Wheel Cylinder: Testing and Inspection

1. Inspect components for damage and unusual wear. Replace as necessary.

Inspecting Wheel Cylinder:

2. Inspect wheel cylinders. Boots which are torn, cut or heat damaged indicate need for wheel cylinder replacement. Peel back lower edge of boot. If fluid spills out, cup leakage is indicated and wheel cylinder should be replaced.

NOTICE: A small amount of fluid is always present and is considered normal, acting as a lubricant for the cylinder pistons.

3. Inspect backing plate attaching bolts and ensure they are tight.
4. Using fine emery cloth or other suitable abrasive, clean rust and dirt from shoe contact surfaces on backing plate.
5. Check adjuster screw operation. If satisfactory, lightly lubricate adjusting screw and washer with suitable brake lube. If operation is unsatisfactory, replace.