Infiniti QX4 (R50). Manual — part 552
SST609C
14. Ensure that the rack is centered. Install rear cover cap so that
its protrusion is positioned as shown in figure.
Be careful not to damage worm ring and oil seal.
15. Install retainer, spring and adjusting screw temporarily.
SST135C
16. Install new lock plate.
I
Attach lock plate 2 to side rod inner socket 1.
I
Apply locking sealant to inner socket threads 3.
Screw inner socket into rack 4 and tighten to specified torque.
I
Clinch two places of lock plate at rack’s groove.
CAUTION:
To prevent scratching the boot, remove burrs from lock plate.
SST655C
17. Tighten outer socket lock nut.
Tie-rod length “L”:
Refer to SDS, ST-33.
18. Measure rack stroke.
Rack stroke “S”:
Refer to SDS, ST-33.
SST967A
19. Before installing boot, coat the contact surfaces between boot
and tie-rod with grease.
SST619C
Adjustment
NBST0031
Adjust pinion rotating torque as follows:
1.
Set rack to the neutral position without fluid in the gear.
2.
Coat the adjusting screw with locking sealant and screw it in.
3.
Lightly tighten lock nut.
4.
Tighten adjusting screw to a torque of 4.9 to 5.9 N·m (50 to 60
kg-cm, 43 to 52 in-lb).
5.
Loosen adjusting screw, then retighten it to 0.2 N·m (2 kg-cm,
1.7 in-lb).
POWER STEERING GEAR AND LINKAGE
Assembly (Cont’d)
ST-24
SST718CA
6.
Move rack over its entire stroke several times.
7.
Measure pinion rotating torque within the range of 180° from
neutral position.
Stop the gear at the point of maximum torque.
8.
Loosen adjusting screw, then retighten it to 4.9 to 5.9 N·m (50
to 60 kg-cm, 43 to 52 in-lb).
9.
Loosen adjusting screw by 10° to 20°.
SST940C
10. Prevent adjusting screw from turning, and tighten lock nut to
specified torque.
SST718CA
11. Measure pinion rotating torque.
Lock to lock:
Average rotating torque
0.78 - 1.47 N·m (8.0 - 15.0 kg-cm, 6.9 - 13.0 in-lb)
Within
±
100° from the neutral position:
Maximum torque variation
0.4 N·m (4 kg-cm, 3.5 in-lb)
Outside the above range:
Maximum force variation
0.6 N·m (6 kg-cm, 5.2 in-lb)
I
If pinion rotating torque is not within specifications, readjust it
starting from step 4. If pinion rotating torque is still out of
specifications
after
readjustment,
replace
steering
gear
assembly.
SST090B
12. Check rack sliding force on vehicle as follows:
a.
Install steering gear onto vehicle, but do not connect tie-rod to
knuckle arm.
b.
Connect all piping and fill with steering fluid.
c.
Start engine and bleed air completely.
d.
Disconnect steering column lower joint from the gear.
e.
Keep engine at idle and make sure steering fluid has reached
normal operating temperature.
f.
Pull tie-rod slowly to move it from neutral position to
±
11.5 mm
(
±
0.453 in) at speed of 3.5 mm (0.138 in)/s. Check that rack
sliding force is within specification.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
RS
BT
HA
SC
EL
IDX
POWER STEERING GEAR AND LINKAGE
Adjustment (Cont’d)
ST-25
Rack sliding force:
167 - 254 N (17.0 - 25.9 kg, 37 - 57 lb)
I
If rack sliding force is not within specification, readjust by
repeating adjustment procedure from the beginning.
I
If rack sliding force is still out of specification after
readjustment, gear assembly needs to be replaced.
POWER STEERING GEAR AND LINKAGE
Adjustment (Cont’d)
ST-26
Components
NBST0032
SST924C
1.
Pulley
2.
Front bracket
3.
Oil seal
4.
Suction pipe
5.
O-ring
6.
Casing
7.
Flow control valve spring
8.
Flow control A valve
9.
Dowel pin
10. Flow control B valve assembly
11. Side plate (Front)
12. Cam ring
13. Rotor
14. Vane
15. Snap ring
16. Side plate (Rear)
17. Side plate inner seal
18. Side plate outer seal
19. O-ring
20. Rear cover
21. Power steering pump bracket
22. Copper washer
SST925C
Pre-disassembly Inspection
NBST0033
Disassemble the power steering oil pump only if the following items
are found.
I
Oil leak from any point shown in the figure.
I
Deformed or damaged pulley.
I
Poor performance.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
RS
BT
HA
SC
EL
IDX
POWER STEERING OIL PUMP
Components
ST-27
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