luisvillar

Hi guys, I am almost finishing a 3-1/2 years project on my 1984 Chevy C-10. After re-installing the a/c heater unit (the original from factory) I notice that while the control level is in max cold, still good part ofthis is blowing out to the floor, I thinkthe floorvent must be closed at max cold set. When I had the unit out I checked all the vacuum diaphragm and lines. Allworked ok. Does somebody knows which vent should be open and close at each diferent cycle? Or the vacuum diagramfor this unit?
Thank you for your help,
Luis