2001 NISSAN FRONTIER differential

cAccelerating quickly from a stop af-
ter shifting from two-wheel drive to
four-wheel drive may not allow en-
gagement of the auto-locking free-
running hubs and may cause a clat-
tering noise. Continued use of the
vehicle with this noise may damage
the hub lock. In such a case, release
the accelerator pedal to reduce the
engine speed or stop the vehicle.
cIf the auto-locking hubs make a clat-
tering noise after shifting from four-
wheel drive to two-wheel drive, stop
and move the vehicle in reverse
gear, in a straight line, about 7 to 10
feet (2 to 3 m).
cUnder extremely cold conditions
[below 5ÉF (-15ÉC)], the front axle
shafts may rotate even with the
transfer lever in the 2H position. If
this occurs, the auto-locking hubs
may make a clattering noise. To
avoid this, drive first in four-wheel
drive to warm up the vehicle and
differential gear oil. Then, shift to
two-wheel drive.cIn cold weather, it may be necessary
to reduce speed or stop the vehicle
in order to shift from two-wheel drive
to four-wheel drive.
cWhen shifting into or out of four-
wheel drive while driving, do not
stop shift lever movement midway.
An incomplete shift may cause a
clattering noise from the auto-
locking hubs. Continued use of the
vehicle with this noise may damage
the hub lock. Drive in four-wheel
drive to stop the noise. Shift to two-
wheel drive as described.
5-22Starting and driving
ZX

Removing wheel cover
CAUTION
Do not use your hands to pry off wheel
caps or wheel covers. Doing so could
result in personal injury.
Use caution not to scratch the wheel cover
or wheel surface.
Jacking up the vehicle and remov-
ing the wheel
Always refer to the proper illustrations for
the correct placement and jack-up points for
your specific vehicle model and jack type.
WARNING
cNever get under the vehicle while it
is supported only by the jack.
cUse only the jack provided with your
vehicle to lift the vehicle. Do not use
the jack provided with your vehicle
on other vehicles. The jack is de-
signed for lifting only your vehicle
during a tire change.
cUse the correct jack up points; Never
use any other part of the vehicle for
jack support.
cNever jack up the vehicle more than
necessary.
cNever use blocks on or under the
jack.
cDo not allow passengers to stay in
the vehicle while it is on the jack.
cDo not start or run the engine while
vehicle is on the jack. It may cause
the vehicle to move. This is espe-
cially true for vehicles with limited
slip differential carriers.
ACE1011WCE0014
In case of emergency6-5
ZX

cImproper 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.
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
c
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
clearance, speedometer calibration,
headlight aim and bumper height.
Some of these effects may lead to
accidents and could result in serious
personal injury.cIf 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 pre-mature tire wear, de-
grade vehicle handling characteris-
tics and/or interference with the
brake discs/drums. Such interference
can lead to decreased braking effi-
ciency and/or early brake pad/shoe
wear. Refer to(Wheel/tire size(in the
(Technical and consumer informa-
tion(section of this manual for wheel
off-set dimensions.
cDo 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.
cThe use of retread tires is not recom-
mended.
Four-wheel drive models
CAUTION
Always use tires of the same 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.
Do-it-yourself
8-39
ZX

