1999 NISSAN FRONTIER suspension

CAUTION
If you have to tow your vehicle with four
wheels on the ground or with front or
rear wheels raised, observe the follow-
ing restricted towing speeds and dis-
tances:
ISpeed: Below 60 MPH (97 km/h)
IDistance: Less than 500 miles (805
km)
If the speed or distance must necessarily be
greater, remove the front and rear propeller
shafts beforehand to prevent damage to the
transmission.
CAUTION
INever tow your vehicle from the rear
(i.e., backward) with four wheels on
the ground as this may cause seri-
ous and expensive damage to the
transmission.
IBe sure to place the transfer case
shift lever into the 2H position and
the transmission shift lever into the
N (Neutral) position.
VEHICLE RECOVERY (freeing a
stuck vehicle)
ITow chains or cables must be attached
only to the main structural members of
the vehicle.
IPulling devices should be routed so they
do not touch any part of the suspension,
steering, brake or cooling systems.
IAlways pull the cable straight out from
the front or rear of the vehicle. Never pull
the vehicle at an angle.
IPulling devices such as ropes or canvas
straps are not recommended for use in
vehicle towing or recovery.
IStand clear of a stuck vehicle.
WARNING
Do not spin your tires at high speed.
This could cause them to explode and
result in serious injury. Parts of your
vehicle could also overheat and be
damaged.
In case of emergency
6-13
ZX

you in choosing the proper product.
IWax your vehicle only after a thorough
washing. Follow the instructions sup-
plied with the wax.
IDo not use a wax containing any abra-
sives, cutting compounds or cleaners
that may damage the vehicle finish.
IIf the surface does not polish easily, use
a ``road tar'' remover and wax again.
Machine compounding or aggressive pol-
ishing on a base coat/clear coat paint finish
may dull the finish or leave swirl marks.
Only apply black wax or black shoe polish to
the black urethane or polypropylene
bumper.
Removing spots
Remove tar and oil spots, industrial dust,
insects and tree sap as quickly as possible
from the surface of the paint to avoid per-
manent damage or staining. Special clean-
ing products are available at an authorized
NISSAN dealer or any automotive accesso-
ries store.
Underbody
In areas where road salt is used in winter, itis necessary to clean the underbody regu-
larly in order to prevent dirt and salt from
building up and causing corrosion on the
underbody and suspension. Before the win-
ter period and again in the spring, the
underseal must be checked and, if neces-
sary, retreated.
Cleaning glass
Use glass cleaner to remove smoke and
dust film from the glass surfaces. It is nor-
mal for glass to be coated with a film after
the vehicle is parked in the hot sun. Glass
cleaner and a soft cloth easily remove this
film.
CAUTION
When cleaning the inside of the win-
dow, do not use any sharp-edged tools
or abrasive cleaners or chlorine-based
disinfectant cleaners. They could dam-
age the electrical conductors, radio an-
tenna elements or rear window defog-
ger elements.
Cleaning aluminum alloy wheels
Wash regularly, especially during winter
months in areas where road salt is used.Salt could discolor the wheel if not removed.
Chrome parts
Clean all chrome parts regularly with a
non-abrasive chrome polish to maintain the
finish.
Cleaning interior
Occasionally remove loose dust from the
interior trim, plastic parts and seats using a
vacuum cleaner or soft brush. Wipe the
vinyl and leather surfaces with a clean, soft
cloth dampened in mild soap solution, then
wipe clean with a dry soft cloth. Before
using any fabric protector, read the manu-
facturer's recommendations. Some fabric
protectors contain chemicals that stain or
bleach the seat material.
CAUTION
INever use benzine, thinner or any
similar material.
INever use fabric protectors unless
recommended by the manufacturer.
Appearance and care
7-3
ZX

Schedule One
Abbreviations: R = Replace I = Inspect. Correct or replace if necessary. [ ]: 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 & differen-
tial gear oil (exc. LSD)See NOTE (1)IIII
Limited-slip differential (LSD) gear oil See NOTE (1) I R I I
Manual transmission oil See NOTE (1) I I I [R]
Steering gear (box) & linkage, axle & suspension partsIIIIIIII
Drive shaft boots & propeller shaft (
) IIIIIIII
Front wheel bearing grease (4x2)II
Front wheel bearing grease & free-running
hub grease (
)See NOTE (2)IRIR
Exhaust systemIIIIIIII
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.
Maintenance9-7
ZX

Schedule Two
Abbreviations: R = Replace I = Inspect. Correct or replace if necessary. [ ]: 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
Drive shaft boots (
) IIII
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.
Maintenance9-9
ZX

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 lines (hoses, piping, connections,
etc.)Check the fuel hoses, piping and con-
nections for leaks, looseness or deteriora-
tion. 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.
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 (box) and linkage, axle and
suspension 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.
9-10Maintenance
ZX

Trailer hitch
Check the towing capacity of your bumper
hitch or receiver-type frame mounted hitch.
Choose a proper hitch for your vehicle and
trailer. A genuine Nissan trailer hitch is avail-
able from your NISSAN dealer (Canada
only). Make sure the trailer hitch is securely
attached to the vehicle to help avoid per-
sonal injury or property damage due to
sway caused by crosswinds, rough road
surfaces or passing trucks.
CAUTION
ISpecial hitches which include frame
reinforcements are required for tow-
ing above 2,000 lb (907 kg). Suitable
genuine NISSAN hitches for pickup
trucks are available at an authorized
NISSAN dealer.
IDo not use axle-mounted hitches.
IDo not modify the vehicle exhaust
system, brake system, etc. when the
hitch is installed.
ITo reduce the possibility of addi-
tional damage if your vehicle is
struck from the rear, where practical,remove the hitch when not in use.
Remove receiver when not in use.
After the hitch is removed, seal the
bolt holes to prevent exhaust fumes,
water or dust from entering the pas-
senger compartment.
ICheck regularly to make sure that all
trailer hitch mounting bolts are se-
curely fastened.Tire pressures
IWhen towing a trailer, inflate the vehicle
tires to the recommended cold tire pres-
sure indicated on the tire placard (af-
fixed to the inside of the glove box lid).
ITrailer tire condition, size, load rating
and proper inflation pressure should be
in accordance with the trailer and tire
manufacturers' specifications.
Safety chain
Always use suitable safety chains between
your vehicle and the trailer. Safety chains
should be crossed and should be attached
to the hitch, not to the vehicle bumper or
axle. Be sure to leave enough slack in the
chain to permit turning corners.
Trailer lights
Trailer lights should comply with Federal
and/or local regulations. For assistance in
hooking up trailer lights, contact an autho-
rized NISSAN dealer.
Trailer brakes
If your trailer is equipped with a braking
system, make sure it conforms to Federal
and/or local regulations and that it is prop-
erly installed.
WARNING
Never connect a trailer brake system
directly to the vehicle brake system.
Pre-towing tips
IBe certain your vehicle maintains a level
position when a loaded and/or unloaded
trailer is hitched. Do not drive the vehicle
if it has an abnormal nose-up or nose-
down condition; check for improper
tongue load, overload, worn suspension
or other possible causes of either con-
dition.
IAlways secure items in the trailer to
10-24Technical and consumer information
ZX