Demco CR 108, Operator'S Manual, Page: 48 / 104

48
Malfunction Probable Cause Corrective Action
Slow brake A. Maximum brake chamber pushrod travel. A. Adjust slack adjuster and adjust
application or brakes as necessary.
slow release.
B. Weak brake shoe return spring. B. Check brake shoe return spring and
Replace if found to be weak.
Grabbing brakes A. Lubricant on brake lining. A. Inspect for lubricant on brake lining.
or wheels. Replace brake shoe assembly if
lubricant on lining is evident.
B. Loose brake lining. B. Inspect brake lining for sheared or
worn rivets or bolts. Replace defective
brake shoe assembly.
C. Loose or worn wheel bearings. C. Adjust wheel bearings. If adjustment of
wheel bearings does not correct the
condition of loose wheels, replace
bearings.
D. Distorted brake linings. D. Replace brake shoe assembly.
Noisy brakes. A. Lining or rivets loose. A. Replace brake drum assembly.
B. Road grit, rust, or metal particles in brake B. Clean brake drum and lining. Replace
drum or lining. Brake shoe assembly if grit or metal
particles are embedded in the lining.
C. Brake drum out of round or scored. C. Repair or replace brake drum.
Troubleshooting
Wheels, Hubs, Bearings, And Tires
(Continued)