Document MJ098k92R5Mq1Nmn7vdEN5ZOL

AMERICAN BRAKEBLOK DIVISION BULLETIN NO. 19 TROUBLE SHOOTING CHECK LIST FOR TRUCKS, TRACTORS & BUSES The ready checkout list that follows shows overlapping in the possible causes for the varied complaints. Since this can be expected all possible related causes should be checked. Driver Complaints Cause8 Wheel Locked Sticking cam. Insufficient lining to drum clearance. Oversized drum with undersize lining. Frozen anchor. No Brake Loss of air. Diaphragm or hose failure Brakes Do Not Apply Restricted or broken tubing or hose Faulty brake valve. If remote mounted brake valve, check linkage. Brake Noise Heavy toe and/or heel failure Instability in shoe mounting. Too thin a drum. Stresses in block attachment. Insufficient Brakes Delivery pressure too low. Excessive push rod travels. Worn linings. Contaminated linings. Overloading vehicle. Failure of part of dual air Bystem. Glazed linings. Too low friction lining. SPNY 005992 SCF-ABEX-0021