TM 9-2320-272-24-1
3-181. SERVICE BRAKE CHAMBER REPLACEMENT
THIS TASK COVERS:
b. Installation
a. Removal
INITIAL SETUP:
APPLICABLE MODELS
EQUIPMENT CONDITlON
All
Parking brake set (TM 9-2320-272-10).
Air reservoirs drained (TM 9-2320-272-10).
TOOLS
Wheel brakedrum dustcovers removed
General mechanic's tool kit (Appendix E, Item 1)
MATERIALS/PARTS
GENERAL SAFETY INSTRUCTIONS
Antiseize tape (Appendix C, Item 72)
Do not disconnect air lines before draining air
reservoirs.
REFERENCES (TM)
TM 9-2320-272-10
TM 9-2320-272-24P
Do not disconnect air lines before draining air reservoirs. Small
parts under pressure may shoot out with high velocity, causing
injury to personnel.
Tag all lines for installation.
1.
Disconnect service brake control line (6) from brake adapter (7).
2.
Remove brake adapter (7) from service brake chamber (3).
3.
Disconnect vent line (5) from elbow (4).
4.
Remove elbow (4) from service brake chamber (3).
Perform step 5 for rear service brake only.
5.
Remove two nuts (9), washers (10), U-bolt (12), and clamp (11) from service brake chamber (3).
6.
Loosen collet nut (2) and remove service brake chamber (3) from actuator housing (8). Record
position for installation.
7.
Remove collet nut (2) from service brake chamber (3).
Wrap all male pipe threads with antiseize tape before installation.
1.
Install collet nut (2) on brake chamber (3).
2.
Ensuring collet nut (2) is loose, install brake chamber (3) over wedge assembly (1) and into actuator
housing (8), with brake chamber (3) positioned for air line connection. Thread collet nut (2) to
bottom of brake chamber (3) and tighten 3/16 in. (4.8 mm) or 1-1/2 teeth.
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