TB 9-2320-335-13&P
1-26. SERVICE BRAKE SYSTEM OPERATION
The service brake system covered in this manual is an inboard-mounted, four-wheel, disc brake,
hydraulically-assisted system. Major components of the braking system are:
BRAKE LINKAGE Directs brake pedal pressure to hydro-booster.
A
HYDRO-BOOSTER Converts hydraulic power from the steering pump to mechanical power to
B
the master cylinder, providing power assist during braking.
MASTER CYLINDER/RESERVOIR Stores brake fluid and converts mechanical pedal pressure
C
to hydraulic pressure.
D
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
E
of pressure in steering system.
BRAKE PEDAL Provides operator control for stopping vehicle.
F
G
BRAKE PRESSURE LIMITER Limits front brake line pressure to prevent brake lockup.
C
S/N 300000
AND ABOVE
S/N 299999 AND BELOW
1-8