Infiniti FX35 / FX45. Manual - part 870

 

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Infiniti FX35 / FX45. Manual - part 870

 

 

PS-22

< SERVICE INFORMATION >

POWER STEERING GEAR AND LINKAGE

Gear Housing Assembly

Check gear housing assembly for damage and scratches (inner wall). Replace it, if necessary.

Outer Socket and Inner Socket

Swing Torque

• Hook a spring balance at the point shown in the figure. Confirm if

the reading is within the specification. When ball stud and inner
socket start moving the measured value must be within the specifi-
cation. If the reading is outside the specification, replace socket.

Rotating Torque

• Using a preload gauge (SST), check if reading is within the value

specified below. If the value is outside the standard, replace outer
sockets.

Axial End Play

• Apply load of 490 N (50 kg, 110 lb) to ball stud axially. Use a dial

gauge to measure the amount of the movement that the stud
makes. Check if the reading is within the specified below. If the
value is outside the standard, replace outer and inner sockets.

ASSEMBLY

1.

Apply recommended fluid to O-ring. Put an O-ring into rack Teflon ring.

SGIA0547E

Item

Outer socket

Inner socket

Measuring point

Cotter pin hole of stud 

Shown as L: 83.2 mm (3.276 in)

Swing torque

0.3 

 2.9 N·m (0.03 

 0.29 kg-m, 3 

 25 in-lb)

1.0 

 7.8 N·m (0.11 

 0.79 kg-m, 9 

 69 in-lb)

Measuring value

4.84 

 46.7 N (0.5 

 4.8 kg, 1.0 - 10 lb)

12.1 

 93.7 N (1.2 

 9.6 kg, 3.0 

 21 lb)

Rotating torque

0.3 

 2.9 N·m (0.03 

 0.29 kg-m, 3 

 25 in-lb)

SST882B

Outer socket

0.5 mm (0.02 in) or less

Inner socket

0.2 mm (0.01 in) or less

SGIA0057E

POWER STEERING GEAR AND LINKAGE

PS-23

< SERVICE INFORMATION >

C

D

E

F

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PS

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2.

Heat rack Teflon ring to approximately 40

°

C (104

°

F) with a

dryer. Assemble it to mounting groove of rack.

3.

To fit rack Teflon ring on rack, use rack Teflon ring installation
tool (SST) from tooth side. Compress rim of ring with the tool.

4.

Apply recommended grease to rack oil seal. Insert rack oil seal,
then insert rack assembly to gear housing assembly.

CAUTION:

• When inserting rack assembly, do not damage retainer

sliding part. If it is damaged, replace gear housing assem-
bly. 

• When inserting rack assembly, do not damage cylinder

inner wall. If it is damaged, it may cause oil leaks. Replace
gear housing assembly.

• Attach rack oil seal. Both inner lip and outer lip should

face each other.

a.

To avoid damaging inner rack oil seal, wrap an OHP sheet
[approximately. 70 mm (2.76 in) 

×

 100 mm (3.94 in) around rack

tooth. Place oil seal on sheet. Then, pull oil seal along with OHP
sheet until they pass the toothed section of rack, then remove it.

b.

Insert rack oil seal (inner) to piston (rack Teflon ring) position
and push retainer to adjust screw side with fingers lightly, and
then make rack move in gear housing assembly, install rack oil
seal (inner) to fit with gear housing assembly.

SGIA0153E

SGIA0154E

SGIA0205E

SGIA0155E

SGIA0548E

PS-24

< SERVICE INFORMATION >

POWER STEERING GEAR AND LINKAGE

c.

When installing outer rack oil seal, cover the end of rack with an
OHP sheet [70 mm (2.76 in) 

×

 100 mm (3.94 in)]. It will avoid

damaging rack oil seal. Then place oil seal on sheet. Pull rack oil
seal along with OHP sheet until they pass rack end. Then
remove OHP sheet.

d.

Install end cover assembly to rack, move it to gear housing
assembly.

5.

Using a 45 mm (1.77 in) open head (suitable tool), tighten end
cover assembly at the specified torque.

CAUTION:

Do not damage rack surface. If it is damaged, it may cause
oil leaks. Replace rack assembly.

6.

After tightening end cover assembly, caulk cylinder at one point
as shown in the figure using a punch. This will prevent end cover
from getting loose.

7.

Install pinion assembly to gear housing assembly.

CAUTION:

In order to protect oil seal from any damage, insert pinion
assembly out straightly.

8.

Apply recommended fluid to O-ring. Install O-ring to rear cover.

9.

Use a rear cover wrench (SST), install rear cover to gear hous-
ing assembly.

10. Confirm projection on rear cover cap nearly fit with marking posi-

tion on gear housing assembly.

11. Apply recommended thread locking sealant to the thread (2

turns thread), and then screw in the adjusting screw until it
reaches height “H” from gear housing assembly measured
before disassembling.

12. Rotate pinion ten times whole range of rack so that parts get to

fit with each other.

SGIA0157E

SST081B

SGIA0158E

SGIA0568E

POWER STEERING GEAR AND LINKAGE

PS-25

< SERVICE INFORMATION >

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13. Measure pinion rotating torque within from –180

°

 to +180

°

,

make preload gauge (SST) and torque adapter (SST) in rack
neutral position, then hold preload gauge (SST) at maximum
torque.

14. After loosening adjusting screw once, tighten it again with torque

of 5.4 N·m (0.55 kg-m, 48 in-lb). After that loosen it within 20

°

 to

40

°

.

15. Measure pinion rotating torque with torque adapter (SST) and

preload gauge (SST), then confirm whether it's reading is within
the specified value. If the reading is not within the specified
value, readjust screw angle with adjusting screw. Change gear
assembly to new one, if the reading is still not within the speci-
fied value or the rotating torque of adjusting screw is less than 5
N·m (0.51 kg-m, 44 in-lb).

16. Turn pinion fully to the end of the left with inner socket to gear housing assembly.

17. Set dial gauge to rack as shown in the figure. Measure vertical

movement of rack when pinion is turned counterclockwise with
torque of 19.6 N·m (2.0 kg-m, 14 ft-lb). Check reading is within
the specified value. If reading is outside of the specification,
readjust screw angle with adjusting screw. If reading is still out-
side of specification, or if the rotating torque of adjusting screw is
less than 5 N·m (0.51 kg-m, 44 in-lb), replace steering gear
assembly.

18. Install large-diameter side of boot to gear housing assembly.

19. Install small-diameter side of boot to the mounting groove of

inner socket boot.

20. Install boot clamp to the small-diameter side of boot.

21. Install boot clamp to the large-diameter side of boot.

SGIA0483E

Pinion rotating torque:

                      Around neutral position (within

±

100

°

)

Average “A”:

                0.8 

 2.0 N·m (0.08 

 0.20 kg-m, 7 

 18 in-lb)

Other than above (more than

±

100

°

)

Maximum variation “B”:

                2.3 N·m (0.23 kg-m, 20 in-lb)

SGIA0160E

SGIA0484E

Amount of vertical movement with rack

Less than 0.265 mm (0.01 in)

Measuring point

Axial direction of rack

5 mm (0.2 in) away from end of gear housing

Radius direction of rack

Shaft direction of adjusting screw

SGIA1325E

 

 

 

 

 

 

 

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