Nissan Pathfinder (2007 year). Manual - part 350

POWER STEERING GEAR AND LINKAGE

PS-19

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2007 Pathfinder

2.

Install the large-diameter side of the boots to the gear housing
assembly.

3.

Install the small-diameter side of the boots to the groove of the
inner sockets.

4.

Install the boot clamps to the boots, as shown.

CAUTION:

Do not reuse the large boot clamps.

5.

Crimp the large boot clamps, using Tool.

6.

Install the cylinder tubes to the gear housing assembly.

7.

Install the lock nuts and outer sockets to the inner sockets.

8.

Thread the outer sockets onto the inner sockets to the specified
length "L", then tighten the lock nuts to the specified torque.
Refer to 

PS-17, "Disassembly and Assembly"

 . Reconfirm that

the tie-rod length "L" is within specification.

SGIA0550E

AST139

Tool number

: KV40107300 (

—

)

RAC1133D

Maximum inner socket 
length "L"

: 84.0 mm (3.31 in)

SGIA0167E

PS-20

POWER STEERING OIL PUMP

2007 Pathfinder

POWER STEERING OIL PUMP

PFP:49110

On-Vehicle Inspection and Service

EGS0011M

CHECKING RELIEF OIL PRESSURE

CAUTION:

Before starting work, confirm that the belt tension is within specification. Refer to 

EM-14, "Tension

Adjustment"

 .

1.

Connect the Tool between the power steering oil pump dis-
charge connector and the high pressure hose, then bleed the air
from the hydraulic circuit. Refer to 

PS-6, "Air Bleeding Hydraulic

System"

 .

2.

Start the engine. Run the engine until the power steering fluid temperature in reservoir tank reaches 50 –
80

°

C (122 – 176

°

F).

CAUTION:

●

Warm up the engine with the shut-off valve fully opened. If the engine is started with the shut-off
valve closed, fluid pressure in the power steering oil pump increases to maximum pressure.
This will raise fluid temperature excessively.

●

Do not contact the belt with the hose while the engine is running.

3.

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

CAUTION:

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

4.

After measurement, open the shut-off valve slowly.

●

If relief oil pressure is outside the specification, replace the power steering oil pump. Refer to 

PS-21,

"Removal and Installation"

 .

5.

After inspection, disconnect the oil pressure gauge and oil pressure gauge adapter from the hydraulic cir-
cuit, then connect the power steering oil pump discharge connector. Add fluid and bleed the air from the
hydraulic circuit thoroughly. Refer to 

PS-6, "Air Bleeding Hydraulic System"

 .

Tool number:

Pressure gauge and shut-off valve

KV48103500
(J-26357 and J-26357-10)

Oil pump side

Connector A and 
O-ring

KV48105300-4 and 5295262U10 
(

—

)

Eye-bolt and O-ring

KV48105300-3 and 5295262U00 
(

—

)

High pressure pip-
ing side

Connector B and 
O-ring

KV48105300-1 and 5295262U00 
(

—

)

Nut

KV48105300-2
(      —       )

Relief oil pressure

: 8.0 – 8.8 mPa (81.60 – 89.76 kg/cm

2

 , 1160.0 – 1276.0 psi)

WGIA0129E

POWER STEERING OIL PUMP

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2007 Pathfinder

Components

EGS0014K

Removal and Installation

EGS0011N

REMOVAL

1.

Drain the power steering fluid from the reservoir tank.

2.

Remove the engine room cover. Refer to 

EM-13, "Removal and Installation"

 .

3.

Remove the air duct assembly. Refer to 

EM-16, "Removal and Installation"

 .

4.

Remove the serpentine drive belt from the auto tensioner and power steering oil pump. Refer to 

EM-14,

"Removal and Installation"

 .

5.

Disconnect the pressure sensor electrical connector.

6.

Remove the high pressure and low pressure piping from the power steering oil pump. Refer to 

PS-24,

"HYDRAULIC LINE"

 .

7.

Remove the power steering oil pump bolts, then remove the power steering pump.

INSTALLATION

Installation is in the reverse order of removal. Refer to 

PS-24, "HYDRAULIC LINE"

  for tightening torque.

●

After installation, bleed the air from the hydraulic circuit thoroughly. Refer to 

PS-6, "Air Bleeding Hydraulic

System"

 .

NOTE:
Belt tension is automatic and requires no adjustment.

1.

Connector

2.

Suction pipe

3.

O-ring

4.

Bracket

5.

Pulley

6.

Lock washer

7.

Body assembly

8.

Copper washers

LGIA0036E

PS-22

POWER STEERING OIL PUMP

2007 Pathfinder

Disassembly and Assembly

EGS0011O

INSPECTION BEFORE DISASSEMBLY

Disassemble the power steering oil pump only if the following items are found.

●

Deformed or damaged pulley, bracket, connector or suction pipe

●

Oil leakage from the suction pipe or connector. 

DISASSEMBLY

NOTE:
Mount the power steering oil pump in a vise as needed.

1.

Remove the connector bolt, connector and copper washers.

CAUTION:

Do not reuse the copper washers.

2.

Remove the suction pipe and O-ring.

CAUTION:

Do not reuse the O-ring.

3.

Remove the pulley nut and pulley.

4.

Remove the bracket bolts and bracket.

INSPECTION AFTER DISASSEMBLY
Body Assembly Inspection

Check the power steering oil pump body assembly for damage. If any damage is found, replace with a new
power steering oil pump assembly.

ASSEMBLY

Assembly is in the reverse order of disassembly.

1.

Connector

2.

Suction pipe

3.

O-ring

4.

Bracket

5.

Pulley

6.

Lock washer

7.

Body assembly

8.

Copper washers

LGIA0036E

POWER STEERING OIL PUMP

PS-23

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2007 Pathfinder

CAUTION:

●

Do not reuse the copper gaskets

●

Do not reuse the O-ring. Apply a coat of Genuine Nissan PSF or equivalent to the O-ring. Refer to

MA-11, "RECOMMENDED FLUIDS AND LUBRICANTS"

 .

PS-24

HYDRAULIC LINE

2007 Pathfinder

HYDRAULIC LINE

PFP:49721

Removal and Installation

EGS0011P

Refer to the following illustration for hydraulic line removal and installation.

1.

Reservoir tank

2.

Suction hose

3.

High pressure hose

4.

Oil cooler

5.

Steering gear assembly

6.

Reservoir tank

LGIA0035E

HYDRAULIC LINE

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7.

Reservoir tank bracket

8.

Return hose

9.

Hose clamps

10. Suction hose

11. Connector bolts

12. Copper washers

PS-26

SERVICE DATA AND SPECIFICATIONS (SDS)

2007 Pathfinder

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Steering Wheel

EGS0011Q

Steering Column

EGS0011R

End play of the axle direction for steering wheel

0 mm (0 in)

Steering wheel turning force

39 N (4 kg-f, 9 lb-f) or less

Steering wheel play on the outer circumference

0 

−

 35 mm (0 

−

 1.38 in)

Steering column length “L1”

165.1 mm (6.500 in)

Steering column length “L2”

258.0 mm (10.16 in)

Tilt range "A"

73.8 mm (2.906 in)

SGIA0475E

WGIA0083E