Run engine until power steering fluid temperature reaches 50 deg. - 80 deg. C (122 deg. - 176 deg. F).
   CAUTION:

   • Leave valve of hydraulic pressure gauge fully open while starting and running engine. If engine is started with valve closed, hydraulic pressure in power steering oil pump goes up to relief pressure along with unusual increase of fluid temperature.
   • Be sure to keep hose clear of belts and other parts when engine is started.
3. Fully close Tool valve with engine at idle and measure relief oil pressure.

   Relief oil pressure

   : Refer to Oil Pump

   CAUTION: Do not keep valve closed for 10 seconds or longer.
4. Open valve slowly after measuring. Replace power steering oil pump if relief oil pressure is outside specification.
5. After inspection, disconnect Tool from hydraulic circuit, then add fluid and bleed air. Refer to Refilling and Air Bleeding Hydraulic System .