Infiniti I35 (A33). Manual — part 601
Tool name
Description
Spring compressor
NT717
Removing and installing coil spring
GI
MA
EM
LC
EC
FE
AT
AX
BR
ST
RS
BT
HA
SC
EL
IDX
FRONT SUSPENSION
Preparation (Cont’d)
SU-3
Noise, Vibration and Harshness (NVH)
Troubleshooting
=NHSU0004
NVH TROUBLESHOOTING CHART
NHSU0004S01
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
Reference page
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AX-3
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BR-6
Possible Cause and
SUSPECTED
PARTS
Improper
installation,
looseness
Shock
absorber
deformation,
damage
or
deflection
Bushing
or
mounting
deterioration
Parts
interference
Spring
fatigue
Suspension
looseness
Incorrect
wheel
alignment
Stabilizer
bar
fatigue
Out-of-round
Imbalance
Incorrect
air
pressure
Uneven
tire
wear
Deformation
or
damage
Non-uniformity
Incorrect
tire
size
DRIVE
SHAFT
AXLE
SUSPENSION
TIRES
ROAD
WHEEL
BRAKES
STEERING
Symptom
SUSPENSION
Noise
×
×
×
×
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
×
×
×
Judder
×
×
×
×
×
×
×
×
Poor quality
ride or han-
dling
×
×
×
×
×
×
×
×
×
×
TIRES
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
×
×
×
×
×
×
Judder
×
×
×
×
×
×
×
×
×
×
×
×
Poor quality
ride or han-
dling
×
×
×
×
×
×
×
×
×
×
ROAD
WHEEL
Noise
×
×
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
×
×
Shimmy,
Judder
×
×
×
×
×
×
×
×
×
Poor quality
ride or han-
dling
×
×
×
×
×
×
×
×
: Applicable
FRONT SUSPENSION
Noise, Vibration and Harshness (NVH) Troubleshooting
SU-4
Components
NHSU0005
SSU042
1.
Front suspension member
2.
Stabilizer bar
3.
Transverse link
4.
Rebound stopper
5.
Knuckle
6.
Strut assembly
7.
Coil spring
GI
MA
EM
LC
EC
FE
AT
AX
BR
ST
RS
BT
HA
SC
EL
IDX
FRONT SUSPENSION
Components
SU-5
SMA525A
On-vehicle Service
FRONT SUSPENSION PARTS
NHSU0006
Check front axle and front suspension parts for excessive play,
cracks, wear or other damage.
I
Shake each front wheel to check for excessive play.
I
Make sure that cotter pin is inserted.
I
Retighten all axle and suspension nuts and bolts to the speci-
fied torque.
Tightening torque:
Refer to “FRONT SUSPENSION”, SU-5.
SFA392B
I
Check strut (shock absorber) for oil leakage or other damage.
I
Check suspension ball joint for grease leakage and ball joint
dust cover for cracks or other damage.
If ball joint dust cover is cracked or damaged, replace trans-
verse link.
SFA818AA
I
Check spring height from top of wheelarch to the ground.
a)
Vehicle must be unladen*, parked on a level surface, and tires
checked for proper inflation and wear (tread wear indicator
must not be showing).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
b)
Bounce vehicle up and down several times before measuring.
Standard height: Refer to SDS (SU-16).
c)
Spring height is not adjustable. If out of specification, check for
worn springs or suspension parts.
SSU010
I
Check suspension ball joint end play.
a)
Jack up front of vehicle and set the stands.
b)
Clamp dial indicator onto transverse link and place indicator tip
on lower edge of brake caliper.
c)
Make sure front wheels are straight and brake pedal is
depressed.
d)
Place a pry bar between transverse link and inner rim of road
wheel.
e)
While raising and releasing pry bar, observe maximum dial
indicator value.
Vertical end play: 0 mm (0 in)
f)
If ball joint movement is beyond specifications, remove and
replace it.
FRONT WHEEL ALIGNMENT
NHSU0007
Before checking front wheel alignment, be sure to make a prelimi-
nary inspection (Unladen*).
*: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand
tools and mats in designated positions.
FRONT SUSPENSION
On-vehicle Service
SU-6
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