VI HEATER MID l EFll0 I Ell 13 3 and heated air The defrost control knob must be The TEMPERATURE control lever operates the pushed in for the blended air to enter through the blend air door in the heater core housing At the full floor heat duct When the defrost control knob is pul left position all air is directed through the heater core led out completely all airflow will be directed through providing maximum heat flow At the full right posi the defroster hose and onto the windshield Any in be tion all air is directed around the heater core provid tween position of the defrost control divides the air ing unheated fresh air The temperature control lever flow between the defroster hose and the floor heat may be placed in any in between position to provide a duct blend of cool fresh outside air and heater air If additional airflow is required the blower motor However either the HEAT or DEF button must be should be operated at one of the two available speeds pressed before any air can enter the vehicle If additional airflow is required the blower motor should be operated at one of the three available Glicrnkaa Waganaar Truck speeds The OFF HEAT and DEF buttons fig 13 2 on the heater control panel operate a vacuum control switch which controls two vacuum motors When the OFF FRESH Am VEHTILATIUN button is pressed the vacuum switch shuts off vacuum to the air inlet door vacuum motor A spring cl Mad closes this door preventing any outside air from en tering the heater fig 13 4 When the HEAT button is pressed the air inlet The fresh air ventilating system has one air intake door is opened by the air inlet vacuum motor and air duct which directs fresh outside air into the heater will flow through the heat transition housing and out housing The vent door is cable controlled by the AIR of the floor heat distributor control knob on the heater and defroster control panel When the DEF button is pressed the vacuumswitch When the knob is pulled out fresh air enters the directs vacuum to the defrost vacuum motor which heater housing and is distributed through the floor closes the door to the floor heat distributor Airflow is outlet When the knob is pushed in no air will enter then directed through the defroster hoses onto the the vehicle The air intake duct is equipped with a windshield The air inlet door remains open to allow drainage hose fig 13 5 to prevent water from enter airflow through the heat transition housing ing the vehicle through the heater housing ossnosrsn nos uozztz V vacuum e sronacs 7 Moss A A TANK wss 4 7 Moss r Oo x GHUMMET V rsnomrvnzr AB E F j y nsrnosren yl uozzts gz BRACKET g VV ir 4 J 7 r V M U Q nzmusrzn x J J 7 nos a If W a ge A a r TUBE r rj r Wl W e i VK lr J T M to i s 2 1 2 moron BEEZBSJ T I i M tnn a I CZ ll 5 EAL lauren nun hgh r M Y R uzaran S nzsuosrsn H j N runs cone nmvan near 7 uousmo D sm BU R SFNNG near rnmsirion uousmo 2633 Hq 134 Ilunrand Mrostnr l Ii r k vIs4 n r Truck