The brake drums must be removed to inspect the linings. If they are worn to 1 / 32 in. or less at any point, the linings must all be replaced.
This may not agree with your state's inspection specifications.
REMOVAL & INSTALLATION
Remove the wheel and brake drum and proceed as follows:
If you are not thoroughly familiar with the procedures involved in brake replacement, disassemble and assemble one side at a time, leaving the other wheel intact, as a reference.
- Remove the shoe return springs using a brake spring service tool. Detach the adjusting cable eye from the anchor and unhook the other end from the lever. Remove the cable, overload spring, guide and anchor plate.
- Detach the adjusting lever from the spring, and separate the spring from the pivot. Remove the lower return spring completely from the secondary shoe web and unfasten it from the primary shoe web.
- Remove the retainers, springs, and nails from the shoe. Extract both shoes from the pushrods, and lift them out. Remove the star wheel assembly from the shoes.
- Detach the parking brake lever from the brake shoe.
- Remove the parking brake lever strut, as well as the anti-rattle spring.
- Put a thin film of high temperature grease at the six shoe tab contact areas on the support plate.
- Lubricate the pivot on the inner side of the secondary shoe web, and install the parking brake lever on it. If equipped, fasten the lever with its washer and horseshoe clip.
- Slip the secondary shoe next to the support plate, while engaging the shoe web with the pushrod, and push it against the anchor.
- Position the parking brake strut behind the hub and slide it into the slot in the lever. Fit the anti-rattle spring over the free end of the strut.
- Position the primary shoe, engage it in the pushrod and with the free end of the parking brake strut. Place the anchor plate over the anchor and fit the eye of the adjustment cable over the anchor. Connect the primary shoe return spring to its web and fit its other end over the anchor.
- Place the cable guide in the secondary shoe web. Hold it in this position while engaging the secondary shoe return spring, which goes through the guide and into the web. Put its other end over the anchor.
Be sure that the cable guide stays flat against the web, and that the secondary shoe return spring overlaps that of the primary.
Squeeze the spring loops around the anchor, with pliers, until they are parallel.
- Place the star wheel assembly between the shoes, with the star wheel assembly adjacent to the secondary shoe. The left rear star wheel is plated and marked with an "L."
- Place the adjustment lever spring over the pivot pin on the shoe web and fit the lever under the spring, but over the pin. To lock the lever, push it toward the rear.
- Install the shoe retaining nails, retainers, and spring. Thread the adjusting cable over the guide. Hook the end of the overload spring in the adjustment lever, making sure that the cable remains tight against the anchor and is aligned with the guide.
- Install the brake drum and adjust the brakes. Initial adjustment is the same as for front drum brakes.
INITIAL BRAKE ADJUSTMENT
Although the brakes are self adjusting, it is best to make an initial adjustment after backing off the adjuster to remove the brake drum or after shoe replacement.
- Raise the wheels to be adjusted so that they are free to spin.
- Remove the rear adjusting hole cover from the backing plate.
- Make sure the parking brake is fully released.
- Insert an adjusting tool or screwdriver in the hole until it contacts the star wheel. Lift the handle of the tool upward, rotating the star wheel, until there is a slight drag felt when the tire is rotated.
- Insert a piece of welding rod or a thin screwdriver into the adjustment hole. Push against the adjusting lever and hold it away from the star wheel. Back off on the star wheel until no drag is felt. Replace the adjusting hole cover.
- Repeat on the other wheel.