TM 9-2320-387-24-l
l-29. Ml 114 AIR-CONDITIONING SYSTEM OPERATION
The air-conditioning system covered in this manual applies only to the Ml114 vehicle and consists of the
following major components:
0 A
0 B
0 C
0 D
0 E
0 F
0 G
DISCHARGE LINE - High-pressure gas is carried through the discharge line from the compressor to
the condenser.
COMPRESSOR - Inside the compressor, low-pressure gas refrigerant is compressed into a
high-pressure gas that is pushed into the condenser by the compressor.
SUCTION LINE - Refrigerant, in low-pressure gas form, is drawn from the evaporator by the
suction action of the compressor.
EXPANSION VALVE - High-pressure liquid refrigerant enters a nonadjustable expansion valve
where the refrigerant is formed into a liquid spray.
EVAPORATOR - Refrigerant enters evaporator as a liquid spray. It absorbs heat from the air in
the crew compartment and vaporizes into a low-pressure gas.
LIQUID LINE - High-pressure liquid refrigerant is carried back to the evaporator by the liquid
line to repeat the evaporation/condensation cycle.
CONDENSER - Refrigerant enters the condenser as a high-pressure gas. When condensed, it gives
up its heat to the outside air and becomes a high-pressure liquid.
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COMPRESSOR
LOW-PRESSURE GAS
-
HIGH-PRESSURE GAS
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HIGH-PRESSURE LIQUID
I
REAR
FRONT
EVAPORATOR
AND
HEATER
CORE
CONDENSER
l-39