mikewood869
Well-known Member
When looking at the thermostat on the ford 4500 (the tractors wiring harness is a C), I noticed on the 5 position key switch, the key switch has; heat, off, on, and crank, but doesn't have a heat-crank (the key won't turn to 9 o'clock). I need to re-look at the lines going from the thermostat. It looks like someone rigged the return line going to a "T" (from the injectors to the fuel tank). I can see smoke from the intake manifold and the thermostat glowing. It seems like the tractor would need to be cranking with the thermostat glowing (& smoking). Where does the fuel come from to supply to the thermostat? In the first picture with the hand, the hand is pointing to the line for the thermostat with one of the ends being for the return line for the fuel tank and one of the others being for the thermostat..