Brake and Air System Maintenance Instructions (Cont)
REAR BRAKE CHAMBER AND REAR ARCTIC BRAKE CHAMBER
Failure to ensure brake chamber is caged while releasing brakes can result in serious injury
or death. Spring is under 2500 lb (1135 kg) tension.
There are two types of brake chambers: Model A and Model B. Both brake chambers
are removed the same way. Refer to TM 9-2320-279-24P for proper part
identification if chambers must be repaired or replaced.
Model A brake chamber has a clamp band that retains the spring brake side of
chamber. It also has the release bolt mounted at top of chamber. Model B has a
permanently sealed spring brake side of chamber. The release bolt is mounted at
middle of chamber.
Arctic brake chamber is no longer used, and has been replaced with Model B type
chamber. Replace all arctic brake chambers with the Model B type chamber if arctic
chamber needs repair or replacement.
Refer to TM 9-2320-279-24P for parts
Model A rear brake chamber and arctic brake chamber are removed the same way.
Perform steps (1 through 6) for Model A. Perform steps (1 through 5) and skip to
step (6.1) for Model B.
Remove dust cap (1) from brake chamber (2).
Model B has only one nut.
Remove two nuts (3), washer (4), and release bolt (5) from bracket (6).