Brakes, Drum

NOTE: In order to properly inspect the rear brakes, the brake drum (1126) must be removed. Refer to Section 06-02.

Perform the following checks during drum brake diagnosis. Refer to Section 06-02 for additional service and repair procedures.

1. Inspect the brake shoe and lining material for the following conditions:

   • wear beyond service limits
   • uneven wear
   • cracks
   • scoring
   • gouges
   • contamination from grease or brake fluid

2. Inspect the rear wheel cylinder (2261) for signs of leakage.

3. NOTE: A good spring will make a dull thud when dropped on a concrete floor. A heat-damaged spring that has lost tension will make a distinctive ringing sound when dropped on a concrete floor.

   Check the brake shoe adjusting screw springs (2049) and brake shoe retracting springs (2296) for the following signs:

   • heat damage
   • bends or damage to coils or shank
   • loss of tension

4. Check the brake backing plate shoe support pads for signs of scoring. The support pads must be smooth and have a light coating of lithium grease.

5. Inspect the brake drum for scratches, scoring, bell mouth and out-of-round conditions.