TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
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i5. VEHICLE BRAKES UNEVENLY, BRAKES PULL TO ONE SIDE OR GRAB (CONT) WARNING Read WARNING on following page. 2. Are front wheel brake shoes free from contamination, oil, and grease? TEST OPTIONS Visual inspection REASON FOR QUESTION Brakes will slip or bind if brake shoes are contaminated. KNOWN INFO Air tanks pressurized. POSSIBLE PROBLEMS Contaminated front wheel brake shoes. Faulty front wheel brake adjustment. Faulty front axle quick release valve. Faulty air hose to front brake air chamber. Faulty front brake vent hose. Faulty front brake air chamber. Faulty load sensing valve. Contaminated rear brake shoes. Faulty rear wheel brake adjustment. Faulty relay valve. Faulty air hose to rear brake air chamber. Faulty rear brake vent hose or vent valve. Faulty rear brake air chamber(s). NO YES 3. Do brakes at one front wheel fail to apply? KNOWN INFO Air tanks pressurized. Front wheel brake shoes OK. POSSIBLE PROBLEMS Faulty front wheel brake adjustment. Faulty front axle quick release valve. Faulty air hose to front brake air chamber. Faulty front brake vent hose. Faulty front brake air chamber. Faulty load sensing valve. Contaminated rear brake shoes. Faulty rear wheel brake adjustment. Faulty relay valve. Faulty air hose to rear brake air chamber. Faulty rear brake vent hose or vent valve. Faulty rear brake air chamber(s). TEST OPTIONS Visual inspection REASON FOR QUESTION If one front wheel brake does not apply, vehicle will pull to other side when brakes are applied. NO Perform brake shoe clearance adjustment (para 11-2). YES TM 9-2320-366-20-2 2-1912 Change 1 Clean brake shoes (para 2-43) and replace wheel bearing seals (para 10-2).