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3-64 Tires and Wheels
Suspension
Radial Tire Lead/Pull Correction (cont'd)
Step
Action
8
Replace left rear tire.
Is repair complete?
9
Replace right rear tire.
Is repair complete?
Repair Instructions
Aluminum Wheel Hub Cap Replacement
Removal Procedure
Use the following procedure in order to remove the
hub cap:
·
1. Insert a flat-bladed tool into the slot between the
rim and the hub cap.
2. With the tool in position, pry off the hub cap.
3. Remove the hub cap.
Installation Procedure
Install the hub cap.
Use a rubber mallet in order to fully seat the hub cap
into the rim.
·
Aluminum Wheel Porosity Repair
Removal Procedure
1. Raise and suitably support the vehicle. Refer to
Vehicle Lifting and Jacking in General Information.
2. Remove the tire and the wheel. Refer to Tire and
Wheel Removal and Installation
3. Locate the leaking areas by inflating the tire to
280 kPa (40 psi) and dipping the tire and the
wheel into a water bath.
4. Mark the leak areas
5. Mark the tire at the valve stem.
6. Remove the tire from the wheel. Refer to Tire
Mounting and Dismounting.
7. Scuff the inside rim surface at the leak area with a
number 80 grit sandpaper.
8. Clean the area with a general purpose cleaner
such as 3M part number 08984 or the equivalent.
9. Apply 3 mm (1/8 in) thick layer of
adhesive/sealant, GM P/N 1052366 or the
equivalent, to the leak test area. Allow six hours
of drying time.
Value(s)
Yes
No
-
-
System OK
-
-
System OK
Installation Procedure
1. Install the tire to the wheel. Refer to Tire Mounting
and Dismounting.
2. Align the matchmark on the tire with the
valve stem.
3. Pressurize the tire to 280 kPa (40 psi) and inspect
for leaks.
4. Adjust the tire pressure
in
order to meet the
specifications on the tire placard.
5. Balance the tires and wheels. Refer to Balancing
Tires and Wheels in Vibration Diagnosis and
Correction.
6. Install the tire and the wheel. Refer to Tire and
.
.
Wheel Removal and Installation.
7. Lower the vehicle.
Aluminum Wheel Refinishing
Wheel Refinishing·
A protective clearcoat and/or base color is applied to
the surface of the original equipment cast aluminum
wheels. Surface degradation can begin to develop
if uncoated balance weights are used, or if frequent,
repeated automatic car wash cleaning wears off
the factory applied protective clearcoat and/or base
color. This can happen at some automatic car
wash facilities that use aggressive silicone carbide
tipped tire brushes to clean the whitewalls and
the tires. Exposure to caustic .cleaners and/or to road
salt causes further surface degradation once the
protective clearcoat is damaged.
The refinishing of aluminum wheels requires that the
wheel surface be plastic media blasted to remove
old clearcoat or paint. The remachining or the use of
chemical strippers is not recommended due to the
concerns for repair durability. The se.rvice procedure
details how to strip, how to clean, and how to
recoat the aluminum wheels that are affected by the
above condition.
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