Nissan Xterra. Instruction — part 167
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< SYMPTOM DIAGNOSIS >
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
INFOID:0000000009483530
Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspec-
tion. If necessary, repair or replace these parts.
CLUTCH
Reference page
SUSPECTED PARTS (Possible cause)
CLUTCH P
E
DAL (Free play
o
ut
of
ad
ju
st
me
nt
)
CLUTCH LINE (A
ir in line)
MAS
T
ER CYLINDER PIS
T
ON CUP (Damaged)
OPERA
T
ING CYLINDER PIST
ON CUP (Damaged)
ENGINE MOU
NTING (Loose)
RELEA
SE BEA
RI
NG
(W
o
rn,
di
rty
or d
am
ag
ed
)
CLUTCH DISC (Out
of
true)
CLUTCH DISC (Runou
t i
s ex
ce
ssi
ve
)
CLUTCH DISC (Lining
broken)
CLUTCH DISC (Dirty or burned)
CLUTCH DISC (Oily)
CLUTCH DISC (W
orn
out)
CLUTCH DISC (Hardened)
CLUTCH DISC (Lack
of
sp
lin
e gre
ase)
DI
APHRAGM SPRI
N
G (Dam
ag
ed
)
DIAPHRAGM
SPRING (Ou
t of
ti
p a
lig
nm
en
t)
PRESSURE P
LA
T
E (Di
storti
on)
FL
YWHEE
L (Distortion)
Symptom
Clutch grabs/chatters
1
2
2
2
2
2
Clutch pedal spongy
1
2
2
Clutch noisy
1
Clutch slips
1
2
2
3
4
5
Clutch does not disengage
1
2
3
4
5
5
5
5
5
5
6
6
7
PRECAUTIONS
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< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009483531
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the
battery and wait at least three minutes before performing any service.
Service Notice or Precautions
INFOID:0000000009483532
• Always use recommended fluid. Refer to
MA-12, "Fluids and Lubricants"
.
• Do not reuse drained fluid.
• Be careful not to splash fluid on painted areas.
• When removing and installing clutch piping, use tool.
• Use new fluid to clean or wash all parts of master cylinder.
• Do not use mineral oils such as gasoline or kerosene. It will ruin
the rubber parts of the hydraulic system.
WARNING:
After cleaning clutch disc, wipe it with a dust collector. Do not
use compressed air.
SBR686C
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< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service Tool
INFOID:0000000009483533
The actual shape of the tools may differ from those illustrated here.
Commercial Service Tool
INFOID:0000000009483534
Tool number
(TechMate No.)
Tool name
Description
ST20050240
( — )
Diaphragm adjusting wrench
Adjusting unevenness of diaphragm spring of
clutch cover
ST20630000
(J-26366)
Clutch aligning bar
Installing clutch disc
a: 15.8 mm (0.622 in) dia.
b: 22.9 mm (0.902 in) dia.
ZZA0508D
ZZA1178D
Tool name
Description
Power tool
Loosening nuts, screws and bolts
1. Flare nut crowfoot
2. Torque wrench
Removing and installing clutch piping
a: 10 mm (0.39 in)
PIIB1407E
S-NT360
PREPARATION
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< PREPARATION >
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Bearing puller
Removing release bearing
Bearing drift
Installing release bearing
a: 52 mm (2.05 in) dia.
b: 45 mm (1.77 in) dia.
Tool name
Description
NT077
NT474
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