ARMY TM 9-4120-380-14
NAVY EE-000-BA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-21
4.44
ELECTRICAL BOX. This task covers inspection and repair.
INITIAL SETUP
Tools:
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Drill, electric, portable (Item 2, Appendix B)
Drill set, twist (Item 3, Appendix B)
Riveter blind hand (Item 4, Appendix B)
Goggles, industrial (Appendix C)
Equipment Conditions:
Disconnect input power to the air conditioner before performing any internal mantenance
Voltages used can KILL. Shutting the unit off at the control panel does not disconnect
unit power.
(1) Disconnect air conditioner input power at source; and
(2) Remove control box assembly (paragraph 4.27)
INSPECTION
a. Inspect mounting bracket (2) for missing rivets (1) Replace if missing (see fig. 4-35).
b. Inspect electrical box (5) for missing or damaged floating locknuts (4) or mussing rivets (3) Replace if missing or
damaged.
c. Inspect wire entry panel (7) for missing or damaged bushings (6, 8) Replace if missing or damaged.
REPAIR
NOTE
Repair consists of replacing rivets (1, 3), floating locknuts (4), mounting bracket (2) and
bushings (6, 8).
a. Floating Locknuts
(1) Remove two rivets (3) securing floating locknut (4)
(2) Remove floating locknut (4)
(3) Position new floating locknut (4) on electrical box (5)
(4) Install two rivets (3).
4-92
