Infiniti QX4 (R50). Manual — part 547
Tool number
(Kent-Moore No.)
Tool name
Description
ST3127S000
(See J25765-A)
1 GG91030000
(J25765-A)
Torque wrench
2 HT62940000
(
—
)
Socket adapter
3 HT62900000
(
—
)
Socket adapter
NT541
Measuring turning torque
KV48104400
(
—
)
Rack seal ring reformer
NT550
Reforming teflon ring
a: 50 mm (1.97 in) dia.
b: 36 mm (1.42 in) dia.
c: 100 mm (3.94 in)
KV48103400
(
—
)
Torque adapter
NT236
Measuring steering transfer gear rotating
torque
KV48104200
(
—
)
Rear cover wrench
NT540
Removing and installing gear housing end
cover
a: 4 mm (0.16 in) dia.
b: 5 mm (0.20 in)
c: 3 mm (0.12 in) dia.
d: 5 mm (0.20 in)
(J43995)
Steering lock nut wrench
NT838
Adjusting steering pinion rotating torque
(J43996)
Steering rack adjustment
wrench
NT839
Adjusting steering pinion rotating torque
(J-44372)
Spring gauge
LST024
Measuring steering wheel turning force
PREPARATION
Special Service Tools (Cont’d)
ST-4
Tool number
(Kent-Moore No.)
Tool name
Description
(J-44183-A)
Spring gauge
LST025
Measuring rack sliding force
Commercial Service Tools
NBST0004
Tool name
Description
Rear oil seal drift
NT063
Installing rear oil seal
a: 28 mm (1.10 in) dia.
Pinion oil seal drift
NT063
Installing pinion oil seal
a: 40 mm (1.57 in) dia.
Oil pump attachment
NT179
Disassembling and assembling oil pump
Unit: mm (in)
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
RS
BT
HA
SC
EL
IDX
PREPARATION
Special Service Tools (Cont’d)
ST-5
NBST0043
NVH
T
roubleshooting
Chart
NBST0043S01
Use
the
chart
below
to
help
you
find
the
cause
of
the
symptom.
If
necessary
,
repair
or
replace
these
parts.
Reference
page
—
Possible
cause
and
SUSPECTED
P
A
R
T
S
Fluid level
Air in hydraulic system
Tie-rod ball joint swinging force
Tie-rod ball joint rotating torque
Tie-rod ball joint end play
Steering gear fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness or tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
DIFFERENTIAL
DRIVE SHAFT
AXLE
SUSPENSION
TIRES
ROAD WHEEL
BRAKES
Symp-
tom
STEERING
Noise
×××××××××
××××××××
Shake
×××
×
××××××
V
ibration
×××××
×
××××
Shimmy
×××
×
×××××
Judder
×
×
×××××
×
:
Applicable
NOISE,
V
IBRATION
AND
HARSHNESS
(NVH)
T
ROUBLESHOOTING
NVH
T
roubleshooting
Chart
ST-6
SST489B
Checking Steering Wheel Play
NBST0005
1.
With wheels in a straight-ahead position, check steering wheel
play.
Steering wheel play:
35 mm (1.38 in) or less
2.
If it is not within specification, check the following for loose or
worn components.
Steering gear assembly
Steering column
Front suspension and axle
SST490BA
Checking Neutral Position on Steering Wheel
NBST0006
PRE-CHECKING
NBST0006S01
I
Make sure that wheel alignment is correct.
Wheel alignment:
Refer to SU-13, “Wheel Alignment”.
I
Verify that the steering gear is centered before removing the
steering wheel.
CHECKING
NBST0006S02
1.
Check that the steering wheel is in the neutral position when
driving straight ahead.
2.
If it is not in the neutral position, remove the steering wheel and
reinstall it correctly.
3.
If the neutral position is between two teeth, loosen tie-rod lock
nuts. Turn the tie-rods by the same amount in opposite direc-
tions on both left and right sides.
SMA127
Front Wheel Turning Angle
NBST0007
1.
Rotate steering wheel all the way right and left; measure turn-
ing angle.
Turning angle of full turns:
Refer to SU-13, “Wheel Alignment”.
SST651C
2.
If it is not within specification, check rack stroke.
Rack stroke “S”:
Refer to SDS (ST-33).
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
RS
BT
HA
SC
EL
IDX
ON-VEHICLE SERVICE
Checking Steering Wheel Play
ST-7
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