Do Self-Adjusting Brake Brake Assemblies Require Initial Adjustement

Question:

Do I need to adjust the self adjust brakes when I first install them or do they adjust themselves once installed. I have 12-2, 6K brakes.

asked by: Robert S

Expert Reply:

I would recommend adjusting the brake assemblies upon installation, but after that they should not need adjustment. The brake assemblies will correct their adjustment each time the trailer is backed.

To initially adjust the brakes, jack up trailer and secure on adequate capacity jack stands. Follow trailer manufacturers recommendations for lifting and supporting the unit. Check that the wheel and drum rotate freely. Do not lift or support trailer on any part of the axle or the suspension system. Remove the adjusting hole cover from the adjusting slot on the bottom of the brake backing plate. With a screwdriver or standard adjusting tool, rotate the starwheel of the adjuster assembly to expand the brake shoes. Adjust the brake shoes out until the pressure of the linings against the drum makes the wheel very difficult to turn. Then rotate the starwheel in the opposite direction until the wheel turns freely with a slight lining drag. Replace the adjusting hole cover and lower the wheel to the ground. Repeat the above procedure on all brakes.

expert reply by: Mike L