TM 9-2320-269-10
MANUAL RELEASE-COMPRESS PARKING SPRING BRAKE
WARNING
Block wheels to prevent truck from rolling when the spring brake power power springs are being caged
manually, to avoid personnel injury.
For towing, make sure the disabled truck is connected or secured to the tow vehicle before caging the
spring brake power spring.
NOTE
Two spring-applied, and air-released parking brakes provide service brake application, should there be a
sudden loss of air pressure. To release the spring applied service brakes to tow, the spring brake power
springs must be compressed manually. Notify organizational maintenance to bring the correct tools.
Compressing (Caging) Spring Brake
1.
Remove breather cap (1) to expose hex head (2) of the release bolt (3), down inside breather opening (4).
2.
Using a deep-well socket, turn hex head (2) on the release bolt (3) counterclockwise, about 30 turns, to
compress power spring (5).
TA 222664
2-187
