TM 9-2330-386-14&P
2-29 OPERATION WITH AIR BRAKE FAILURE (CAGING SPRING BRAKE CHAMBERS) (CONT)
a . Block semitrailer with wheel chocks to prevent movement.
b . Pull dust cap (1) from brake chamber (2).
c . Remove nut (3) and washer (4). Remove spring brake tool (5) from mounting hole
( 6 ) on brake chamber (2).
d . Insert spring brake tool (5) through opening in brake chamber (2). Turn spring
b r a k e tool (5) 1/4 turn clockwise to lock in manual release position.
e . Install washer (4) and nut (3) on spring brake tool (5).
f. Tighten nut (3) until 2-1/2 to 2-3/4 inches of spring brake tool (5) is
exposed.
g . Repeat steps b. through f.
f o r remaining spring brake chambers.
h. Remove wheel chocks and stow in brackets.
i . Move semitrailer off traveled portion of road.
j . B l o c k semitrailer with wheel chocks to prevent movement.
k . Notify organizational maintenance.
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