Infiniti G35 (V35) Sedan. Manual - part 1274

ST-46

< ON-VEHICLE REPAIR >

POWER STEERING OIL PUMP

• Fix oil pump with a vise if necessary.
• Use copper plates when fixing with a vise.

2.

Remove O-ring from body assembly.

3.

Remove rear side plate from cartridge, and then remove Teflon ring and O-ring from rear side plate.

4.

Remove rotor snap ring using a snap ring plier, and remove pul-
ley from body assembly.

CAUTION:

Remove pulley so as not to be damaged when removing
rotor snap ring.

5.

Remove cartridge, front side plate, flow control valve A, flow
control valve spring and flow control valve B assembly from
body assembly.

CAUTION:

Never drop and damage flow control valve A and flow con-
trol valve B assembly when removing.

6.

Remove oil seal from body assembly.

7.

Remove mounting bolt of suction pipe, and then remove suction
pipe from body assembly.

8.

Remove O-ring from body assembly.

9.

Remove bracket mounting bolts, and then remove bracket from
body assembly.

ASSEMBLY

1.

Apply recommended grease to oil seal lips. Apply recommended
fluid to around oil seal, and then install oil seal to body assembly
using a drift [SST: ST35300000 (

—

)]

CAUTION:

• Fix oil pump with a vise if necessary.
• Use copper plates when fixing with a vise.

2.

Install bracket to body assembly.

3.

If dowel pin has been removed, insert it into body assembly by
hand. If cannot be inserted by hand, lightly tap with a hammer.

4.

Install flow control valve A, flow control valve spring and flow
control valve B assembly as shown in the figure.

SGIA0059E

SGIA0526E

SGIA0527E

SGIA0526E

POWER STEERING OIL PUMP

ST-47

< ON-VEHICLE REPAIR >

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5.

Install front side plate (3) with dowel pin (2) on flow control valve
A (1) side as shown in the figure aligning with front side plate
cutout (A) to body assembly (4).

6.

Install cam ring as shown in the figure.

7.

Install pulley to body assembly.

CAUTION:

Never damage oil seal when installing pulley.

8.

Install rotor so that mark faces body assembly, and then install it
to pulley shaft.

9.

Install vane to rotor so that arc of vane faces cam ring side.

10. Install rotor snap ring to slit of pulley shaft using a hammer and a

10 mm (0.39 in) box.

CAUTION:

• Never damage rotor and pulley shaft.
• Oil pump assembly must be replaced if rotor is damaged.

SGIA1189E

SGIA0612E

SGIA0989E

SGIA0613E

SGIA0063E

ST-48

< ON-VEHICLE REPAIR >

POWER STEERING OIL PUMP

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.

WITHOUT 4WAS : Inspection

INFOID:0000000000958685

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-10, "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-45, "WITHOUT 4WAS : 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 washer.
• 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-55, "2WD : Exploded View"

 (2WD mod-

els), 

ST-56, "AWD : Exploded View"

 (AWD models).

• Securely insert harness connector to pressure sensor.

SGIA0530E

Standard

Relief oil pressure

: Refer to 

ST-60, "Relief Oil 

Pressure"

.

SGIA0915E

SGIA1379E

POWER STEERING OIL PUMP

ST-49

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7.

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

ST-10,

"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 there are.

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 there are.

WITH 4WAS

WITH 4WAS : Exploded View

INFOID:0000000000958686

REMOVAL AND INSTALLATION

DISASSEMBLY AND ASSEMBLY

1.

Power steering oil pump

2.

Bracket

: Vehicle front

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSGIA0046GB