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removing heater core

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Old Sep 6, 2006 | 12:25 PM
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removing heater core

I know this is a tired subject, but i m in the middle of replacing my heater core and i m wondering what the cable on top of the core panel does and how do i remove it for my purpose w/o breaking something i may need later.
92 bronco 351 e/b
 

Last edited by 92GASHOG; Sep 6, 2006 at 12:33 PM.
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Old Sep 6, 2006 | 03:14 PM
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you should be able to move the cable out of the way. not sure what the cable is for , probably one of the vents i would imagine.
 
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Old Sep 6, 2006 | 06:20 PM
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i think it's the one for the heat damper, meaning, it controls whether the air is coming THROUGH the heater core or not, thus, allowing you to have temperature control.
 
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Old Sep 7, 2006 | 08:16 PM
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Does anyone know if the core has a seal that keeps water from entering the cab thru the firewall?
 
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Old Sep 8, 2006 | 08:23 AM
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get a haynes manual, it should show you in more detail. the heater core is basicly a small radiator.
 
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Old Sep 8, 2006 | 10:46 AM
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There should be a foam seal with two holes in it that slide over the heater core tubes. If yours is gone, just get some foam, cut it to fit, cut the two holes, and once you have the core installed, slide it over the tubes before you attach the hoses. Or you can use strips of body sealer.
 
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Old Sep 8, 2006 | 11:23 AM
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Yes, the cable goes to the heater mix door from the temperature ****. Check the adjustment before you reassemble to be sure the door closes good for best air conditioning (important here in Texas). Expect one screw on the heater core box to be a challenge to get to but the project is super easy otherwise.
 
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Old Sep 8, 2006 | 11:29 AM
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As for the seal, when my core started leaking the coolant ran in front of the firewall, not in the cab. When I finished replacing the heater core I ran RTV around each core pipe where they protrude through the firewall laying it in between the hoses and firewall.
 
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