tyre pressure NISSAN PULSAR 1987 Workshop Manual

WHEELS AND TYRES
SPECIFICATIONS
TYRES PRESSURES
Front:
Normal load ............................................ 200 kPa
Heavy load or high speed ......................230 kPa
Rear:
Normal load............................................ 180 kPa
Heavy load or high speed ...................... 210 kPa
NOTE: The above pressures are measured
cold and are meant as a guide only. Always
refer to the tire placard positioned on the
inside of the glove compartment lid and the
tire manufacturers recommendations first.

TORQUE WRENCH SETTINGS
Wheel nut torque .............................................98 Nm
1. HOW TO CHANGE A ROAD WHEEL
(1) Ensure that the vehicle is on level firm
ground and clear of any passing traffic. (2) If necessary, switch on the hazard
flashers.
(3) Switch off the engine a nd place the transaxle
in the (P) Park position on automatic transaxle
models or in reverse gear on manual transaxle models.

(4) Apply the handbrake firmly and chock the
front and rear of the wheel diagonally opposite the
wheel being changed.
(5) Remove the spare wheel, tool kit and jack
located in the luggage compartment. (6) On vehicles equipped with full wheel covers,
remove the trim from the wheel. (7) Using the wheel spanner, loosen the wheel
nuts progressively in a diagonal sequence half a turn.
(8) Position the jack und er the jacking point
closest to the wheel being removed and raise the jack
until the head of the jack contacts the jacking point.
(9) Raise the vehicle slightly and check that the
jack is stable and vertical.

Underbody view showing the jacking and supporting
points. O indicates the jacking points and X indicates
the supporting points.
Chock the front and rear of the wheel diagonally
opposite the wheel being changed. View of the jack correctly installed to the rear jacking
point.

22 Wheels and Tires


View of the jack correctly installed to the front jacking point
.
(10) Continue to raise the jack until the tire
clears the ground sufficiently to allow the spare wheel
to be installed.
(11) Remove the wheel nuts and lift the wheel
off the hub.
NOTE: Under no circumstances get under
the vehicle while the jack is the only means
of support.

(12) Install the spare wh eel and install the wheel
nuts with the chamfered e nds contacting the wheels.
Tighten the wheel nuts as much as possible by hand.

(13) Lower the jack and securely tighten the
wheel nuts progressively in a diagonal sequence using
the wheel spanner. (14) Where removed, install the wheel cover.
(15) Return the spare wheel, jack and tool kit to
their relevant storage positions.

ABNORMAL WEAR ON CENTRE OF TREAD
(1) Over inflation of tires: Check and reduce to
the recommended pressure.


ABNORMAL WEAR ON INSIDE OF TREAD
(1) Excessive negative camber angle: Check the
wheel alignment. (2) Sagging coil springs: Check and renew the
coil springs as a pair. (3) Loose or worn hub bearing assembly: Check
and renew the hub bearing assembly. (4) Bent, loose or worn suspension components:
Check and renew any faulty components.
ABNORMAL WEAR ON OUTSIDE OF TREAD

(1) Excessive positive camber: Check the front
wheel alignment.
(2) Excessive speed when cornering: Revise driv-
ing habits. (3) Bent, loose or worn suspension components:
Check and renew any faulty components.


2. TYRE WEAR TROUBLE SHOOTING
ABNORMAL WEAR ON BOTH SIDES OF
TREAD

(1) Under inflation of tires: Check and inflate to
the recommended pressure.
(2) Overloading: Reduce the maximum loading. FLAT SPOTS ON TREAD OR IRREGULAR
WEAR

(1)
Static or dynamic unbalance of the wheel
and tire assembly: Check the balance of the wheel and
tire assembly. (2) Lateral run out of the wheel: Check and (rue
up or renew the wheel.
Tighten the wheel nuts in a diagonal sequence using
the wheel spanner.

Wheels and Tires 23
(3) Excessive play in the front suspension ball
joints: Check and renew the ball joints.
(4) Excessive play in the hub bearing assembly:
Check and renew the hub bearing assembly.
WORN SPOTS ON CENTRE OF TREAD

(1) Static unbalance of the wheel and tire asem-
bly: Check the balance of the wheel and tire assembly
(2) Radial run out (eccentricity) of the wheel:
Check and renew the wheel.
FEATHERED EDGES ON TREAD PATTERN

(1) Excessive speed when cornering: Revise driv-
ing habits. (2) Excessive toe-in or toe-out: Check and adjust
the wheel alignment.

(3) Bent, loose or worn suspension components:
Check and renew any faulty components.

NOTE: To preserve tire life it is good policy
to periodically have the front wheel balanced
and the steering geometry checked on a
reliable wheel alignment machine.

Under no circumstances mix radial ply
and conventional ply tire s. Install only tires
of the same construction to all four wheels.

3. CARE AND MAINTENANCE
STEEL WHEELS
Steel wheels should be regularly cleaned of all
foreign matter, such as dirt and mud. If foreign matter
is allowed to build up it will affect the balance of the
wheel and may cause vibrations and uneven tire wear.
If the paint has been chipped or scratched it should be
touched up as soon as possible to prevent rust.

Any minor damage to the wheel rim can usually
be repaired using a suitable hammer after the wheel
has been removed from the vehicle. However, any
major rim damage or buckling of the wheel will
necessitate the renewal of the wheel. It is good policy
to occasionally remove the wheels from the vehicle
and inspect them for damage, cracks or corrosion.

ALLOY WHEELS
Alloy wheels should be regularly cleaned of all
foreign matter such as dirt and mud. If foreign matter

Wheels should be cleaned regularly of dirt and mud.
is allowed to build up it will affect the balance of the
wheel and may cause vibrations and uneven tire wear.

The alloy wheels are coated with a clear protective
finish. Do not use abrasive cleaner, polishing com-
pounds, steel wool etc. when cleaning the wheels. Only
mild soap and warm wate r are recommended. Alloy
wheels are particularly su sceptible to corrosion dam-
age particularly if exposed to salt water.

Alloy wheels being relatively soft in comparison to
steel are easily scuffed, however, this will not affect the
serviceability of the wheel. Where heavy damage has
been sustained to the wheel it should be renewed.
Buckling or cracking of an alloy wheel cannot be
repaired.

TYRES
The depth of the tire tread grooves should never
be allowed to be less than 1.5 mm before the tires are
renewed. The tires should also be renewed when any
damage, whether it be internal or external, is evident.
Minor punctures or leaks s hould be properly repaired.
Refer the tire to a tire spec ialist if there is any doubt
about the serviceability of the tire.

The tread, tread grooves and sidewalls should be
regularly inspected for foreign matter i.e. nails, stones
etc. Where foreign matter is detected it should be
removed from the tire and if necessary, the puncture
repaired.

The tire valves should always have the caps
installed, be regularly cleaned of dirt or dust and be
inspected for leakage and damage every time the tire
pressures are checked.

Regularly inspect the tread of the tires for signs of
uneven wear. If uneven wear is apparent, refer to the
heading Tire Wear Trouble Shooting in this section
for possible causes and cures. If the uneven tire wear
is noticed early enough, the cause correctly identified
and the necessary cure carried out, the life of the tire
should be extended.