TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download

Page 476 of 1205

TM 9-2320-387-24-l REFERENCE INFORMATION BRAKE SYSTEM -I .Flush and bleed the brake system (para. 7-2). &laster cvlinder test aroced~ 1. With the engine off, pump the brake pedal six or seven times, or until the pedal becomes noticeably stiffer and harder to depress. 2. Press hard on the brake pedal. If the pedal keeps going down to the floor, either the master cylinder is bad or there is a leak in the hydraulic system. Replace master cylinder (para. 7-S). I Check the individual tines going to each brake. Check the supply and return lines to the hvdro-booster unit. Replace brake line (pa& 7-7). NOTE I Brake hydraulic system must be bled of air whenever hydraulic lines are broken. Bleed service brake (para. 7-2). MASTER CYLINDER COVEY PI - \ MA!SlER CYLtNDEk PISTON SEAL PISTON . DUST BOOT 2-425