UNCAGING SPRING BRAKE CHAMBERS
This task covers:
General mechanics tool kit
Spring Brake Tool
Caged spring in bottom chamber is under 2,500 lbs of
tension. Use extreme care when performing
Do not position yourself in front of, or in line with
the spring brake assembly. Perform necessary
maintenance from the side.
Read all manufacturer's warning labels before uncaging.
Inspect clamp bands, castings, and fasteners for
external damage. If damage to these items is evident,
do not attempt uncaging procedure. Refer to para. 4-40
for removal instructions.
Failure to observe this warning could result in serious
personal injury and damage to equipment.
Block semitrailer with chock blocks to prevent movement.
b. Slowly loosen nut (1, fig. 4-36) and washer (2) on spring brake tool (3).
Remove nut (1) and washer (2).
c. Turn spring brake tool (3) 1/4 turn counterclockwise to unlock from manual
release position. Remove spring brake tool (3).
Install plug (4) on spring brake chamber (5).
Insert spring brake tool (3) in mounting hole (6) in spring brake chamber
(5). Secure spring brake tool (3) with washer (2) and nut (l).