1980 - 1986 Bullnose F100, F150 & Larger F-Series TrucksDiscuss the Early Eighties Bullnose Ford Truck
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Long time no talk!?! I have a problem? My heater core off of my 1983 Ford half ton is starting to leak antifreeze because I can smell a distinct odor coming from my defrost vents? I'd like to replace it myself with a new one!?! Can anyone tell me the steps to take in order to replace it? Does anyone know of a website that has diagrams or explains in detail how to replace a heater core? Thank-you!!
We need to know if the truck has A/C or if you got a high output heater.
If you got a standard heater without A/C it's pretty simple to do.
1. Disconect battery ground.
2. Disconect temperature door cable
3. Disconect wires from blower resistor and motor.
4. Drain Radiator enough to remove heater hoses. Be a good time to drain and flush cooling system.
5. From inside, (you can remove the dash pad, and glove box, for easier clearence) remove the nuts holding the heater case. about 3 or 4 of them.
6. remove the screw on the left side of the heater case that holds it to the firewall. Remove the heater case.
7. Remove the several screws that hold the heater case and the core frame and firewall seal together. about 10 in all more or less.
8. install in reverse order. making sure to adjust the heater control cables, and filling the radiator and checking for leaks.
I have a high output heater WITHOUT A/C!! Thanks for helping me out here!! You said that you have heater diagrams in your gallery? Where exactly in your gallery do I find them? How do I get to your gallery? Thank-you!!
Actually, a High-Output heater is exactly the same as a standard heater. Only AC and Comfort Vent heater trucks have it inside the cab. Basicly if you only have heat and defrost, your heater core is outside the cab. If you have dash vents, your heater core is inside.
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