Infiniti EX35. Manual - part 1392

POWER STEERING OIL PUMP

ST-49

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11. Install rear side plate with dowel pin A on flow control valve A

side as shown in the figure aligning with rear side plate cutout B
to cartridge.

12. Apply recommended fluid to O-ring, and then install O-ring to

body assembly.

13. Apply recommended fluid to O-ring, and then install O-ring to

rear side plate.

14. Apply recommended fluid to Teflon ring, and then install Teflon

ring to rear side plate.

15. Install rear cover to body assembly.

16. Apply recommended fluid to O-ring, and then install O-ring to

body assembly.

17. Install suction pipe to body assembly.

Inspection

INFOID:0000000003134410

RELIEF OIL PRESSURE

CAUTION:

Make sure that belt tension is normal before starting the following procedure.

1.

Connect the oil pressure gauge [SST: KV48103500 (J-26357)]
and the oil pressure gauge adapter [SST: KV48102500 (J-
33914)] between oil pump discharge connector and high-pres-
sure hose. Bleed air from the hydraulic circuit while opening
valve fully. Refer to 

ST-11, "Inspection"

.

2.

Start engine. Run engine until oil temperature reaches 50 to
80

°

C (122 to 176

°

F).

CAUTION:

• Leave the valve of the oil pressure gauge fully open while

starting and running engine. If engine is started with the
valve closed, the hydraulic pressure in oil pump goes up
to the relief pressure along with unusual increase of oil
temperature.

• Be sure to keep hose clear of belts and other parts when

engine is started.

3.

Fully close the oil pressure gauge valve with engine at idle and
measure the relief oil pressure.

CAUTION:

Never keep valve closed for 10 seconds or longer.

4.

Open the valve slowly after measuring. Repair oil pump if the relief oil pressure is outside the standard.
Refer to 

ST-46, "Disassembly and Assembly"

.

5.

Disconnect the oil pressure gauge from hydraulic circuit.

6.

When installing eye bolt (1) and copper washer (2) to oil pump
(3), refer to the figure.

CAUTION:

• Never reuse copper washers.
• Apply power steering fluid or equivalent to around copper

washer, then install eye bolt.

• Install eye bolt with eye joint (assembled to high pressure

hose) (B) protrusion (A) facing with pump side cutout, and
then tighten it to the specified torque after tightening by
hand. Refer to 

ST-51, "2WD : Exploded View"

 (2WD mod-

els), 

ST-52, "AWD : Exploded View"

 (AWD models).

• Securely insert harness connector to pressure sensor.

PGIA0035E

Standard

Relief oil pressure

: Refer to 

ST-55, "Relief Oil 

Pressure"

.

SGIA0915E

SGIA1379E

ST-50

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POWER STEERING OIL PUMP

7.

Check fluid level, fluid leakage and air bleeding hydraulic system after the installation. Refer to 

ST-11,

"Inspection"

.

BEFORE DISASSEMBLY

Disassemble oil pump only when the following malfunctions occur.
• If oil leakage is found on oil pump.
• Oil pump pulley is damaged or deformed.
• Performance of oil pump is low. 

AFTER DISASSEMBLY

Body Assembly and Rear Cover Inspection

Check body assembly and rear cover for internal damage. Replace rear cover if it is damaged. Replace oil
pump assembly if body assembly is damaged.

Cartridge Assembly Inspection

Check cam ring, rotor and vane for damage. Replace cartridge assembly if necessary.

Side Plate Inspection

Check side plate for damage. Replace side plate if there are.

Flow Control Valve Inspection

Check flow control valve and spring for damage. Replace if necessary.

HYDRAULIC LINE

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HYDRAULIC LINE

2WD

2WD : Exploded View

INFOID:0000000003134415

AWD

1.

Collar

2.

Reservoir tank bracket

3.

Bushing

4.

Reservoir tank

5.

Clamp

6.

Suction hose

7.

Return hose

8.

Oil cooler

9.

Pressure sensor

10. Eye bolt

11.

Copper washer

12. High pressure piping and low pres-

sure piping

13. O-ring

A.

To power steering oil pump suction 
hose.

B.

To power steering oil pump.

: Vehicle front

: Apply power steering fluid.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JSGIA0366GB

ST-52

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HYDRAULIC LINE

AWD : Exploded View

INFOID:0000000003134416

1.

Collar

2.

Reservoir tank bracket

3.

Bushing

4.

Reservoir tank

5.

Clamp

6.

Suction hose

7.

Return hose

8.

Oil cooler

9.

Pressure sensor

10. Eye bolt

11.

Copper washer

12. High pressure piping and low pres-

sure piping

13. O-ring

A.

To power steering oil pump suction 
hose.

B.

To power steering oil pump.

: Vehicle front

: Apply power steering fluid.

Refer to 

GI-4, "Components"

 for symbols not described on the above.

JSGIA0367GB