TM9-4120-400-14
GENERAL SUPPORT MAINTENANCE INSTRUCTIONS
GENERAL.
6-1.
The only items restricted to general support maintenance level by the Maintenance Allocation Chart (MAC) are the
repair of replacement of insulation or lifting fittings on the housing, and replacement of the cabinet base.
However, general support maintenance may be called upon, at times, to perform any or all of the MAC items listed
for unit and direct support maintenance for rehabilitation or overhaul of an air conditioner.
HOUSING.
6-2.
a. Repair
b. Replacement
This task covers:
INITIAL SETUP
Equipment Condition
Tools
Disconnect power at power source.
Refrigeration Unit Service Tool Kit
General Safety Instructions
Torch Set
Materials/Parts
Insulation/Gasket
Adhesive remover is flammable and the vapors can be
explosive. Repeated or prolonged skin contact or
Adhesive Remover
inhalation of vapors can be toxic. Use in a well ventilated
area, wear gloves, and keep away from sparks or flame.
Adhesive
NOTE
Repairs are limited to rework of broken or cracked welds, straightening of bent or dented
sheet metal and replacement of handles, gaskets, insulation, and rivnuts and some small
sheet metal parts by drilling out rivets and installation of replacement parts.
REPAIR
1. Disassemble unit as necessary and make repair as indicated.
2. Minor dents and bent edges can be straightened using common sheet metal repair procedures.
3. Should touch up or refinishing be necessary, see TM 43-0139.