Brake Linings
1. Inspect components for damage and wear. Replace as necessary.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.
NOTE: A small amount of fluid is always present and considered normal.
3. Inspect backing plate for evidence of seal leakage. If leakage exists, refer to individual truck chassis chapter for axle seal replacement procedure.
4. Inspect backing plate attaching bolts.
5. Inspect adjuster screw operation. If satisfactory, lightly lubricate adjusting screw and washer with suitable brake lube. If adjuster screw does not move easily or does not move at all, replace adjuster.