TM 9-2320-272-24-1
3-182. COMBINATION SPRING (EMERGENCY) AND SERVICE BRAKE CHAMBER
REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
TM 9-2320-272-10
All
TM 9-2320-272-24P
TOOLS
General mechanic's tool kit (Appendix E, Item 1)
EQUIPMENT CONDITION
Air reservoirs drained (TM 9-2320-272-10).
MATERIALS/PARTS
Spring (emergency) brake caged (TM 9-2320-272-10).
Antiseize tape (Appendix C, Item 72)
GENERAL SAFETY INSTRUCTIONS
Do not disconnect air lines before draining air
reservoirs.
Do not disconnect air lines before draining air reservoirs. Small
parts under pressure may shoot out with high velocity, causing
injury to personnel.
Tag lines for installation.
1.
Disconnect two vent lines (4) from tee (5).
2.
Disconnect supply line (1) from elbow (3).
3.
Disconnect control line (2) from elbow (13).
4.
Loosen collet nut (10) and remove two nuts (6), washers (7), U-bolt (11), and bracket (8) from
combination spring and service brake chamber (12).
Ensure wedge assembly does not fall out of plunger housing.
5.
Remove combination spring and service brake chamber (12) from plunger housing (9) and pull
straight away from plunger.
Wrap all male pipe threads with antiseize tape before installation.
1.
Ensuring collet nut (10) is loose, install combination spring and service brake chamber (12) in plunger
housing (9) until secure, with service brake chamber (12) positioned for air line connections. Thread
collet nut (10) to bottom of service brake chamber (12) and tighten 3/16 in. (4.8 mm) or 1-1/2 teeth.
2.
Connect control line (2) to elbow (13).
3.
Connect supply line (1) to elbow (3).
4.
Connect two vent lines (4) to tee (5).
5.
Install U-bolt (11) and bracket (8) on service brake chamber (12) with two washers (7) and nuts (6).
3-506
