CHARGING - CONTINUED - TM-9-2320-312-24-10918

TM 9-2320-312-24-1

AIR CONDITIONING SYSTEM MAINTENANCE - CONTINUED

0149 00

CHARGING - CONTINUED

Start engine and run it at 1500 rpm. Set cab air conditioner controls at maximum cooling and fan speed; refrigerant

compressor must engage.

If a charge did not enter system, place tank (bulk container) in upright position, then open LOW SIDE valve to

draw vapor into system; leave valve open until correct weight of refrigerant has entered system, then close low side

valve.

NOTE

If refrigerant is slow to enter system because of low outside temperatures, vaporization can be quickened by

placing refrigerant tank in a tub of warm water, no warmer than 125F (52C).

Disconnect high side hose. With engine running, open low side and high side hose valves to recover refrigerant from

lines.

Shut down engine.

WARNING

Refrigerant R-134a air conditioning systems should not be pressure tested or leak tested with compressed

air. Combustible mixtures of air and R-134a may form, resulting in a fire or explosion, which could cause

personnel injury or death.

Leak test air conditioning system (WP 0057 00).

Check operation of air conditioning system (TM 9-2320-312-10).

Lower cab (TM 9-2320-312-10).

END OF WORK PACKAGE

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