TM 9-4120-405-13&P
4-23. ADAPTER, SUPPLY AND RETURN DUCT (Figure 4-14).
This Task Covers:
a. Replace
b. Repair
Initial Setup:
Tools Required
Tool kit, general mechanics
Riveter, blind hand
Materials Required
Tape, duct, item 31, appendix F
Equipment Condition
Air conditioner off
Flexible supply duct removed, paragraph 4-13, if applicable
Adapter end cover removed, if applicable
REMOVAL.
a.
Supply Duct Adapter.
1. Remove four screws (1), four lockwashers (2), four flat washers (3), and two retainers (4).
2. Remove supply insulation blanket (5).
3. Remove four screws (6) and four lockwashers (7).
4. Remove supply duct adapter (8).
b.
Return Duct Adapter.
1. Remove return insulation blanket (1).
2. Remove six screws (2) and six lockwashers (3).
3. Remove two screws (4) and two lockwashers (5).
4. Remove return duct adapter (6).
5. Remove return air filter, refer to paragraph 4-32. Service or replace as required.
4-35
