TM 9-4120-398-14
a. Replacement
This task covers
b. Repair
Tool kit, refrigeration SVC
Power OFF
FlexibIe ducts removed
Straightener, fin
(Item 3 Appendix B Section III)
Return duct adapter removed
Supply duct adapter removed
Evaporator access door open
Evaporator access panel removed
Evaporator plenum and blower removed
Heater removed
System discharged
WARNING
Air filter
Filter-drier
Voltages used can kill. Always
Brazing Alloy
disconnect power cord to air conditioner
(Items 2 and 3 Appendix E)
Flux, Brazing
before performing any internal
maintenance. Shutting unit off at its
(Item 6 Appendix E)
control panel does not disconnect
unit power.
(Item 9 Appendix E)
Rags
(Item 12 Appendix E)
Refrigerant -22
(Item 8 Appendix E)
Death or serious injury may result if personnel fail to observe safety precautions. Use great care to
avoid contact with liquid refrigerant or refrigerant gas being discharged under pressure. Sudden and
irreversible tissue damage can result from freezing. Wear thermal protective gloves and a face
protector or goggles in any situation where skin-eye contact is possible.
