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 TM 9-2320-303-24-2
AIR CONDITIONING SYSTEM REFRIGERANT (R-134A) MAINTENANCE - CONTINUED
0297 00
CHARGING - CONTINUED
c.
Start engine and run it at 1500 rpm. Set cab air conditioner controls at maximum cooling and fan speed; refrigerant
compressor must engage.
d.
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).
3.
Disconnect high side hose. With engine running, open low side and high side hose valves to recover refrigerant from
lines.
4.
Shut down engine.
5.
Leak test air conditioning system (WP 0218 00).
6.
Check operation of air conditioning system (TM 9-2320-303-10).
END OF WORK PACKAGE
0297 00-6
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