Care of wheels
cWash the wheels when washing the ve-
hicle to maintain their appearance.
cClean the inner side of the wheels when
the wheel is changed or the underside of
the vehicle is washed.
cDo not use abrasive cleaners when
washing the wheels.
cInspect wheel rims regularly for dents or
corrosion. This may cause loss of pres-
sure or damage the tire bead.
cNISSAN recommends waxing the road
wheels to protect against road salt in
areas where it is used during winter.
Spare tire (TEMPORARY USE
ONLY)
Your vehicle may be equipped with a TEM-
PORARY USE ONLY spare tire.
To avoid property damage or personal injury
when using the TEMPORARY USE ONLY
spare tire, observe the following cautions:
WARNING
cThe spare tire should be used for
emergency use only. It should be
replaced with the standard tire at the
first opportunity to avoid possible
tire or differential damage.
cDrive carefully while the TEMPO-
RARY USE ONLY spare tire is in-
stalled. Avoid sharp turns and
abrupt braking while driving.
cPeriodically check spare tire infla-
tion pressure. Always keep the pres-
sure of the TEMPORARY USE ONLY
spare tire at 60 psi (420 kPa, 4.2 bar).
Always keep the pressure of the full
size spare tire (if so equipped) at the
recommended pressure for standard
tires, as indicated on the tire placard.
For tire placard location, see(Tire
placard(in the index of this manual .
cWith the TEMPORARY USE ONLY
spare tire installed do not drive the
vehicle at speeds faster than 50 MPH
(80 km/h).
c
When driving on roads covered with
snow or ice, the TEMPORARY USE
ONLY spare tire should be used onthe front wheels and the original tire
used on the rear wheels (drive
wheels). Use tire chains only on the
two rear original tires.
cTire tread of the TEMPORARY USE
ONLY spare tire will wear at a faster
rate than the standard tire. Replace
the spare tire as soon as the tread
wear indicators appear.
cDo not use the spare tire on other
vehicles.
cDo not use more than one spare tire
at the same time.
cDo not tow a trailer when the TEM-
PORARY USE ONLY spare tire is
installed.
CAUTION
c
With the spare tire installed the
transfer control lever must be in the
2H position to prevent the transfer
case and differential gears from be-
ing damaged.
cDo not use tire chains on a TEMPO-
RARY USE ONLY spare tire. Tire
8-40Do-it-yourself
ZX

Schedule 1
Abbreviations: R = Replace I = Inspect. Correct or replace if necessary. L = Lubricate [ ]: At the mileage intervals only
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform at number of miles, kilometers
or months, whichever comes first.Miles ý 1,000 3.75 7.5 11.25 15 18.75 22.5 26.25 30 33.75 37.5 41.25 45 48.75 52.5 56.25 60
(km ý 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54) (60) (66) (72) (78) (84) (90) (96)
Months 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
Chassis and body maintenance
Brake lines & cablesIIII
Brake pads, rotors, drums & liningsIIIIIIII
Automatic transmission, transfer & differ-
ential gear oil (exc. LSD)See NOTE (1)IIII
Limited-slip differential (LSD) gear oil See NOTE (1)IRIR
Manual transmission oil See NOTE (1) I I I [R]
Steering gear (box) & linkage, axle & suspension partsIIIIIIII
Tire rotation See NOTE (4)
Drive shaft boots (
) IIIIIIII
Propeller shaft (
) LLLLLLLL
Front wheel bearing grease (4x2)II
Front wheel bearing grease & free-running
hub grease (
)See NOTE (2)IRIR
Exhaust systemIIIIIIII
Supplemental air bag system See NOTE (3)
NOTE: (1) If towing a trailer, using a camper or a car-top carrier, or driving on rough or muddy roads, change (not just inspect) oil at every 30,000
miles (48,000 km) or 24 months except for LSD. Change LSD gear oil every 15,000 miles (24,000 km) or 12 months.
(2) If operating frequently in water, replace grease every 3,750 miles (6,000 km) or 3 months.
(3) Inspect the supplemental air bag system 10 years after the date of manufacture noted on the FMVSS certification label.
(4) Refer to(Tire rotation(under the(General maintenance(heading earlier in this section.
Maintenance9-7
ZX

Schedule 2
Abbreviations: R = Replace I = Inspect. Correct or replace if necessary. L = Lubricate [ ]: At the mileage intervals only
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Perform at number of miles, kilometers or
months, whichever comes first.Miles ý 1,000 7.5 15 22.5 30 37.5 45 52.5 60
(km ý 1,000) (12) (24) (36) (48) (60) (72) (84) (96)
Months 6 12 18 24 30 36 42 48
Chassis and body maintenance
Brake lines & cablesIIII
Brake pads, rotors, drums & liningsIIII
Automatic transmission, transfer & differential gear oil (exc. LSD)IIII
Manual transmission oil I I I [R]
Limited-slip differential (LSD) gear oil I R I R
Steering gear (box) & linkage, axle & suspension parts I I
Tire rotation See NOTE (2)
Drive shaft boots (
) IIII
Propeller shaft (
) LLLL
Front wheel bearing grease (4x2) I I
Front wheel bearing grease & free-running hub grease (
)I R I R
Exhaust systemII
Supplemental air bag system See NOTE (1)
NOTE: (1) Inspect the supplemental air bag system 10 years after the date of manufacture noted on the FMVSS certification label.
(2) Refer to(Tire rotation(under the(General maintenance(heading earlier in this section.
Maintenance9-9
ZX

