Infiniti QX56 (Z62). Manual — part 736
FSU-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tools
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The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tools
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Tool number
(Kent-Moore No.)
Tool name
Description
ST35652000
(
−
)
Shock absorber attachment
Disassembling and assembling shock
absorber
ST3127S000
(J-25765-A)
Preload gauge
Measuring rotating torque of ball joint
ZZA0807D
ZZA0806D
Tool name
Description
Power tool
Loosening bolts and nuts
Spring compressor
Removing and installing coil spring
PBIC0190E
S-NT717
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
FSU-5
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
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Use chart below to find the cause of the symptom. If necessary, repair or replace these parts.
×
: Applicable
Reference page
,
,
—
—
—
,
,
NVH in DLN section.
NVH in DLN section.
NVH in
F
AX an
d F
S
U
s
e
c
ti
o
ns
.
NVH in WT section.
NVH in WT section.
NVH in F
AX section.
NVH in B
R
section.
NVH in S
T
section.
Possible cause and SUSPECTED PARTS
Im
pro
pe
r in
st
al
lat
ion
,
lo
ose
n
ess
S
hoc
k
ab
so
rbe
r d
e
fo
rma
tio
n,
da
ma
ge
o
r de
fle
c
tion
B
u
s
h
in
g
or m
o
u
n
ting
d
e
te
rio
rati
o
n
P
a
rt
s interference
S
p
ri
ng
fat
ig
u
e
S
us
pe
ns
ion
lo
os
en
es
s
In
co
rrec
t wh
ee
l a
lig
nm
en
t
S
ta
b
iliz
er b
a
r f
a
ti
gu
e
PR
OP
EL
LE
R
S
H
A
F
T
DIFFERENTIAL (4WD)
F
R
ONT
AXLE AND FRONT S
U
SPENSION
TI
RE
ROAD
WHEEL
DRIV
E SHAFT
(4W
D
)
BR
AK
E
S
T
EERING
Symptom
FRONT SUSPENSION
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
×
×
×
Judder
×
×
×
×
×
×
×
×
Poor quality ride or
handling
×
×
×
×
×
×
×
×
×
×
FSU-6
< PERIODIC MAINTENANCE >
FRONT SUSPENSION ASSEMBLY
PERIODIC MAINTENANCE
FRONT SUSPENSION ASSEMBLY
Inspection
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MOUNTING INSPECTION
Check the mounting conditions (looseness, backlash) of each component and component conditions (wear,
damage) are normal.
BALL JOINT AXIAL END PLAY
1.
Set front wheels in a straight-ahead position.
2.
Measure axial end play by playing and moving up/down with iron bar or equivalent between lower link or
upper link and steering knuckle.
CAUTION:
• Never depress brake pedal when measuring.
• Never perform with tires on level ground.
• Be careful not to damage ball joint boot. Never damage the installation position by applying
excessive force.
Shock absorber
Check for oil leakage, damage. Replace it if necessary.
Axial end play
: Refer to
WHEEL ALIGNMENT
FSU-7
< PERIODIC MAINTENANCE >
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WHEEL ALIGNMENT
Inspection
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DESCRIPTION
Measure wheel alignment under unladen conditions.
NOTE:
“Unladen conditions” means that fuel, engine coolant, and lubricant are full. Spare tire, jack, hand tools and
mats are in designated positions.
PRELIMINARY CHECK
Check the following:
• Tires for improper air pressure and wear
• Road wheels for runout: Refer to
• Wheel bearing axial end play: Refer to
• Lower link and upper link ball joint axial end play: Refer to
• Shock absorber operation.
• Each mounting part of axle and suspension for looseness and deformation
• Lower link for cracks, deformation and other damage
• Vehicle height (posture)
GENERAL INFORMATION AND RECOMMENDATIONS
• A four-wheel thrust alignment should be performed.
- This type of alignment is recommended for any NISSAN/INFINITI vehicle.
- The four-wheel “thrust” process helps ensure that the vehicle is properly aligned and the steering wheel is
centered.
- The alignment rack itself should be capable of accepting any NISSAN/INFINITI vehicle.
- The rack should be checked to ensure that it is level.
• Make sure the machine is properly calibrated.
- Your alignment equipment should be regularly calibrated in order to give correct information.
- Check with the manufacturer of your specific equipment for their recommended Service/Calibration Sched-
ule.
ALIGNMENT PROCESS
IMPORTANT:
Use only the alignment specifications listed in this Service Manual.
• When displaying the alignment settings, many alignment machines use “indicators”: (Green/red, plus or
minus, Go/No Go). Never use these indicators.
- The alignment specifications programmed into your machine that operate these indicators may not be cor-
rect.
- This may result in an ERROR.
• Some newer alignment machines are equipped with an optional “Rolling Compensation” method to “com-
pensate” the sensors (alignment targets or head units). Never use this “Rolling Compensation” method.
- Use the “Jacking Compensation Method”. After installing the alignment targets or head units, raise the vehi-
cle and rotate the wheels 1/2 turn both ways.
- See Instructions in the alignment machine you're using for more information on this.
Adjustment
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CAMBER, CASTER
1.
Adjust with the front/rear side adjusting bolts (1) on the lower link
(2).
2.
See the following table for the amount of cam bolt scale move-
ment and the variation of camber and caster.
CAUTION:
Align the adjusting bolt cutout with the stamp of lower link
bracket.
: Vehicle front
JPEIA0235ZZ
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