Nissan Pathfinder. Manual — part 643
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
FSU-3
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
INFOID:0000000009177364
Use chart below to find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable
Reference page
,
,
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"
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—
,
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"
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Possible cause and SUSPECTED PARTS
Im
prop
er in
st
a
lla
tion,
lo
os
en
es
s
Sh
oc
k ab
so
rbe
r de
fo
rma
tio
n,
da
ma
ge
or de
fle
ct
ion
Bu
sh
in
g o
r
m
o
un
ting
de
te
riora
tio
n
Part
s interference
S
p
ring
fa
tig
ue
Su
sp
en
si
on
lo
os
en
es
s
Inc
orre
ct
whe
el
al
ig
nm
en
t
S
ta
bi
liz
er ba
r
fa
tig
ue
PROPELLER SHAF
T (4WD)
DIFFERE
N
T
IAL (4W
D
)
FRONT AXLE
FRONT SUSPE
N
S
ION
R
O
AD
W
H
EE
L AN
D
T
IR
E
DRIVE SHA
F
T
BRAKE
STEERI
N
G
Symptom
FRONT SUSPENSION
Noise
×
×
×
×
×
×
×
×
×
×
×
×
×
×
Shake
×
×
×
×
×
×
×
×
×
×
×
×
Vibration
×
×
×
×
×
×
×
×
×
×
×
Shimmy
×
×
×
×
×
×
×
×
×
×
Shudder
×
×
×
×
×
×
×
×
Poor quality ride or
handling
×
×
×
×
×
×
×
×
×
×
FSU-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000009177365
The actual shapes of Kent-More tools may differ from those of special service tools illustrated here.
Commercial Service Tool
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Tool number
(Kent-More No.)
Tool name
Description
ST35652000
( — )
Strut attachment
Disassembling and assembling strut
—
(J-49286)
Drift and Pull gauge
Measuring drift and pull
—
(J-44372)
Pull gauge
Measuring ball joint swinging force
ZZA0807D
AWEIA0156ZZ
LST024
Tool name
Description
Spring compressor
Removing and installing coil spring
Power tool
Loosening nuts, screws and bolts
S-NT717
PIIB1407E
FRONT SUSPENSION ASSEMBLY
FSU-5
< PERIODIC MAINTENANCE >
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PERIODIC MAINTENANCE
FRONT SUSPENSION ASSEMBLY
Inspection and Adjustment
INFOID:0000000009177367
INSPECTION
Make sure the mounting conditions (looseness, back lash) of each component and component conditions
(wear, damage) are normal.
LOWER BALL JOINT END PLAY
1. Set front wheels in a straight-ahead position. Do not depress brake pedal.
2. Place an iron bar or similar tool between upper link and steering knuckle.
3. Measure axial end play by prying it up and down.Refer to
.
CAUTION:
Be careful not to damage ball joint boot. Do not damage the installation position by applying
excessive force.
SHOCK ABSORBER
Check for oil leakage, damage and replace if malfunction is detected.
WHEEL ALIGNMENT
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.
General Information and Recommendations
• A four-wheel thrust alignment should be performed.
- This type of alignment is recommended for any NISSAN 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 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.
Preliminary Check
Check the following:
1. Tires for improper air pressure and wear.
2. Road wheels for runout. Refer to
3. Wheel bearing axial end play. Refer to
.
4. Transverse link ball joint axial end play. Refer to
FSU-10, "Removal and Installation"
5. Shock absorber operation.
6. Each mounting part of axle and suspension for looseness and deformation.
7. Each of suspension member, shock absorber, upper link and transverse link for cracks, deformation and
other damage.
8. Vehicle height (posture).
Alignment Process
IMPORTANT:
Use only the alignment specifications listed in this Service Manual.
• When displaying the alignment settings, many alignment machines use "indicators" Do not use these indi-
cators.: (Green/red, plus or minus, Go/No Go).
- The alignment specifications programmed into your machine that operate these indicators may not be cor-
rect.
FSU-6
< PERIODIC MAINTENANCE >
FRONT SUSPENSION ASSEMBLY
- This may result in an ERROR.
• Most camera-type alignment machines are equipped with both "Rolling Compensation" method and optional
"Jacking Compensation" method to "compensate" the alignment targets or head units. "Rolling Compensa-
tion" is the preferred method.
- If using the "Rolling Compensation" method, after installing the alignment targets or head units, push or pull
on the rear wheel to move the vehicle. Do not push or pull the vehicle body.
- If using the "Jacking Compensation" method, after installing the alignment targets or head units, raise the
vehicle and rotate the wheels 1/2 turn both ways.
NOTE:
Do not use the "Rolling Compensation" method if you are using sensor-type alignment equipment.
- Follow all instructions for the alignment machine you're using for more information.
ADJUSTMENT
Camber, Caster and Kingpin Inclination Angles
CAUTION:
Camber, caster, kingpin inclination angles cannot be adjusted.
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