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TM 9-2330-398-24
2-51. BRAKE AIR CHAMBER REPLACEMENT AND TEST.
This Task Covers:
a. Removal
b. Inspection
c. Installation
d. Test
Initial Setup:
Tools/Test Equipment:
Equipment Conditions:
• General mechanic's tool kit (Item 4, Appendix B)
• Semitrailer uncoupled (refer to TM 9-2330-398-10).
• Semitrailer bonded and grounded (refer to
Materials/Parts:
TM 9-2330-398-10).
• Lockwasher (2) (Item 107, Appendix F)
• Air reservoirs drained (refer to TM 9-2330-398-10).
• Fail-safe chamber brakes caged (para 2-60).
a. REMOVAL
1. Disconnect two brake hoses (5) from brake air chamber (4).
2. Loosen brake actuator push-rod jamnut (3). Loosen yoke adapter (11) until it is free of yoke (1).
NOTE
A lot more torque is required to rotate slack adjuster manual adjustment hex
counterclockwise than is necessary to rotate it clockwise. Torque may be as high
as 70 Ib-ft (94.9 Nom).
3. Rotate slack adjuster manual adjustment hex (8) counterclockwise until slack adjuster (9) is clear of brake
actuator push rod (2)
4. Remove two nuts (6) and lockwashers (7) and
brake air chamber (4) from bracket (10).
Discard lockwashers.
b. INSPECTION
Inspect
parts
for
damage.
Replace damaged parts.
c.
INSTALLATION
1. Install brake air chamber (4) on bracket (10) with
two nuts (6) and new lockwashers (7).
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