REMOVAL & INSTALLATION
See Figures 1 and 2
11:06 AM 11/3/00
These vehicles use a variety of wheel styles, but from the factory they are all one piece rims with 5 bolt holes. Standard sizes are 15 in., although an aluminum wheel or steel wheel are available with the Caprice. A space saver spare for emergency use only comes with the vehicle also.
- When removing a wheel, loosen all the lug nuts 2 turns with the wheel on the ground, then raise and safely support the vehicle.
- If the wheel is stuck or rusted on the hub, make all the lug nuts finger tight, then back each one off 2 turns. Put the vehicle back on the ground and rock it side to side. Get another person to help if necessary. This is far safer then hitting a stuck wheel with the vehicle on a jack or lift.
- When installing a wheel, tighten the lug nuts in a rotation skipping every other one. If the nuts are numbered 1 through 5 in a circle, the tightening sequence will be 1-3-5-2-4.
- Always use a torque wrench to avoid uneven tightening, which will distort the brake drum or disc. Torque the nuts to 100 ft. lbs. (140 Nm).
See Figure 3
Wheels can be distorted or bent and not effect dry road handling to a noticeable degree. Out of round wheels will show up as uneven tire wear, a thumping noise or will make it difficult to balance the tire. Runout can be checked using a suitable dial indicator with the wheel on or off the vehicle, with the tire on or off the rim.
- If the tire is on the wheel, set a dial indicator to touch the wheel in position"A" in the illustration to measure lateral runout.
- To measure radial runout, set the dial indicator to position"B".
- If the tire is not on the wheel, use the same positions on the inside of the rim. This is usually more accurate and easier to get a clean surface for the indicator stem.
- For steel wheels, the radial runout limit is 1mm (0.040 inch), the lateral runout limit is 1.1mm (0.045 inch).
- For aluminum alloy wheels, the limit for both runout directions is 0.8mm (0030 inch).