Infiniti Q45. Manual — part 776
PREPARATION
RSU-3
C
D
F
G
H
I
J
K
L
M
A
B
RSU
PREPARATION
PFP:00002
Special Service Tools (SST)
NES0006H
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service Tools
NES0006I
Tool number
(Kent-Moore No.)
Tool name
Description
KV40106400
(
—
)
Socket wrench
Removing actuator plate fixing nut
(with active damper suspension)
ST3127S000
(See J
−
25765-A)
Preload gauge
1. GG91030000
Torque wrench (J
−
25765)
2. HT62940000 ( — )
Socket adapter (1/2
″
)
3. HT62900000 ( — )
Socket adapter (3/8
″
)
Measuring rotating torque of ball joint
ZZA1102D
NT124
Tool name
Description
Power tool
●
Removing wheel nuts
●
Removing brake caliper
●
Removing suspension component
parts
PBIC0190E
RSU-4
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
PFP:00003
NVH Troubleshooting Chart
NES0006J
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×
: Applicable
Reference page
—
—
—
NVH in
PR
s
e
c
ti
o
n
.
NVH i
n
RFD s
e
c
tio
n
.
NVH
in
RAX
a
n
d
RS
U
s
e
c
ti
o
n
s
.
NVH
in
W
T
s
e
c
ti
o
n
.
NVH
in
W
T
s
e
c
ti
o
n
.
NVH i
n
RAX s
e
c
tio
n
.
NVH in
BR
s
e
c
ti
o
n
.
NVH in
PS
s
e
c
ti
o
n
.
Possible cause and SUSPECTED PARTS
Im
pr
o
per
i
n
st
al
la
ti
on
,
lo
osen
ess
Sho
ck abs
or
b
e
r def
am
at
ion,
d
a
m
age or
d
e
fl
ec
ti
on
Bus
h
ing or
m
oun
ti
ng det
er
io
ra
ti
on
P
a
rt
s
in
te
rf
e
re
n
c
e
Spr
ing f
a
ti
gue
Sus
pens
io
n l
o
o
s
ene
ss
In
co
rr
ect
w
h
e
e
l al
ignm
en
t
S
ta
b
ili
z
er
bar
f
a
ti
g
u
e
PROPELL
E
R SHAF
T
DIFFERENTIAL
REAR AXLE AND
RE
AR
SUSPENSION
TIRES
ROAD
W
H
E
E
L
S
D
R
IV
E
SH
AF
T
BRAKES
STEERING
Symptom
REAR SUSPENSION
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
×
×
×
Judder
×
×
×
×
×
×
×
×
Poor quality ride or
handling
×
×
×
×
×
×
×
×
×
×
REAR SUSPENSION ASSEMBLY
RSU-5
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RSU
REAR SUSPENSION ASSEMBLY
PFP:55020
On-Vehicle Inspection and Service
NES0006K
Make sure the mounting conditions (looseness, back lash) of each of the component and component condi-
tions (wear, damage) are normal.
INSPECTION OF SUSPENSION ARM BALL JOINT END PLAY
Measure axial end play by installing and moving up/down between suspension arm and axle with an iron pry
bar or something similar.
CAUTION:
Be careful not to damage ball joint boot.
SHOCK ABSORBER INSPECTION
Check shock absorber for oil leakage, damage and replace if there are.
Wheel Alignment Inspection
NES000HN
DESCRIPTION
●
Measure wheel alignment under unladen conditions. “Unladen conditions” mean that fuel, engine coolant,
and lubricant are full. Spare tire, jack, hand tools and mats are in designated positions.
PRELIMINARY CHECK
●
Check tires for improper air pressure and wear.
●
Check road wheels for runout.
●
Check wheel bearing axial end play.
●
Check suspension arm ball joint axial end play.
●
Check shock absorber operation.
●
Check each mounting point of axle and suspension for looseness and deformation.
●
Check each link, arm and member for cracks, deformation, and other damage.
●
Check vehicle 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
Schedule.
Axial end play
: 0 mm (0 in)
RSU-6
REAR SUSPENSION ASSEMBLY
THE 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). Do NOT 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). DO NOT use this “Rolling Compensation”
method.
–
Use the “Jacking Compensation Method”. After installing the alignment targets or head units, raise the
vehicle and rotate the wheels 1/2 turn both ways.
–
See Instructions in the alignment machine you're using for more information on this.
CAMBER INSPECTION
●
Measure camber of both right and left wheels with a suitable
alignment gauge and adjust in accordance with the following
procedures.
If outside the standard value, adjust with adjusting bolt on front
lower link.
NOTE:
After adjusting camber, be sure to check toe-in.
TOE-IN
If toe-in is not within the specification, adjust with adjusting bolt in
rear lower link.
CAUTION:
Be sure to adjust equally on RH and LH side with adjusting bolt.
If toe-in is not still within the specification, inspect and replace any
damaged or worn rear suspension parts.
Camber
: Refer to
SRA096A
SEIA0071E
SEIA0072E
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