Infiniti F50. Manual - part 708

POWER STEERING GEAR AND LINKAGE

PS-21

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3.

Using tool, compress rack Teflon ring securely on rack.
Bold

→

Always insert tool from rack gear side.

4.

Remove rack oil seal.

CAUTION:

Do not use old rack oil seal is not reusable. Always use a
new rack oil seal.

a.

To prevent inner rack oil seal from being damaged, wrap an
place plastic film around the rack teeth surface and place the oil
seal around sheet. Pull the sheet with oil seal around it until the
seal passes the rack teeth surface.

b.

Install center bushing to rack. Be careful not to damage the
inside of gear housing assembly with rack. If damaged, replace
gear housing assembly. Otherwise, oil leaks may result.

CAUTION:

Be careful not to damage the inside of gear housing assem-
bly with rack. If damaged, replace gear housing assembly.
Otherwise, oil leaks may result.

c.

Insert rack oil seal (inner) into rack piston. Move rack in the gear
housing assembly so that rack oil seal (inner) can be pressed
against center bushing.

CAUTION:

Be careful not to damage the inside of gear housing assem-
bly with rack. If damaged, replace gear housing assembly. Otherwise, oil leaks may result.

d.

To prevent the rack oil seal (outer) from being damaged, wrap a
place plastic film around the end of rack and place the oil seal
around the sheet. Pull the sheet with oil seal around it until the
oil seal passes the end of rack. Then, install rack oil seal in place
with end cover assembly.

SST885B

SST201A

SST830A

STC0948D

SST321B

PS-22

POWER STEERING GEAR AND LINKAGE

e.

The rack oil seal must be installed with the lips of inner and outer
seals facing each other.

5.

Using a 42 mm (1.65 in) open head (special service tool),
tighten end cover assembly to specified torque.

CAUTION:

Do not damage the surface of rack. If damaged, replace
rack assembly. Otherwise, oil leaks may result.

6.

Tighten end cover assembly and then crimp cylinder at the point
shown in the figure to prevent assembly from loosening.

7.

Install shims and an O-ring to gear subassembly.

●

Whether or not gear subassembly is replaced, install as many
shims as originally attached.

CAUTION:

Do not use old O-ring. Always use a new O-ring.

8.

Install gear subassembly to gear housing assembly.

9.

Install lock plate to rack.

CAUTION:

Do not use old lock plate. Always use a new lock plate.

a.

Attach a spacer ring to rack temporarily.

CAUTION:

Do not use old ring. Always use a new spacer ring.

b.

Install lock plate to inner socket.

c.

Apply a coat of locking sealant to the thread of inner socket,
screw the socket into rack and then tighten to specified torque.

d.

Crimp lock plate at two slots in the rack.

e.

Install spacer ring to lock plate as shown in the figure.

CAUTION:

When installing spacer ring, be careful not to scratch ring.

: 58.9 - 73.5 N·m (6.0 - 7.4 kg-m, 44 - 54 ft-lb)

SGIA0058E

SST073B

SST866C

POWER STEERING OIL PUMP

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POWER STEERING OIL PUMP

PFP:49110

On-Vehicle Service

EGS00076

CHECKING HYDRAULIC SYSTEM

Before starting work, confirm belt tension is proper.

1.

Raise vehicle. Connect oil pressure gauge (special service tool)
and oil pressure gauge adapter (special service tool) between
the oil pump discharge connector and high pressure hose and
then bleed hydraulic circuit.

2.

Start engine. Allow engine to run until tank temperature reaches
60 - 80

°

C (140 to 176

°

F).

WARNING:

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

3.

With engine idling, close oil pressure gauge valve (special service tool) and read the relief oil pressure.

4.

After measurement, open valve slowly.

CAUTION:

Do not hold steering wheel in a locked position for more than 15 seconds.

●

If relief pressure is outside specification, disassemble and service oil pump. Refer to 

PS-24, "Disas-

sembly and Assembly"

 .

5.

After inspection, remove oil pressure gauge (special service tool) and oil pressure gauge adapter (special
service tool) from hydraulic circuit, add fluid and bleed hydraulic circuit thoroughly.
Refer to  

PS-6, "Bleeding Hydraulic System"

 .

CHECKING AND ADJUSTING DRIVE BELTS (FOR POWER STEERING)

Refer to MA section,  

EM-12, "Checking Drive Belts"

 .

Removal and Installation

EGS00077

REMOVAL

1.

Remove battery and radiator reservoir tank from vehicle.

2.

Drain power steering fluid.

3.

Loosen adjusting screw and bolts for oil pump attaching bracket and remove belt.

4.

Remove oil pump union bolt and hose.

5.

Remove oil pump bolts and oil pump attaching bracket.

6.

Remove oil pump from vehicle.

INSTALLATION

Paying attention to following items, install in reverse order of removal.

●

After installation, adjust belt tension. Refer to 

EM-12, "Tension Adjustment"

 .

●

After installation, bleed circuit. Refer to 

PS-6, "Bleeding Hydraulic System"

 .

Relief pressure specification

: 8,630 - 9,219 kPa (88 - 94 kg/cm

2

 , 1,251 - 1,337 psi)

SST834-F

PS-24

POWER STEERING OIL PUMP

Disassembly and Assembly

EGS00078

PRE-DISASSEMBLY INSPECTION

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

●

Oil leak from any point show in the figure

●

Deformed or damaged pulley

●

Poor performance 

DISASSEMBLY

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

CAUTION:

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

1.

Unscrew four rear cover bolts and remove rear cover from housing.

2.

Remove gasket from body assembly.

3.

Remove lock pin, cartridge and side plate from housing.

4.

Remove pulley from drive shaft assembly.

SGIA0664E

SST128B