TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 76 of 1337
TM 9-2320-260-20
1-21. COMPRESSED AIR AND AIR-HYDRAULIC BRAKE SYSTEM OPERATION (Contd)
b. Air-Hydraulic Brake System Operation.
A
B
C
D
E
F
G
H
BRAKE PEDAL -
Operator control for slowing and stopping vehicle. Applies force through brake
linkage to master cylinder to actuate vehicle brakes.
BRAKE LINKAGE -
Transmits brake pedal force to master cylinder.
MASTER CYLINDER –
Stores brake fluid and is the filling location for adding brake fluid.
Converts force from brake linkage into hydraulic pressure.
AIR-HYDRAULIC UNIT -
Combines hydraulic pressure from master cylinder and air pressure
from compressed air system to apply increased hydraulic pressure to the vehicle brakes.
HYDRAULIC BRAKE LINES -
Direct brake fluid under hydraulic pressure to all six wheel
cylinders.
WHEEL CYLINDER -
Converts hydraulic pressure into mechanical force to press brakeshoes
against surface of brakedrum.
BRAKEDRUM
- Encloses wheel cylinder and brakeshoes, and provides a surface for brakeshoes
to press against.
BRAKESHOES -
Apply friction to brakedrum to slow or stop rotation of wheels.
1-63
Back to Top
