TB-9-2320-335-13&P HMMWV Operator and Field Maintenance, Parts, Tools M1151A1 M1152A1 M1165A1 Download
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2-31/(2-32 blank) TB 9-2320-335-13&P REFERENCE INFORMATION BRAKE SYSTEM PROPORTIONING VALVE (S/N 299999 AND BELOW) (S/N 300000 AND ABOVE) HYDRO-BOOSTER PROPORTIONING VALVE HYDRO-BOOSTER Test for faulty proportioning valve: Drive the vehicle and have an assistant observe during the performance of this test. With vehicle at curb weight, decelerate vehicle from 45 to 40 mph (72 to 69 kph) on dry concrete road and apply sufficient pressure to lock up front brakes. If rear brakes lock up before front brakes, the proportioning valve should be replaced. Replace proportioning valve (TM 9-2320-387-24-1). Method for checking hydro-booster: Depress brake pedal several items to exhaust accumulator pedal. Depress brake pedal and start engine. Brake pedal should fall, then push back against operator’s foot. Replace hydro-booster (TM 9-2320-387-24-1). Replace service brake pedal (TM 9-2320-387-24-1). The steering tests will check for suspension problems that will affect braking. NYLON BRAKE PEDAL BUSHING