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Heater core replacement advise wanted

Posted By: Spacetrucking

Heater core replacement advise wanted - 03/24/08 07:10 PM

Hi, did a search but came up blank.
Looks like I'll need to replace my heater core soon,
slight leak on driver floor
( carpet is out, I can see the leak from the back of the heater box onto my floor board )
Anyone done it and what's involved?
Thanks much,
Hugh
Posted By: eastcoast

Re: Heater core replacement advise wanted - 03/24/08 11:40 PM

If ya got A/C its gonna be a pain, at least in my truck it is, to get to the heater core, you have to pull out the cooling unit as well, which means discharge, evac and recharge...nothing more than a trip and some added cost with 134a, but if you have R-12 its prolly gonna suck. i had a hell of a time finding someone to just take what little R-12 was left when i converted to 134a due to a leak, and since you're opening the system, you'll need o-rings and a new accumulator at least, i believe the ones they sell now will work with the old r-12...finding oil for the r12 system i dunno, hopefully your system is in good shape and the shop can just throw the old back in. Other than that its pretty straightforward, get a haynes manual and you should be good. remember to bleed the air from the system when yer done, also recommend flushing and replacing antifreeze and any old hoses while you have it apart with summer around the corner. Good luck!
Posted By: BROWNBAGG

Re: Heater core replacement advise wanted - 03/25/08 11:43 PM

you dont have to mess with the a/c but its a beech, suck it up. its behind the radio.
Posted By: missouriman

Re: Heater core replacement advise wanted - 03/26/08 12:24 AM

make sure that it is not a leaking hose that is running down inside!!!
Posted By: Spacetrucking

Re: Heater core replacement advise wanted - 03/26/08 01:55 PM

Thanks guys, good thing it's nearly spring!
Yes, a loose hose would be great, but I doubt it.
The clamps are on the engine side of the firewall, but I
will look into it.
Yes it has A/C <img src="/forums/images/graemlins/rolleyes.gif" alt="" />
Hugh
Posted By: KiwiCowboy

Re: Heater core replacement advise wanted - 03/26/08 04:49 PM

I pulled the entire dash out and that made it a lot easier. The extra time it took to do it was worth it to not have to fight and cuss trying to get the core out.

<img src="/forums/images/graemlins/kewl.gif" alt="" />
Posted By: 87Toy4x4

Re: Heater core replacement advise wanted - 03/26/08 06:03 PM

Quote
I pulled the entire dash out and that made it a lot easier. The extra time it took to do it was worth it to not have to fight and cuss trying to get the core out.

<img src="/forums/images/graemlins/kewl.gif" alt="" />


isn't this the only way to do it? thats how i did mine. not too bad, just time consuming. gear wrenches are your friend, especially the flex head ones.
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