Infiniti F50. Manual - part 709

POWER STEERING OIL PUMP

PS-25

C

D

E

F

H

I

J

K

L

M

A

B

PS

5.

Remove snap ring from drive shaft assembly and press out it.

CAUTION:

When removing snap ring, be careful not to damage drive
shaft assembly.

6.

Using a screwdriver, remove oil seal from housing.

7.

Remove O-ring from housing.

8.

Loosen lock nut and remove washer, joint then remove connec-
tor bolt, O-ring and pull out flow control valve and spring from
housing.

CAUTION:

Be careful not to drop and deform the flow control valve. 

9.

Remove suction pipe from housing.

10. Remove O-ring from housing.

INSPECTION AFTER DISASSEMBLY
Housing and Rear cover Inspection

●

Check housing and the inside of rear cover for damage. If any damage is found, replace with new part for
rear cover and replace with new power steering pump assembly for housing. 

Cartridge Assembly Inspection

●

Check cam ring, side plate, rotor and vane for damage. If any damage is found, replace cartridge assem-
bly with new one.

SST010B

SST034A

SST036A

PS-26

POWER STEERING OIL PUMP

ASSEMBLY

NOTE:
Fix oil pump in vise as vise occasion demands.

CAUTION:

When retaining drive shaft assembly in a vise, always use copper or aluminum plates between vise
and shaft.

1.

Apply a coat of Genuine Nissan PSF or equivalent to oil seal lip
and to the circumference of oil seal. Using proper tool, such as
hand press machine, install it to housing.
NOTE:
Do not reuse oil seal

2.

Apply a coat of Genuine Nissan PSF or equivalent to drive shaft
assembly and press drive shaft assembly into housing with suit-
able tool, then install snap ring.

NOTE:
Do not reuse snap ring.

3.

Apply a coat of Genuine Nissan PSF or equivalent to O-ring and
install O-ring into housing.

NOTE:
Do not reuse O-ring.

4.

Install side plate to housing.

5.

Install lock pin into lock pin hole, and install cam-ring as shown
in the figure.

●

When installing cam-ring, turn carved face with a letter (E) of
it to rear cover. 

CAUTION:

Do not confuse the assembling direction of cam-ring. If
cam-ring is installed facing the incorrect direction, it may
cause pump operation malfunction.

6.

Install rotor to housing.

SST038A

SGIA0422E

SST497A

POWER STEERING OIL PUMP

PS-27

C

D

E

F

H

I

J

K

L

M

A

B

PS

●

When installing rotor, turn punch mark face on rotor to hous-
ing.

7.

Install vane to rotor with facing the round portion outside.

8.

Check if drive shaft assembly turns smoothly.

9.

Install gasket to housing.
NOTE:
Do not reuse gasket.

10. Install rear cover to housing and tighten bolts at the specified

torque.

11. Install pulley to drive shaft assembly then tighten lock nut at the

specified torque.

12. Install spring, flow control valve, O-ring, connector bolt, joint,

washer to housing. Then tighten lock nut at the specified torque.

NOTE:
Do not reuse O-ring.

13. Apply a coat of Nissan PSF or equivalent to O-ring and install O-

ring to housing.

NOTE:
Do not reuse O-ring.

14. Install suction pipe to housing.

SST289A

SST843A

SGIA0425E

PS-28

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

PFP:00030

Steering Wheel

EGS0007A

Steering Angle

EGS0007B

Steering Column

EGS0007C

Steering Linkage

EGS0007D

Steering wheel axial end play:

0 mm (0 in)

Steering wheel free play

0 - 35 mm (0 - 1.38 in)

Drive type

2WD

1Inner wheel
Degree minute (Decimal degree)

Minimum

41

°

45

′

 (41.75

°

)

Nominal

42

°

 45

′

 (42.75

°

)

Maximum

45

°

45

′

 (45.75

°

)

Outer wheel
Degree mine (Decimal degree)

Nominal

33

°

50

′

 (33.83

°

)

Steering column length, Length L

642 - 644 mm (25.28 - 25.35 in)

638

±

1 (Most contracted position of telescopic steering.) To

668

±

1 (Most extended position of telescopic steering.)

STC1136D

Steering gear type

PR26AF

Tie rod ball joint outer 
socket

Oscillating torque

0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3 - 25 in-lb)

Spring balance reading
(Measuring point: stud bolt hole)

4.81 - 45.7 N (0.49 - 4.67 kg, 1.08 - 10.32 lb)

Sliding torque

0.3 - 2.9 N·m (0.03 - 0.29 kg-m, 3 - 25 in-lb)

Axial end play

0.5 mm (0.02 in) or less

Tie rod ball joint inner 
socket

Oscillating torque

1.0 - 7.8 N·m (0.1 - 0.8 kg-m, 9 - 69 in-lb}

Measured value of spring scale (measuring 
point: mark)

8.9 - 64 N (0.91 - 6.5 kg, 79 - 566 in)

Axial end play

0.2 mm (0.08 in) or less