TB-9-2320-335-13&P HMMWV Operator and Field Maintenance, Parts, Tools M1151A1 M1152A1 M1165A1 Download
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TB 9-2320-335-13&P 7-4 7-2.1. SERVICE BRAKE SYSTEM BLEEDING INSTRUCTIONS (SERIAL NUMBERS 300000 AND ABOVE) (Cont’d) CAUTION • Check the master cylinder fluid level frequently during the bleeding operation and refill the reservoir as necessary. Do not allow the master cylinder to run out of fluid at any time or additional air will be drawn into the system. • After adding silicone brake fluid to master cylinder, let cylinder sit undisturbed for 30 minutes minimum to ensure all visible as well as minute air bubbles are gone. NOTE • This procedure covers bleeding at one caliper. Repeat bleeding task for remaining calipers. • Assistant is required to depress the brake pedal when manually bleeding brakes while mechanic opens and closes bleeder screw. 1. Connect short piece of hose (3) to bleeder screw (2) on brake caliper (5) and place other end of hose in container ¾ full of brake fluid (4). 2. Have assistant pump brake pedal toward floor and hold it there. Open bleeder screw (2) ¾ turn. 3. When pedal reaches floor, tighten bleeder screw (2) and have assistant slowly release brake pedal. 4. Repeat steps 2 and 3 until fluid flows clear and free of air bubbles. 5. Disconnect hose (3) from bleeder screw (2). 6. Repeat manual bleeding for opposite side (1) of same caliper (5). 7. Fill master cylinder reservoir with silicone brake fluid to MAX line. b. Manual Bleeding 1 2 3 4 5