TM 9-2320-260-20
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8-22. AIR COUPLINGS REPLACEMENT (Contd)
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c. Rear Air Couplings Removal (M813, M813A1, M815, M819)
NOTE
Left and right rear air couplings are removed basically the same.
1. Remove dummy coupling (10) and chain (9) from air coupling (11) and bracket (12).
2. Remove air coupling (11) and nipple (8) from valve (7).
3. Disconnect airline (1) from elbow (2).
4. Remove elbow (2) and coupling (3) from adapter (4).
5. Remove four locknuts (15), washers (14), screws (6), bracket (12), and plate (13) from frame (5).
Discard locknuts (15).
6. Remove valve (7) from elbow (16).
7. Remove elbow (16) from coupling (17).
8. Remove coupling (17) from adapter (4).
9. Remove nut (18), lockwasher (19), identification plate (20), and adapter (4) from frame (5). Discard
lockwasher (19).
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d. Rear Air Couplings Installation (M813, M813A1, M815, M819)
NOTE
Fittings must be cleaned and inspected for cracks and stripped
threads.
1.
Apply antiseize tape to male threads of elbows (2) and (16), adapter (4), coupling (17), and nipple (8).
Install adapter (4) and identification plate (20) on frame (5) with new lockwasher (19) and nut (18).
2.
Do not tighten nut (18) on left side of vehicle.
Install coupling (17) and elbow (16) on adapter (4).
3.
Install valve (7) and nipple (8) on elbow (16).
4.
Position plate (13) on frame (5) and install with two screws (6), washers (14), and new locknuts (15).
5.
Position bracket (12) on plate (13) and install with two screws (6). washers (14). and new
6.
locknuts (15). Ensure nipple (8) goes through bracket (12).
Install coupling (3) and elbow (2) on adapter (4).
7.
Connect air line (1) on elbow (2).
8.
Install air coupling (11) on nipple (8).
9.
Install dummy coupling (10) and chain (9) on air coupling (11) and bracket (12).
10.
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