TM-9-2320-366-10-1 MTV Operator Manual M1083 Series - Volume 1 Download
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TM 9-2320-366-10-1 b. Heater/Defrost Controls. Figure 2-9 shows all heater controls on the center console. Figure 2-9. Heater/Defrost Controls 1. Fan Switch. Four-position switch used to control operation and speed of heater fan. 2. HEAT Control. Controls temperature of air that heats cab interior and defrosts windshield. Temperature of air increases when control is pulled. 3. VENT Control. Controls flow of outside air to cab. When control is pulled, fresh air is vented into cab. 4. DEFR (Defrost) Control. Controls windshield defrosting. Air is routed from heater to defrost windshield when control is pulled. 2-17