heater core
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Senior User
Joined: Oct 2002
Posts: 188
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From: Macomb, IL
heater core
I need to replace the heater core in my '65 f100. Doesn't appear to be too tough a job but since I've never done it what are the steps involved?
I did remove the entire heater setup from a donor truck about a year ago. (I wanted the blower motor so I took the entire thing.) Is that the easiest starting point?
At least I caught a break and it went during the summer instead of when it is zero outside! I removed the hoses and bypassed the core so I can still drive it!
As always, thanks in advance!
I did remove the entire heater setup from a donor truck about a year ago. (I wanted the blower motor so I took the entire thing.) Is that the easiest starting point?
At least I caught a break and it went during the summer instead of when it is zero outside! I removed the hoses and bypassed the core so I can still drive it!
As always, thanks in advance!
Lead Driver
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
IMO removing the heater is 90 percent of the task. Once the heater has been removed, there are about 10-12 screws that secure the core housing to the heater. Pay attn. there should be some insulation, or something simular that shields the core in the housing. Also, there is an electrical fitting on the housing you want to take care of. Suggest cleaning contacts and if you have any dielectric grease dab some on contacts when you reconnect. Also, suggest taking time cleaning the duct boot which are becoming hard to find. I use a tire cleaner, it's foam and comes in tall aerosol can and seems to add little life to boot.
Anyhow, post any further questions you have.
good luck,
dave
Anyhow, post any further questions you have.
good luck,
dave
Postmaster
Joined: Apr 2002
Posts: 3,613
Likes: 6
From: Coal country
Dave is right on the money. I would add 2 things:
1. Make sure all the cables are disconnected before you pull the box off the firewall. When it comes, it will drop some on you, and may kink the cables. They kink real easy, and replacements aren't cheap.
2. Carefully note the location of all the flaps and the correct order you took them off. Installation is the exact reverse, but it can get a little confusing.
I would add that the rubber mounts for the core itself are probably deteriorated enough to rip when you take the box apart. If you are real careful, you may be able to re-use them.
I used some heat-resistant urethane-like foam stuff to carve out replacements. Eventually, it will start to disintegrate, so I'll have to get replacement mounts later.
1. Make sure all the cables are disconnected before you pull the box off the firewall. When it comes, it will drop some on you, and may kink the cables. They kink real easy, and replacements aren't cheap.
2. Carefully note the location of all the flaps and the correct order you took them off. Installation is the exact reverse, but it can get a little confusing.
I would add that the rubber mounts for the core itself are probably deteriorated enough to rip when you take the box apart. If you are real careful, you may be able to re-use them.
I used some heat-resistant urethane-like foam stuff to carve out replacements. Eventually, it will start to disintegrate, so I'll have to get replacement mounts later.
Last edited by banjopicker66; Jun 23, 2004 at 10:14 AM.
