2002 NISSAN XTERRA service

Spark plug tightening torque:
14 to 22 ft-lb (20 to 29 Nzm)
4. Reconnect the spark plug cables to their
original positions.
REPLACING SPARK PLUGS (with
supercharger)
Please see your authorized NISSAN dealer
for assistance.
The filter element should not be cleaned
and reused as it is given a special treat-
ment. We recommend it be replaced ac-
cording to the maintenance intervals shown
in the ``NISSAN Service and Maintenance
Guide.'' When replacing the filter, wipe the
inside of the air cleaner housing and the
cover with a damp cloth.
WARNING
OOperating the engine with the air
cleaner removed can cause you or
others to be burned. The air cleaner
not only cleans the air, it stops flame
if the engine backfires. If it isn't there
and the engine backfires, you could
be burned. Do not drive with the air
cleaner removed, and be careful
when working on the engine with the
air cleaner removed.
ADI1079WDI0097
AIR CLEANER
Maintenance and do-it-yourself8-23
ZX

Self-adjusting brakes
Your vehicle is equipped with self-adjusting
brakes.
The front disc-type brakes self-adjust every
time the brake pedal is applied. The rear
drum-type brakes on two-wheel drive trucks
self-adjust every time the parking brake is
applied. The rear drum-type brakes on four-
wheel drive trucks self-adjust every time the
brake pedal is applied. If the brake pedal
goes down farther than normal, it may be
due to a lack of adjustment of the rear drum
brakes. Apply the parking brake several
times.
WARNING
If the brake pedal height does not re-
turn to normal, see an authorized NIS-
SAN dealer and have it checked.
Brake pad wear indicators
The disc brake pads on your vehicle have
audible wear indicators. When a brake pad
requires replacement, it will make a high
pitched scraping or screeching sound when
the vehicle is in motion whether or not the
brake pedal is depressed. Have the brakeschecked as soon as possible if the wear
indicator sound is heard.
Under some driving or climate conditions,
occasional brake squeak, squeal or other
noise may be heard. Occasional brake
noise during light to moderate stops is nor-
mal and does not affect the function or
performance of the brake system.
The rear drum brakes (if so equipped) do
not have audible wear indicators. Should
you ever hear an unusually loud noise from
the rear drum brakes, have them inspected
as soon as possible by an authorized NIS-
SAN dealer.
Proper brake inspection intervals should
be followed.For more information regard-
ing brake inspections, see the appropriate
maintenance schedule information in the
``NISSAN Service and Maintenance Guide.''
BRAKE BOOSTER
Check the brake booster function with the
following steps:
1. With the engine off, press and release
the brake pedal several times. When
brake pedal movement (distance of
travel) remains the same from one pedalapplication to the next, continue on to
next step.
2. While depressing the brake pedal, start
the engine. The pedal height should drop
a little.
3. With the brake pedal depressed, stop the
engine. Keeping the pedal depressed for
about 30 seconds, the pedal height
should not change.
4. Run the engine for one minute without
depressing the brake pedal, then turn it
off. Depress the brake pedal several
times. The pedal travel distance will de-
crease gradually with each depression
as the vacuum is released from the
booster.
If the brakes do not operate properly, have
the brakes checked by an authorized
NISSAN dealer.
8-28Maintenance and do-it-yourself
ZX

1. Unclip the two metal clips on the side of
the fog light.
2. Pull out and support the fog light assem-
bly.
3. Disconnect the fog light bulb connector.
4. Lift the spring retainer.
5. Remove the fog light bulb.
OThe fog light bulb can not be separated
from the wire and is serviced as an
assembly.
6. Install the new bulb in the reverse order
of removal. DO NOT TOUCH THE BULB.EXTERIOR AND INTERIOR LIGHTS
Item Wattage (W) Bulb No.*1
Headlight 65/55 9007
Turn signal light 28/8 3457AK
*2
Parking light 5 168*2
Side Marker 5 168
Rear combination light:
Turn signal 27 3157Ak
Stop/Tail 27/7 3057k
Back-up 16 921
License plate light 3.8 168
Fog light 55 H3
Dome light 8 82
Map light without compass 8 82
Map light with compass 3.8 168
High-mounted stop light 12.8 912
*1: Always check with the Parts Department at an authorized NISSAN dealer for the latest parts
information.
*2The bulb is not serviceable in-vehicle. See an authorize NISSAN dealer for assistance.
8-34Maintenance and do-it-yourself
ZX