Maintenance for off-road driving
(
only)
Whenever you drive off-road through sand,
mud or water as deep as the wheel hub,
more frequent maintenance may be re-
quired of the following items:
¶Brake pads and rotors
¶Brake linings and drums
¶Brake lines and hoses
¶Wheel bearing grease and free-running
hub grease
¶Differential, transmission and transfer oil
¶Steering linkage
¶Propeller shafts and front drive shafts
¶Air cleaner filter
These items should be checked frequently
to assure safe and proper operation of your
vehicle.
EXPLANATION OF
MAINTENANCE ITEMS
Additional information on the following
items with an ``*'' is found in the ``Do-it-
yourself'' section of this manual.
Emission control system
maintenance
Drive belts*Check drive belts for wear,
fraying or cracking and also for proper ten-
sion. Replace any damaged drive belts.
Air cleaner filterUnder normal driving con-
ditions, the air cleaner filter should be re-
placed in accordance with the maintenance
schedule. However, driving the vehicle in
dusty areas may cause rapid clogging of the
element. Consequently, the element may
have to be replaced more frequently.
Positive crankcase ventilation (PCV) fil-
terUnder normal driving conditions, the
filter should be replaced in accordance with
the maintenance schedule. If the vehicle is
operated under extremely adverse weather
conditions or in areas where ambient tem-
peratures are either extremely low or ex-
tremely high, the filter may become cloggedmore rapidly. In such an event, replace the
filter immediately.
EVAP Vapor linesCheck vapor lines and
connections for leaks, looseness, or dete-
rioration. If leaks are found, replace the
lines.
Fuel linesCheck the fuel hoses, piping and
connections for leaks, looseness or deterio-
ration. Replace any damaged parts.
Fuel filterIf the vehicle is operated under
extremely adverse weather conditions or in
areas where ambient temperatures are ei-
ther extremely low or extremely high, the
filter might become clogged. In such an
event, replace the filter immediately.
Engine coolant*Flush and refill the cooling
system.
Engine oil and oil filter*Under normal
driving conditions, the engine oil and oil filter
should be replaced in accordance with the
maintenance schedule. However, under se-
vere driving conditions, they may have to be
replaced more frequently.
Spark plugs*Replace with new plugs hav-
ing the correct heat range.
9-10Maintenance
ZX

Chassis and body maintenance
Brake lines and cablesCheck the brake
lines and hoses (including brake booster
vacuum hoses, connections & check valve)
and parking brake cables for proper attach-
ment, leaks, cracks, chafing, abrasion, de-
terioration, etc.
Brake pads, rotors, drums and linings
Check these and the other brake compo-
nents for wear, deterioration and leaks. Un-
der severe driving conditions, they may have
to be inspected more frequently.
Manual and automatic transmission,
transfer and differential gear oilVisually
inspect for signs of leakage and replace oil
for limited-slip differential. Under severe
driving conditions, the oil should be re-
placed at the specified interval.
Steering gear and linkage, axle and sus-
pension parts and drive shaft boots
Check for damage, looseness and leakage
of oil or grease. Under severe driving con-
ditions, they may have to be inspected more
frequently.Propeller shaft(s)Check the propeller
shaft(s) for damage, looseness and grease
leakage under severe driving conditions
(
only).
Front wheel bearing grease and free-
running hub greaseCheck the wheel
bearing for grease leakage around grease
seals, axial end play and smooth turning.
Repack these in accordance with the main-
tenance schedule (4x2).
Check the wheel bearing and free-running
hub for grease leakage around grease
seals, axial end play and smooth turning.
Repack these in accordance with the main-
tenance schedule. In case of frequent driv-
ing in muddy water, the bearing grease and
free-running hub grease inspection should
be performed more frequently (
).
Exhaust systemVisually check the ex-
haust pipes, muffler, and hangers for proper
attachment, leaks, cracks, chafing, abra-
sion, deterioration, etc. Under severe driv-
ing conditions, inspection should be per-
formed more frequently.
Supplemental air bag systemCheck the
supplemental air bag system components
for proper attachment, damage, deformities,cracks, rust, etc. Work around and on the
supplemental air bag system should be
done by an authorized NISSAN dealer.
Maintenance
9-11
ZX