A/C SYSTEM SERVICE
Leak Test, Recovery, Evacuation, Charging, A/C System Performance
Machine parked (TM 5-2420-231-10)
Refrigerant, Tetrafluoroethane, Technical
Front end loader raised with safety support strut
engaged (TM 5-2420-231-10)
Estimated Time to Complete
Contact with refrigerant can cause frostbite. Keep hands and face away to prevent
Protective face shield and gloves must always be worn when refrigerant lines are opened,
even if the gauges indicate system is empty.
Always use caution when disconnecting fittings. Slowly loosen the fitting in a well-
Do not smoke when servicing A/C or wherever refrigerant gas may be present.
Failure to follow these warnings may result in injury or death to personnel.
Replace receiver/dryer if one or more of the following conditions occurs before you purge
the A/C system:
A/C system has been previously opened for service.
A/C system contains too much air or moisture (as indicated by low refrigerant level).
A/C system has been opened for longer than 5 minutes.
A/C system has a large leak (such as a break in hose or line).