Tire wear and damage
WARNING
OTires should be periodically in-
spected for wear, cracking, bulging
or objects caught in the tread. If
excessive wear, cracks, bulging or
deep cuts are found, the tire(s)
should be replaced.
OThe original tires have a built-in
tread wear indicator. When the wear
indicators are visible, the tire(s)
should be replaced.OImproper service of the spare tire
may result in serious personal in-
jury. If it is necessary to repair the
spare tire, contact an authorized
NISSAN dealer.
OFor additional information regarding
tires, refer to ``Important Tire Safety
Information'' in the Warranty Infor-
mation Booklet (US) or ``Tire Safety
Information'' in the Warranty and
Roadside Assistance information
booklet (Canada).
Replacing tires and wheels
When replacing a tire, use the same size,
tread design, speed rating and load carrying
capacity as originally equipped. Recom-
mended types and sizes are shown in
``Wheel/tire size'' in the ``Technical and con-
sumer information'' section of this manual.
WARNING
O
The use of tires other than those
recommended or the mixed use of
tires of different brands, construction
(bias, bias-belted or radial), or tread
patterns can adversely affect the ride,braking, handling, ground clearance,
body-to-tire clearance, tire chain clear-
ance, speedometer calibration, head-
light aim and bumper height. Some of
these effects may lead to accidents and
could result in serious personal injury.
OIf the wheels are changed for any
reason, always replace with wheels
which have the same offset dimen-
sion. Wheels of a different offset
could cause premature tire wear, de-
grade vehicle handling characteris-
tics and/or interference with the
brake discs/drums. Such interfer-
ence can lead to decreased braking
efficiency and/or early brake
pad/shoe wear. Refer to ªWheel/tire
sizeº in the ªTechnical and con-
sumer informationº section of this
manual for wheel off-set dimen-
sions.
ODo not install a deformed wheel or
tire even if it has been repaired. Such
wheels or tires could have unknown
structural damage and could fail
without warning.
MDI0004
8-40Maintenance and do-it-yourself
ZX

OThe use of retread tires is not recom-
mended.
OFor additional information regarding
tires, refer to ``Important Tire Safety
Information'' in the Warranty Infor-
mation Booklet (US) or ``Tire Safety
Information'' in the Warranty and
Roadside Assistance information
booklet (Canada).Four-wheel drive models
CAUTION
Always use tires of the same type, size,
brand, construction (bias, bias-belted
or radial), and tread pattern on all four
wheels. Failure to do so may result in a
circumference difference between tires
on the front and rear axles which will
cause excessive tire wear and may
damage the transmission, transfer
case and differential gears.
If excessive tire wear is found, it is recom-
mended that all four tires be replaced with
tires of the same size, brand, construction
and tread pattern. The tire pressure and
wheel alignment should also be checked
and corrected as necessary. Contact an
authorized NISSAN dealer.
Wheel balance
Unbalanced wheels may affect vehicle han-
dling and tire life. Even with regular use,
wheels can get out of balance. Therefore,
they should be balanced as required.
Wheel balance service should be performed
with the wheels off the vehicle. Spin balanc-ing the front wheels on the vehicle could
lead to transmission damage.
OFor additional information regarding tires,
refer to ``Important Tire Safety Informa-
tion'' in the Warranty Information Booklet
(US) or ``Tire Safety Information'' in the
Warranty and Roadside Assistance infor-
mation booklet (Canada).
Care of wheels
OWash the wheels when washing the ve-
hicle to maintain their appearance.
OClean the inner side of the wheels when
the wheel is changed or the underside of
the vehicle is washed.
ODo not use abrasive cleaners when
washing the wheels.
OInspect wheel rims regularly for dents or
corrosion. This may cause loss of pres-
sure or damage the tire bead.
ONISSAN recommends waxing the road
wheels to protect against road salt in
areas where it is used during winter.
Maintenance and do-it-yourself
8-41
ZX

