Infiniti FX35 / FX45. Manual - part 872

PS-30

< SERVICE INFORMATION >

POWER STEERING OIL PUMP

DISASSEMBLY

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

CAUTION:

When retaining drive shaft in a vise, always use copper or aluminum plates between vise and shaft.
1.

Unscrew four rear cover bolts and remove rear cover from body assembly.

2.

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

3.

Remove rotor snap ring with snap ring pliers, and remove pulley
from body assembly.

CAUTION:

When removing rotor snap ring, be careful not to damage
pulley shaft.

4.

Remove oil seal from body assembly.

5.

Remove cam ring, rotor, vane, front side plate, flow control valve
A, spring, flow control valve B assembly and O-ring from body
assembly.

CAUTION:

Be careful not to drop and deform flow control valve A and
flow control valve B assembly.

6.

Remove suction pipe from body assembly.

7.

Remove O-ring from suction pipe.

8.

Remove bracket from body assembly.

INSPECTION 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 (front and rear) for damage. Side plate (front and rear) must be replaced as a set if they are
damaged.

Flow Control Valve Inspection

Check flow control valve A, flow control valve spring and flow control valve B assembly for damage. Replace if
there are.

ASSEMBLY

NOTE:
Fix oil pump in vise as occasion demands.

CAUTION:

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

SGIA0059E

SGIA0526E

POWER STEERING OIL PUMP

PS-31

< SERVICE INFORMATION >

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1.

Apply recommended grease to oil seal lips. Apply recommended
fluid to around oil seal, and then install oil seal to body assembly
using the drift [SST].

2.

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.

3.

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

4.

Match dowel pin A on flow control valve A, shown in the figure,
with cutout B of front side plate and then install front side plate to
body assembly.

5.

Install cam ring onto front side plate with smaller slit of cam ring
facing body assembly.

6.

Install pulley to body assembly.

CAUTION:

When installing pulley, be careful not to scratch oil seal.

SGIA0527E

SGIA0526E

SGIA0528E

SGIA0623E

PS-32

< SERVICE INFORMATION >

POWER STEERING OIL PUMP

7.

Face the side of rotor with punch mark towards rear cover, and
attach rotor to pulley shaft.

8.

Install vane to rotor with facing the round portion outside.

9.

Using a hammer and a 10 mm (0.39 in) box, install rotor snap
ring to slot in pulley shaft.

CAUTION:

Be careful not to damage rotor and pulley shaft.

10. Match dowel pin A on flow control valve A, shown in the figure,

with cutout B of rear side plate and install rear side plate to car-
tridge.

11. Apply recommended fluid to O-ring and install O-ring into rear

side plate.

12. Apply recommended fluid to Teflon ring and Install Teflon ring

into rear side plate.

13. Position rear cover on body assembly and tighten mounting

bolts to specified torque.

14. Apply recommended fluid to O-ring and install O-ring into suc-

tion pipe.

15. Install suction pipe into body assembly.

16. Install bracket to body assembly and tighten mounting bolts to specified torque.

Disassembly and Assembly (VK45DE Models)

INFOID:0000000001327722

COMPONENTS

SGIA0529E

SST843A

SGIA0063E

SGIA0530E

POWER STEERING OIL PUMP

PS-33

< SERVICE INFORMATION >

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INSPECTION BEFORE DISASSEMBLY

Disassemble power steering oil pump only if the following items are found.
• Oil leakage from oil pump.
• Deformed or damaged pulley
• Poor performance 

DISASSEMBLY

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

CAUTION:

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

1.

Unscrew three bracket bolts and remove bracket from rear cover.

2.

Unscrew four rear cover bolts and remove rear cover from body assembly.

3.

Remove gasket from body assembly.

4.

Remove lock pin, cartridge and side plate from body assembly.

5.

Remove pulley from drive shaft assembly.

1.

Bracket

2.

Rear cover

3.

Gasket

4.

Lock pin

5.

Cam ring

6.

Rotor

7.

Vane

8.

Cartridge

9.

Side plate

10. O-ring

11.

Body assembly

12. Oil seal

13. Drive shaft assembly

14. Snap ring

15. Pulley

16. Spring washer

17. Spring

18. Flow control valve

19. O-ring

20. Connector bolt

21. Joint 

22. Washer

23. Suction pipe

24. O-ring

Refer to 

GI-8, "Component"

 and the followings for the symbols in the figure.

: Apply power steering fluid

: Apply multi-purpose grease

SGIA1680E