Installing The Wheel And Tire Assembly; Aluminum Wheel Refinishing - GMC G Service Manual

INSTALLING THE WHEEL AND
TIRE ASSEMBLY
CAUTION: Before reinstalling the wheels,
remove any build up of corrosion on the wheel
mounting surface and brake drum or disc
mounting surface by scraping and wire
brushing. Installing wheels with poor metal-to-
metal contact at the mounting surfaces can
cause wheel nuts to loosen. This can lead to a
wheel coming off while the vehicle is moving,
possibly causing loss of control.
SINGLE WHEELS
M Install or Connect (Figure 8)
1. Wheel and tire assembly in position on the hub/rotor,
with lug nuts loosely installed.
2. Turn the wheel until one nut is at the top of the bolt
circle. Tighten the nut just snug.
3. Snug up the remaining nuts criss-cross to minimize
runout.
| ^ \ | Tighten
• Nuts to "Specifications" at the end of this section.
• Tighten evenly and alternately to avoid excessive
runout (figure 8).
DUAL WHEELS
H Install or Connect (Figure 8)
1. Inner and outer wheel and clamp ring on the rear
wheel, or wheel and clamp ring on the front wheel.
• Be sure the pins on the clamp ring face outward.
2. Lug nuts finger tight.
Tighten
• Nuts to "Specifications" at the end of this sec­
tion.
• For P30 models, tighten to 210 N»m (155 ft.
lbs.), then tighten again to 240 N*m (177 ft. lbs.).
• Tighten evenly and alternately to avoid exces­
sive runout (figure 8).
WHEELS AND TIRES 3E-9
H I Measure
• Lateral runout should not exceed 3.18mm (0.125
inches) on the front wheel or 4.76mm (0.187 inches)
on the rear wheel.

ALUMINUM WHEEL REFINISHING

• Remove the tire and wheel assembly from the
vehicle.
• Mark the position of the wheel weights on the tire for
correct reinstallation after recoating the wheel.
Remove the wheel weights and mask off the tire.
1. Remove the original clear coating.
• Apply a chemical stripper such as 3M brand
Troubleshooter (or equivalent) to the wheel rim
surface.
• Wait 10 to 15 minutes, then wet scrub the sur­
face using a 3M #98 Scotchbrite Cleaning Pad
(3M part number 07445) (or equivalent).
• Rinse the surface thoroughly with clean water.
CAUTION: Use of eye goggles is necessary to
prevent personal injury.
2. Remove surface oxidation.
• Use 3M Superbuff Buffing Pad (3M part number
05701) (or equivalent) and a medium type com­
pound such as 3M part number 05955 or
05931.
• Hose off the rim with water and scrub with a
small brush to remove excess compound, then
air blow dry.
3. Recoat the wheels.
• Clean the surface of any contaminants using
Prekleno (or equivalent).
• Apply #801 Metal Conditioner (or equivalent),
taking care to use rubber gloves and a clean
cloth during the application. Keep the surface
wet while applying.
m Important
• Make sure #801 Metal Conditioner (or equivalent) is
reduced one part metal conditioner to three parts of
water.
• Wipe off #801 Metal Conditioner (or equivalent) care­
fully while the surface is still wet. Use a clean, dry
cloth.
4. Apply the clear coat.
• Apply R & M's 893 2K Clear (or equivalent) with
894 Urethane Catalyst Hardener (or equiva­
lent). Refer to the label for specific directions.
• Wear proper respiratory protection such as a
3M Paint Respirator (part number 06984) or
Easi-Air Respirator (part number 06986) (or
equivalent).
5. Allow the wheel to air dry overnight (minimum) before
installing on the vehicle.