8
TM 5-3805-291-23-2
AIR CONDITIONING SYSTEM SERVICE
THIS WORK PACKAGE COVERS
Recovery, Evacuation, Charging
INITIAL SETUP
Personnel Required
Maintenance Level
Direct Support
MOS 52C, Utilities Equipment Repairer
Tools and Special Tools
Equipment Conditions
Tool kit, general mechanic's, automotive (Item 90,
Hood opened (TM 5-3805-291-10)
Machine parked on level ground (TM 5-3805-291-
Shop equipment, automotive maintenance and
10)
repair: field maintenance, basic, less power (Item
68, WP 0232 00)
Work tool lowered to ground (TM 5-3805-291-10)
Reclaimer, refrigerant R-134a (Item 60, WP 0232
Parking brake engaged (TM 5-3805-291-10)
00)
Materials/Parts
Wheels chocked
Oil, lubricating, refrigerant compressor: Synthetic
Battery disconnect switch in OFF position (TM 5-
Ester (Item 30, WP 0233 00)
3805-291-10)
Rag, wiping (Item 35, WP 0233 00)
Estimated Time to Complete Task
Tetrafluoroethane, technical (Refrigerant, R-134a)
2.0 hr
(Item 46, WP 0233 00)
RECOVERY
0222 00
WARN I N G
Take care to prevent refrigerant from touching your skin or eyes. Liquid refrigerant, when exposed to
air, quickly evaporates and will freeze skin or eye tissue. Use protective gloves and goggles. Serious
injury or blindness may result if you come in contact with liquid refrigerant.
Refrigerant R-134a air conditioning systems should not be pressure tested or leak tested with com-
pressed air. Combustible mixtures of air and R-134a may form, resulting in a fire or explosion, which
could cause injury or death to personnel.
DO NOT work in an area where refrigerant may contact an open flame or burning material such as a
cigarette. When refrigerant contacts extreme heat, refrigerant breaks down into poisonous phosgene
gas which, if breathed, causes severe respiratory irritation. DO NOT breathe fumes from an open
flame leak detector.
