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 TM 9-2320-303-24-1
THEORY OF OPERATION - CONTINUED
0003 00
AIR CONDITIONING SYSTEM
0003 00
a.
The air conditioning unit is part of the heater and is mounted under the glove compartment. It is a single unit con-
sisting of heater core, air conditioning evaporator coil, blower motor, control valves, and air ducts.
b.
The system is turned on by the mode control lever and the four-speed blower switch, which also controls flow rate.
c.
An even cab temperature is maintained by controlling the coolant flow through the heater core, or refrigerant flow
through the evaporator coil.
THERMOSTATIC
SWITCH
HEATER
EXPANSION
CORE
VALVE
EVAPORATOR
COIL
RECEIVER
DRYER
0003 00-8
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