Operation Under Unusual Conditions (Cont)
b. Release Brakes.
Failure to ensure brake chamber is caged while
releasing brakes can result in serious injury or death.
Spring is under 2500 lb tension.
There are two types of brake chambers: Model A and
Left brake chamber on fourth axle is shown. Steps
are same for right side and third axle.
Remove dust cap (1) from brake chamber (2).
Model B brake chamber has only one nut.
Remove two nuts (3), washer (4), and release bolt (5) from bracket (6).