I f I am remembering correctly that Heater (fresh air type) has to be pulled toward the back of the cab to get the inlet and outlet tubes of the heater core free from the fire wall. Once that is done then you should be free ( I think?). You may wnat to check the gromets around the heater core tubes as they may be stuck. Good luck


Brian Moore
1949 3100 5 window Deluxe
"Today is better than yesterday, but not as good as tomorrow"