9 Technical and consumer information
Capacities and recommended fuel/lubricants ........9-2
Fuel recommendation
(except supercharger) .......................................9-4
Engine oil and oil filter recommendation ...........9-6
Recommended SAE viscosity number ..............9-7
Air conditioner system refrigerant and
lubricant recommendations ...............................9-8
Specifications .........................................................9-9
Engine ...............................................................9-9
Wheels and tires..............................................9-10
Dimensions and weights ................................. 9-11
When traveling or registering your vehicle in
another country ....................................................9-12
Vehicle identification .............................................9-12
Vehicle identification number (VIN) plate ........9-12
Vehicle identification number
(chassis number) .............................................9-12
Engine serial number ......................................9-13
F.M.V.S.S. certification label ............................9-13
Emission control information label ..................9-14
Tire placard......................................................9-14
Air conditioner specification label ....................9-14Installing front license plate..................................9-15
Vehicle loading information ..................................9-15
Terms ...............................................................9-15
Determining vehicle payload capacity .............9-16
Securing the load ............................................9-16
Loading tips .....................................................9-17
Payload weight capacity ..................................9-18
Measurement of weights .................................9-19
Towing a trailer .....................................................9-19
Maximum load limits ........................................9-19
Towing load/specification chart .......................9-21
Towing safety ...................................................9-22
Trailer tow harness and module
(if so equipped)................................................9-23
Uniform tire quality grading ..................................9-25
Emission control system warranty .......................9-26
Reporting safety defects (US only) ......................9-27
Readiness for inspection/maintenance (I/M)
test (US only) .......................................................9-27
Owner manual/service manual order
information ............................................................9-29
In the event of a collision ................................9-30
ZX

FUEL RECOMMENDATION
(except supercharger)
Your vehicle is designed to operate on
unleaded gasoline with an octane rating
of at least 87 AKI (Anti-Knock Index)
(Research octane number 91).
(Supercharger)
Use unleaded premium gasoline with an
octane rating of at least 91 AKI (Anti-Knock
Index) number (Research octane number
96).
If unleaded premium gasoline is not
available, unleaded regular gasoline with
an octane rating of at least 87 AKI (Re-
search octane number 91) can be used,
but only under the following precau-
tions:
OHave the fuel tank filled only partially with
unleaded regular gasoline, and fill up
with unleaded premium as soon as pos-
sible.
OAvoid full throttle driving and abrupt ac-
celeration.
CAUTION
OUsing a fuel other than that specified
could adversely affect the emission
control system, and may also affect
the warranty coverage.
OUnder no circumstances should a
leaded gasoline be used, since this
will damage the three-way catalyst.
Reformulated Gasoline
Some fuel suppliers are now producing re-
formulated gasolines. These gasolines are
specially designed to reduce vehicle emis-
sions. NISSAN supports efforts towards
cleaner air and suggests that you use refor-
mulated gasoline when available.
Gasoline containing oxygenates
Some fuel suppliers sell gasoline containing
oxygenates such as ethanol, MTBE and
methanol with or without advertising their
presence. Nissan does not recommend the
use of fuels of which the oxygenate content
and the fuel compatibility for your NISSAN
cannot be readily determined. If in doubt,
ask your service station manager.If you use oxygenate-blend gasoline, please
take the following precautions as the usage
of such fuels may cause vehicle perfor-
mance problems and/or fuel system dam-
age.
OThe fuel should be unleaded and have
an octane rating no lower than that
recommended for unleaded gasoline.
OIf an oxygenate-blend, excepting a
methanol blend, is used, it should
contain no more than 10% oxygenate.
(MTBE may, however, be added up to
15%.)
O
If a methanol blend is used, it should
contain no more than 5% methanol
(methyl alcohol, wood alcohol). It
should also contain a suitable amount
of appropriate cosolvents and corro-
sion inhibitors. If not properly formu-
lated with appropriate cosolvents and
corrosion inhibitors, such methanol
blends may cause fuel system damage
and/or vehicle performance problems.
At this time, sufficient data is not avail-
able to ensure that all methanol blends
are suitable for use in NISSAN ve-
hicles.
9-4Technical and consumer information
ZX

O80W-90 for the differential and 75W-90
for the transfer case are preferable for
ambient temperatures below 104ÉF
(40ÉC).
AIR CONDITIONER SYSTEM
REFRIGERANT AND LUBRICANT
RECOMMENDATIONS
The air conditioner system in this NIS-
SAN vehicle must be charged with the
refrigerant HFC-134a (R-134a) and the
lubricant, NISSAN A/C system lubricant
Type R or the exact equivalents.
CAUTION
The use of any other refrigerant or
lubricant will cause severe damage to
the air conditioning system and will
require the replacement of all air con-
ditioner system components.
The refrigerant HFC-134a (R-134a) in your
NISSAN vehicle does not harm the earth's
ozone layer. Although this refrigerant does
not affect the earth's atmosphere, certain
government regulations require the recov-
ery and recycling of any refrigerant during
automotive air conditioner system service.
An authorized NISSAN dealer has the
trained technicians and equipment needed
to recover and recycle your air conditioner
system refrigerant.Contact an authorized NISSAN dealer when
servicing your air conditioner system.
ATI0510
9-8Technical and consumer information
ZX