Heater Core

As of February I was ready to start putting the engine compartment back together. I just received new heater hoses from LMC and decided to check the heater core before installing. I removed heater box cover and repainted but the core did not want to come out and I couldn�t find any bolts or fasteners to remove.

Not knowing how to remove core I decided to test it in place. I connected the old hoses to the core, plugged one of the free ends and connected the other free end to a regulator set at 10 PSI. When I put air to this setup I heard hissing BAD HEATER CORE.

The old hose fittings have shut off valves on them, I thought they were closed and could be opened. I tried to open the valve but no water came out. I took the fitting off the manifold and it is corroded shut. One more thing to buy.

I never used the heater, I assumed it worked and the shutoffs in on the hose fitting were turned off. When I removed the heater box I discovered the core was loose from the mounting bracket. It appears that someone tried to pry the core out without removing box.

Wood grain heater box cover

Rust removed, painted and put back together.

Ebay heater box purchased for $35.00 which included shipping!

Cleaned up good heater core.

Heater box put together

Heater Box mounted in cab.

I had two covers that I airbrushed wood grain
Brown Wood Green Wood

Installed with lengthened wires and quick connects for inline fuse that will replace fusible link I broke. The heater hoses get buried at the fire wall by the battery holder.

Page 1 - F100 General
Page 2 - Brake Upgrade
Page 3 - Air Brush (Rock Chip Repair)
Page 4 - Core Heater
Page 5 � Hood Trim
Page 6 - Projects -- Other Upgrades and Way Future