wheel BUICK LESABRE 1993 Service Manual

Remove the theft deterrent wheel nut, by placing the key
end of the wire wheel key wrench over the nut and
turning it to the left.
Pull the wire wheel cover. Note: When replacing the
wheel cover, carefully line up the tire valve stem and the
notch in the wheel cover. Using the wheel wrench, loosen
all the
wheel nuts.
Don’t remove them yet. Next, attach the wheel wrench
to the bolt
on the end of the jack. Raise the jack a little
by rotating the wheel wrench clockwise (to the right).
221

Position the jack under the vehicle. There is a notch in
I ' the frame near each of the wheels. Fit the top of the jack
into the notch nearest the wheel with the flat tire.
The jack handle has markings at
8" for the rear; 10"
for the front to help you locate'the jacking notches in the
frame.
I
a CAUTION:
Getting under a vehicle when it is jacked up is I
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under
a vehicle when it is support€ -I only I a jack. the vehicle to
fall
off the iack. Be sure to fit tk

Raise the vehicle by rotating the wheel wrench
clockwise. Raise
the vehicle far enough off the ground
so there is enough room for the spare tire to fit.
Remove all the wheel nuts and take off the flat tire.
pll
f
CAUTION:
Rust or dirt on the wheel, or on the parts to
which it is fastened, can make the wheel nuts
become loose after a time. The wheel could come
riff and cause an accident. When you change a
eel, remove any rust or dirt from the places
where the wheel attaches to the vehicle. In
an
erngrgeocy, you can use a cloth or a paper towel
to do this; but be sure to use a scraper or wire
dirt Offa "
brush later, if you need to, to get all the rust or
I
Remove any rust or dirt from the wheel bolts, mounting
surfaces or spare wheel.
223

* A
wheel mounting surface.
..
, . ..
A?%%
-
I A CAUTION:
Replace the wheel nuts
with the rounded end of the
nuts toward the wheel.
Never use oil or grease on studs or nuts. If you Tighten each nut by hand
do; the nuts might come loose. Your wheel could until the wheel is held
fall off, causing a serious accident. against the hub.
Place the spare on the -- -
P

I.
Lower the vehicle by rotating the wheel wrench
counterclockwise. Lower the jack completely. Tighte.n
the wheel
nuts firmly in a criss-cross sequence
as
shown.
225

/I CAUTION:
Incorrect wheel nuts or improperly tlghtened
wheel nuts
can cause-the wheel to become loose
and even’come
off. This could lead to an
acclelent. Be sure to use the correct wheel nuts.
If you have to replace them, be sure to get the
right kind.
Stop somewhere
as soon as you can and have
the nuts tightened with a torque wrench to 100 ft.
Ibs. (1 40 Nmm).
Don’t try to put a wheel cover on your compact spare
tire. It won’t fit. Store the wheel cover in
the trunk until
you have the flat tire repaired or replaced.
Wheel covers won’t fit on your compact spare. If
you try to put a wheel cover on your compact
spare, you could damage the cover or the spare.
Now secure all the equipment back into the trunk
storage area.
I /WRENCH
&!b, CAUTION:
I
Storing a jack, a tire or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop
or collision, loose
equipment could strike someone. Store
all these
in the proper place.
226

Compact Spare Tire
Although the compact spare was fully inflated when
your vehicle was new, it can lose air after a time. Check
the inflation pressure regularly. It should be
60 psi (420
Wa). The compact spare is made to go up to 3,000 miles
(5000 km), so you can finish your trip and have your
full-size tire repaired or replaced where you want. Of
course, it’s best
to replace your spare with a full-size tire
as soon as
you can. Your spare will last longer and be in
good shape in case you need it again.
Your anti-lock brake system warning light may come
on
when you are driving with a compact spare. See
“Anti-Lock Brake System Warning Light” in the Index. Don’t
use your
compact spare on some other vehicle.
And don’t mix your compact spare or wheel with other
wheels or tires. They won’t fit. Keep your spare and its
wheel together.
Tire chains wo
them will damage
y
chains too. Do
compact spar I
A CnUTION:
Storing a jack, a tire, or other equipment in the
passenger compartment of the vehicle could
cause injury. In a sudden stop or colllsian, loose
mwipment could strike someone. Store all these
.__ the proper place.
I
227

If You’re Stuck: In Sand, Mud, Ice or
Snow
What you don’t want to do when your vehicle is stuck is
to spin your wheels. The method known as “rocking”
can help you get out when you’re stuck, but you must
use caution.
1 LAUTION:
If you let your tires spin at high speed, they can
explode and you or others could be injured. And,
the transaxle or other parts of the vehicle can
overheat. That could cause an engine
compartment fire or other damage. When you’re
stuck, spin the wheels as little as possible. Don’t
spin the wheels above 35 mph (55 km/h) as
own on the speedometer.
I
I AOTICE:
Spinning your troy pal I
vehicle as well as the tires. If you spin the wheels
too fast while shifting your transaxle
forth, you can destroy your transaxle.
Rocking your vehicle to get it out:
First, turn your steering wheel left and right. That will
clear the area around your front wheels. Then shift back
and forth between
“R” (Reverse) and a forward gear ,
spinning the wheels as little as possible. Release the
accelerator pedal while you shift, and press lightly on
the accelerator pedal when the transaxle
is in gear. If
that doesn’t get
you out after a few tries, you may need
to be towed out. If you do need to be towed out, see
“Towing Your Car” in the Index.

Tire Inspection and Rotation
To make your tires last longer, have them inspected and
rotated at the mileages recommended in the
.
Maintenance Schedule. See “Scheduled Maintenance
Services’’ in the Index.
Use this rotation pattern. After
the tires have been rotated, adjust the front and
rear inflation pressure as shown on the Tire-Loading
Information label. Make certain that all wheel nuts are
properly tightened. See “Wheel Nut Torque” in the
Index.
I
A CAUTION:
Rust or dlrt on a wheel, or on the parts to which
it is fastetfed, can make wheel nuts become
loose after a time. The wheel could come off and
cause
an accident. When you change a wheel,
remove any rust or dirt from places where the
wheel attaches
to the vehicle. In an emergency,
you can use a cloth or a paper towel to do this;
but be
sure to use a scraper or wire brush later, if
you need to, to get all the rust or dirt off. (See
“Changing a FI; Tire’* On the Index.)

A CAUTION:
;
Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes
or
types (radial and bias-belted tires), the vehicle
may not handle properly, and you could have a
crash. Be sure to use the same size and type
tires
on all four wheels.
It’s all right to drive with your compact spare,
though. It was developed for use on your vehicle.
I I
Uniform Tire Quality Grading
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration which grades tires by
treadwear, traction and temperature performance. (This
applies only to vehicles sold in the United States.)
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course. For
example,
a tire graded 150 would wear one and a half
(1 1/2) times as well on the government course as a tire graded
100. The relative performance
of tires depends
upon the actual conditions
of their use, however, and
may depart significantly from the norm due to variations
in driving habits, service practices and differences in
road characteristics and climate.
Traction - A, B, C
The traction grades, from highest to lowest are: A, B,
and C. They represent the tire’s ability to stop on wet
pavement as measured under controlled conditions
on
specified government test surfaces of asphalt and
concrete.
A tire marked C may have poor traction
performance.
Warning: The traction grade assigned to this tire
is based
on braking (straight-ahead) traction tests and does not
include cornering (turning) traction.
Temperature - A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation of
heat and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory
test wheel. Sustained high temperature can cause the
material
of the tire to degenerate and reduce tire life, and
excessive temperature can lead to sudden tire failure.
The grade
C corresponds to a level of performance