- Clean the drum with a rag and a little paint thinner.
- Inspect the drum for cracks, grooves, scoring and out-of-roundness.
- Light scoring may be removed with fine emery paper, Heavy scores or grooves will have to be removed by having the drum turned on a lathe. This can be done at many automotive machine shops and some service stations.
- Before cutting the drum it must be measured to determine whether or not the inside dimension of the drum is within limitations after removing the score marks.
- Check the drum for concentricity. An inside micrometer is necessary for an exact measurement, so unless this tool is available, the drum should be taken to a machine shop to be checked.
Make all measurements at right angles to each other and at the open and closed edges of the drum machined surface.
REMOVAL & INSTALLATION
- Remove the hub cap and loosen the lug nuts.
- Raise the rear of the vehicle and support it on jackstands.
- Remove the lug nuts, tire and wheel.
- Loosen the brake adjustment, if necessary. Remove the brake drum. Inspect the brake drum.
- Installation is the reverse of the removal procedure. Adjust the brakes, if necessary.