TM 9-2330-386-14&P
4-32 SPRING BRAKE CHAMBERS.
This task covers removal, installation, and testing.
INITIAL SETUP
Eguipment Condition
Tools
References
General mechanics tool kit
T o r q u e wrench
Para. 2-29 Spring brake caged.
Para. 3-6 Drain cocks open.
P a r a . 4-27 Air hoses disconnected
Materials/Parts
f r o m brake chamber.
O E / H D O oil (item 10, Appendix E)
T a g s (item 15, Appendix E)
s o a p (item 17, Appendix E)
a. Removal.
WARNING
Caged spring in bottom chamber is under 2,500 pounds of
tension. Use extreme care when performing maintenance.
Do not position yourself in front of, or in line with the
spring brake assembly. Perform necessary maintenance from
the side.
Inspect clamp bands, castings, and fasteners for external
damage. I f damage to these items is evident, do not
a t t e m p t u n c a g i n g procedure. Replace brake chamber.
F a i l u r e to observe these warnings could result in serious
personal injury and damage to equipment.
(1) Chock wheels to prevent semitrailer from rolling.
(2) Remove small cotter pin (1) and clevis pin (2).
(3) Remove large cotter pin (3) and clevis pin (4).
(4) Measure and record distance between brake chamber (7) and clevis (8) to
aid installation.
WARNING
Be sure spring brake is caged. Failure to observe this
warning could result in personal injury or death.
(5) Remove two lock nuts (5), washers (6), and brake chamber (7).
4-58
