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TM 9-2330-398-24
2-52. .SERVICE AND EMERGENCY COUPUNGS, AIR LINES, AND FITTINGS REPLACEMENT.
This Task Covers:
a. Packing Ring Replacement
b. Air Line Repair
c. 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/Part:
TM 92330-398-10).
Soap (Item 28, Appendix C)
Packing ring (Item 127, Appendix F)
a. PACKING RING REPLACEMENT
1. Remove packing ring (2) from coupling (1). Discard packing ring.
2. Clean groove in coupling (1).
NOTE
Packing ring must lie flat, with no twists or bulges.
3. Partially collapse new packing ring (2) and put one side of packing ring flange into groove. Use blunt-ended tool to
Push packing ring (2) into place in coupling (1).
b. AIR-LINE REPAIR
1. Tighten screw (3) holding any of 17 air-line clips (4).
2. Tighten fittings (5) if leaks are found. Replace lines or fittings if leaks cannot be stopped (para 2-57)
2-133
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