Backing Plate: Testing and Inspection

WARNING: Brake assembly dust and dirt should not be removed by either blowing off with an air gun or vacuuming with a standard industrial vacuum cleaner because a health hazard from breathing in asbestos dust may develop. Also, any machining done on brake linings or pads should be done using proper exhaust-ventilated equipment.

NOTE: Removal of dust and dirt from brake assemblies should be done by using the Rotunda Brake and Clutch Service Vacuum 091-00001 or Rotunda Brake Parts Washer 065-00016 or an equivalent.

INSPECTION
1. Inspect the brake backing plate for correct mounting and securely tightened mounting nuts. Torque to 34-47 Nm (25-35 ft lb)
2. Inspect the brake shoe and lining contact pads (where the brake shoe and lining rests).
^ Deep grooves in the brake shoe and lining contact pads could restrict brake shoe and lining movement.
^ If grooves exist, hand sand the brake shoe and lining contact pads.
^ If the grooves are still present after hand sanding, the backing plates must be replaced. Any attempts to remove the grooves by grinding may result in improper brake shoe and lining to brake drum contact.
3. Inspect all other brake parts and replace any that are worn or damaged.