Nissan Murano. Manual - part 1352

ST-102

< REMOVAL AND INSTALLATION >

[WITHOUT HEATED STEERING WHEEL]

POWER STEERING OIL PUMP

2.

Remove rear cover mounting bolts, and then remove rear cover from body assembly.

CAUTION:

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

3.

Remove O-ring from body assembly.

4.

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

5.

Remove rotor snap ring (1) using a snap ring pliers, and remove
cam ring, rotor and vane from body assembly.

CAUTION:

When removing the snap ring, never damage the pulley
shaft.

6.

Remove front side plate.

7.

Remove cartridge, flow control valve (1), flow control valve
spring (2) and flow control valve sub assembly (3) from body
assembly (4).

CAUTION:

Never drop and damage flow control valve and flow control
valve sub assembly when removing.

8.

Remove oil seal from body assembly.

9.

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

10. Remove pulley from body assembly.
11. Remove front bracket from body assembly.

12. Remove oil seal from body assembly using a flat-bladed screw-

driver.

CAUTION:

Never damage the body assembly.

ASSEMBLY

1.

Apply recommended grease to oil seal lips (1). Apply recom-
mended fluid to around oil seal. Install oil seal to body assembly
using a drift (commercial service tool).

CAUTION:

• Never reuse the oil seal.
• Fix oil pump with a vise if necessary.
• Use copper plates when fixing with a vise.

2.

Install front bracket to body assembly.

3.

Install pulley to body assembly.

4.

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

JSGIA0328ZZ

JSGIA0329ZZ

JSGIA0331ZZ

JSGIA0330ZZ

POWER STEERING OIL PUMP

ST-103

< REMOVAL AND INSTALLATION >

[WITHOUT HEATED STEERING WHEEL]

C

D

E

F

H

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J

K

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M

A

B

ST

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5.

Install flow control valve (1), flow control valve spring (2) and
flow control valve sub assembly (3) as shown in the figure to
body assembly (4).

6.

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).

7.

Install cam ring as shown in the figure.

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

drift (commercial service tool).

CAUTION:

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

JSGIA0329ZZ

SGIA1189E

SGIA0612E

SGIA0989E

SGIA0613E

ST-104

< REMOVAL AND INSTALLATION >

[WITHOUT HEATED STEERING WHEEL]

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.

18. Install rear bracket.

Inspection

INFOID:0000000009721538

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-78, "Inspection"

.

2.

Start the engine. Run the 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 the 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-101, "Disassembly and Assembly"

.

5.

Disconnect the oil pressure gauge from hydraulic circuit.

PGIA0035E

Standard

Relief oil pressure

: Refer to 

ST-109, "Relief 

Oil Pressure"

.

SGIA0915E

POWER STEERING OIL PUMP

ST-105

< REMOVAL AND INSTALLATION >

[WITHOUT HEATED STEERING WHEEL]

C

D

E

F

H

I

J

K

L

M

A

B

ST

N

O

P

6.

When installing eye bolt (1) and copper washers (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-106, "Exploded View"

.

• Securely insert harness connector to pressure sensor.

7.

Check fluid level, fluid leakage and air bleeding hydraulic sys-
tem after the installation. Refer to 

ST-78, "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 necessary.

Flow Control Valve Inspection

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

SGIA1379E