Preparation Of Tire; Preparation Of Rim; Inspection Before Balancing Wheels And Tires; Radial Runout Inspection - Pontiac Grand Prix Service Manual

WHEELS AND TIRES
CAUTION: Under no circumstances should wheels be
brazed, welded or peened. In the event the wheel i s
severely damaged, it should be replaced.
PREPARATION OF TIRE
Remove excess strings of rubber hanging from tire
bead.
PREPARATION OF R I M
1. Clean rim flanges with small piece of No. 3 coarse
steel wool or emery cloth to remove all oxidized
rubber, soap solution or rust. If rim is badly pitted, use
file to remove and paint with primer.
2. Straighten or replace rim if it is bent or damaged.
MOUNTING TIRE O N WHEEL
1. Install valve if valve was removed. Always install
type
T.R. 413 valve.
2. Apply liberal amounts of vegetable oil soap solution
or approved rubber lubricant to rim edges and tire
beads.
3. Mount tire on the wheel with valve hole side up,
using the machine method.
4. Remove valve core from stem to increase flow of air.
CHECK WHEEL
RADIAL
RUN OUT^^
HERE
5. With casing on the rim so that the beads are resting
uniformly on the bead ledge, quickly apply a large
volume of air. This forces the bead on the bead sear
and against the flanges where the air seal for the tire is
obtained. Inflate tire until beads art: completely forced
against rim flanges.
CA UTION: Do not stand over tire when inflating. Bead
wire may break when bead snaps over safety hump. Do
not exceed 40 lb. air pressure when inflating.
If
40 lbs.
pressure will not seat beadr properly, deflate, lubricate,
and reinflate.
6. Once beads are seated against rim flanges, air
pressure can be released.
7. Install valve core and inflate to proper specifica-
tions.
8. General precautions in mounting tires:
a. Use tire mounting and dismounting machine.'
b. Do not use hammer or tire irons.
c. Work over rim flange so that the section nearest the
valve stem will be applied last.
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INSPECTION BEFORE B A U N C I N G WHEELS AND
TIRES
1. Check and if necessary, adjust front wheel bearings
as outlined in Section 3.
2. Set tire pressure to mld specifications and drive car
until tires are hot.
Fig. 10-2 Radial Runout Inspection Fig. 10-3 Lateral Runout Inspection