1 / 8 in. thick at the lowest point on the brake shoe. The limit for rear brake linings is 1 / 18 .
Remove the drum and inspect the lining thickness on both brake shoes. A front brake lining should be replaced if it is less than
Brake shoes should always be replaced in axle sets.
REMOVAL & INSTALLATION
- Support the car on jackstands, slacken the parking brake cable and remove the rear wheels, rear brake drums, and front drums and hub assemblies.
- Free the brake shoe return springs, actuator pull-back spring, hold-down pins and springs, and actuator assembly.
- On rear wheels, disconnect the adjusting mechanism and spring, and remove the primary shoe.
- Disconnect the parking brake lever from the secondary shoe and remove the shoe. Front wheel shoes may be removed simultaneously.
- Clean and inspect all parts. Scored or out-of-round drums should be reconditioned or replaced.
- Check wheel bearings, oil seals, wheel cylinders, and rear axle seals; repacking or replacing as needed.
- Inspect the replacement shoes for nicks or burrs, lubricate the backing plate contact points, brake cable and levers, and adjusting screws, then reassemble.
- Be sure that the left and right-hand adjusting screws are not mixed. The star wheel should be nearest the secondary shoe when properly installed.
- Reverse the procedure for reassembly. When completed, make an initial adjustment as described under adjustments.