Brake Adjuster: Testing and Inspection

Accessing The Automatic Adjuster Quadrant:

AUTOMATIC ADJUSTER QUADRANT TESTING
1. Place the vehicle on a frame contact hoist with a helper in the driver's seat to apply the brakes.
2. Raise the vehicle.
3. Remove the adjuster access plug from the rear brake support plate automatic adjuster access hole.

NOTE:
^ This will allow access to the adjuster quadrant on the automatic adjuster mechanism.
^ To eliminate the possibility of maximum adjustment, insert a small screwdriver through the access hole in the support plate and back off adjuster quadrant approximately 4 to 5 notches.

4. Fully apply the brake pedal which will cause the brake shoes to leave the anchor.

NOTE:
^ Upon application of the brake pedal, the adjuster quadrant should move.
^ A definite rotation of the adjuster quadrant should be observed if the automatic adjuster is working properly.
^ If one or more adjusters do not function properly, the respective drum must be removed for adjuster mechanism servicing.