i5.  VEHICLE BRAKES UNEVENLY, BRAKES PULL TO ONE SIDE OR GRAB (CONT) TM 9-2320-365-20-2 2-1680          Change 1             KNOWN INFO                         TEST OPTIONS                REASON FOR QUESTION                TEST OPTIONS                REASON FOR QUESTION                 KNOWN INFO              4. 5. Air tanks pressurized. Front wheel brake shoes OK. Front wheel brake adjustment OK.        POSSIBLE PROBLEMS        YES NO If air hose to front brake(s) is damaged or blocked, brakes will not operate on affected side of vehicle.        POSSIBLE PROBLEMS        YES Replace damaged air hose(s) (para 11-19). NO Replace front axle quick release valve (para 11-15). If front axle quick release valve is providing air to only one delivery hose, front brakes will only apply on one side. Is air present at front brake air chamber on affected side of vehicle when brakes are applied? Air tanks pressurized. Front wheel brake shoes OK. Front wheel brake adjustment OK. Front axle quick release valve OK. 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). 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). When brakes are applied, is air present at front axle quick release valve delivery port to failed brake? Audible and Visual inspection Audible and Visual inspection