TM-9-2320-387-10 HMMWV Operator Manual Download
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TM 9-2320-387-10 l-23. SERVICE BRAKE SYSTEM OPERATION The service brake system is an inboard-mounted, four-wheel, disc brake, hydraulically-assisted system. Major components of the braking system are: 0 A 0 B 0 C 0 D 0 E 0 F 0 G HYDRO-BOOSTER - Converts hydraulic power from the steering pump to mechanical power to the master cylinder, providing power assist during braking. MASTER CYLINDER/RESERVOIR - Stores brake fluid, and converts mechanical pedal pressure to hydraulic pressure. PROPORTIONING VALVE - Provides balanced front-to-rear braking and activates brake warning lamp in case of brake system malfunction. ACCUMULATOR - Stores hydraulic pressure for additional power-assisted braking in case of loss of pressure in steering system. BRAKE PEDAL - Provides operator control for stopping vehicle. BRAKE LINKAGE - Directs brake pedal pressure to hydra-booster. BRAKE PRESSURE prevent brake lockup. LIMITER - Limits front brake line pressure to 1-25