Infiniti QX4 (R50). Manual — part 550
SST847C
Installation
NBST0022
1.
Set wheels in the straight-ahead position.
2.
Install transfer gear assembly.
3.
Install column lower joint while aligning groove with protrusions
on the steering gear rear cover cap.
4.
Tighten bolt while aligning groove on steering gear. Before
tightening bolt, ensure it is inserted correctly.
SST848C
5.
When attaching steering column upper and lower joint to trans-
fer gear, it must be positioned as shown in figure at left.
SST707CA
Inspection
NBST0024
Do not disassemble steering transfer gear assembly.
I
Check that steering transfer gear assembly operates smoothly.
Also check for grease leakage, deformation and damage.
Replace steering transfer gear assembly if necessary.
I
Check rotating torque at input shaft in 360° and in both direc-
tions.
Rotating torque:
0.25 - 0.69 N·m (2.5 - 7.0 kg-cm, 2.2 - 6.1 in-lb)
If rotating torque is out of specification, replace steering trans-
fer gear assembly.
STEERING TRANSFER GEAR
Installation
ST-16
Components
NBST0026
SST618CB
1.
Rear cover cap
2.
Rear housing assembly
3.
Pinion seal ring
4.
Pinion assembly
5.
O-ring
6.
Shim
7.
Pinion oil seal
8.
Lock nut
9.
Adjusting screw
10. Spring
11. Retainer
12. Gear housing assembly
13. Rack oil seal
14. Rack assembly
15. Rack seal ring
16. O-ring
17. O-ring
18. Rack bushing
19. Rack oil seal
20. Snap ring
21. End cover assembly
22. Boot clamp
23. Dust boot
24. Boot clamp
25. Lock plate
26. Tie-rod inner socket
27. Tie-rod
28. Tie-rod outer socket
29. Cotter pin
30. Cylinder tube
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
RS
BT
HA
SC
EL
IDX
POWER STEERING GEAR AND LINKAGE
Components
ST-17
Removal and Installation
NBST0027
SST614C
1.
Gear and linkage assembly
2.
Rack mounting insulator
3.
Gear housing mounting bracket
4.
Cotter pin
SFA756B
CAUTION:
I
The rotation of the spiral cable (SRS “AIR BAG” compo-
nent part) is limited. If the steering gear must be removed,
set the front wheels in the straight-ahead direction. Do not
rotate the steering column while the steering gear is
removed.
I
Remove the steering wheel before removing the steering
lower joint to avoid damaging the SRS spiral cable.
I
Detach tie-rod outer sockets from knuckle arms with Tool.
SST615C
I
Install pipe connector.
I
Observe specified tightening torque when tightening high-pres-
sure and low-pressure pipe connectors. Excessive tightening
will damage threads of connector or O-ring.
Connector tightening torque:
Low-pressure side “1”
30 - 35 N·m (3.1 - 3.6 kg-m, 22 - 26 ft-lb)
High-pressure side “2”
30 - 35 N·m (3.1 - 3.6 kg-m, 22 - 26 ft-lb)
I
The O-ring in low-pressure pipe connector is larger than that
POWER STEERING GEAR AND LINKAGE
Removal and Installation
ST-18
in high-pressure connector. Take care to install the proper
O-ring.
SST616C
I
Initially, tighten nut on tie-rod outer socket and knuckle arm to
64 to 69 N·m (6.5 to 7.0 kg-m, 47 to 51 ft-lb). Then tighten fur-
ther to align nut groove with first pin hole so that cotter pin can
be installed.
CAUTION:
Tightening torque must not exceed 108 N·m (11.0 kg-m, 80 ft-
lb).
SST819A
I
Before removing steering column lower joint from gear, set
gear in neutral (wheels in straight-ahead position). After
removing steering column lower joint, put matching mark on
pinion shaft and pinion housing to record neutral position.
I
To install, set left and right dust boots to equal deflection.
Attach steering column lower joint by aligning matching marks
of pinion shaft and pinion housing.
SST617C
I
Tighten gear housing mounting bracket bolts in the order
shown.
Secure tightening torque:
118 - 137 N·m (12 - 14 kg-m, 87 - 101 ft-lb)
SST718CA
Disassembly
NBST0028
1.
Prior to disassembling, measure pinion rotating torque. Record
the pinion rotating torque as a reference.
I
Before measuring, disconnect cylinder tube and drain
fluid.
I
Use soft jaws when holding steering gear housing. Handle
gear housing carefully, as it is made of aluminum. Do not
grip cylinder in a vise.
2.
Remove pinion gear.
Be careful not to damage pinion gear when removing pinion
seal ring.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
RS
BT
HA
SC
EL
IDX
POWER STEERING GEAR AND LINKAGE
Removal and Installation (Cont’d)
ST-19
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