Farley`s Dodge Diplomat Forum

Forum Index => The Garage => Topic started by: spike on September 21, 2008, 21:49:25

Title: heater core removal
Post by: spike on September 21, 2008, 21:49:25
ok guys here it is. the dreaded heater core tetorial :p NOTE: this is for cars without A/C!

while you let the coolant drain you can tear into the interior.
i started with taking the kick panel off. after thats off you can take out the two 7/16 bolts (top one holds the bottom of the dash in and the bottom one has the ground wire for the blower motor)
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics049.jpg)

this nut has to be takin off i bielive its 7/16 but mine came off with my fingers as i never tightend it
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics051.jpg)

gotta take the dash bezel off to get at some hiddin bolts
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics053.jpg)

after thats off theres a 5/16 bolt above the ashtray
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics055.jpg)

theres two or three screws that hold the rightside of the drivers bottom half on, take them out and then remove the mirror remote.
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics054.jpg)

pull the three 5/16 bolts out of the bottom of the dash under the glove box
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics058.jpg)

theres two philips screws under the dash at about the middle that hold the two halfs together, as you can see i use one screw as a ground
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics057.jpg)

i pulled the glove box out for better access to the wires
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics060.jpg)

gotta pull both these bolts out. the black one holds the top of the dash on and the silver one holds the bottom half
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics056.jpg)

gotta pull the whole top of the dash off. theres four 5/16 bolts along the windshield in the defrost vents, a 5/16 bolt by the headlight switch, and a 5/16 bolt by the radio
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics061.jpg)
Title: Re: heater core removal
Post by: spike on September 21, 2008, 22:07:53
after the top half is off, there is two 5/16 bolts in the top of the vents, these are the last two bolts and the bottom half will come off (i had to move mine to the side cuz of the wires that go into my ashtray)
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics062.jpg)

after the bottom is off you can start disconnecting vacumm hoses (i mainly took these pics so i can remember what color goes where :D)
this pic you can see there was a valve of some sort here, theres two wires goin to it so i had to remove it to remove the heater box, again, two 5/16 bolts
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics064.jpg)
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics065.jpg)
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics066.jpg)

also found the mouse nest, the brace has to be takin off also, you can just remove the top nut (7/16)
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics050.jpg)

this brace also has to come off. two 3/8 nuts
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics063.jpg)

there is four studs that go through the firewall with 7/16 nuts, a deep socket is required. theres 1 behind the wash bottle, 1 by the exhaust manifold, 1 by the voltage regulator, and 1 by the heater hose.

after those are off the heater box can be removed from the car, look at all the room, i was thinkin of leavin it out lol
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics071.jpg)

here is the top of the heater box, its hard to see but i dotted the heads of all 19 5/16 bolts so you can see where they are located
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics067.jpg)

then you gotta remove this dealy thing that controls the door inside
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics074.jpg)

and under that is this washer that has to come off
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics073.jpg)

heres the only pic i took with the top off (thought i had another one but i guess i forgot). here it is with the heater core out and i did myself a favor and removed the a/c core thing
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics070.jpg)

to remove the heater core from the box theres just one 5/16 bolt that holds it on and it just slides out
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics072.jpg)

then i got pissed, the new heater core didnt fit, but luckily mine wasnt shot (coolant was leaking from the hoses and inside the car :doh
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics068.jpg)
(http://i150.photobucket.com/albums/s115/spikekid999/heater%20core/pics069.jpg)
Title: Re: heater core removal
Post by: spike on September 21, 2008, 22:11:35
and to install you just work backwards to what you did. i hope this helps
Title: Re: heater core removal
Post by: Ice Cold on September 22, 2008, 15:28:04
Never had to do one [knocks on wood. :whist:]
It really doesn't look like a fun job.
Title: Re: heater core removal
Post by: spike on September 22, 2008, 15:32:38
it wasnt that fun of a job, esspecially since mine was fine the whole time, but i guess it wasnt that bad since i already knew where everything was since i had the entire dash out after i got it to switch it to the white one
Title: Re: heater core removal
Post by: Reggie on September 22, 2008, 15:42:37
Great pics Spike! :thumb:  You mean to tell me that after all of that work - that sucker wouldn't fit in there??  :pound: It does look like it's wider....  - RR
Title: Re: heater core removal
Post by: spike on September 22, 2008, 19:12:09
yup the core itself was too big and the tubes were to tall :rant: :rant:


i was puttin it back together today and that was more of a [Edited by Farley's] puttin it in then it was takin it out. and the thing where all the vacumm hoses go into started breakin apart on me so im siliconin it back together,,,, in other words, i aint doin this again
Title: Re: heater core removal
Post by: CTDMike on September 22, 2008, 19:53:34
Great pics...the heater cores are not fun in our cars. Same goes for Ram truck, new & old style & even old style stuff (my '71 Charger springs to mind...I popped the core in it  :doh: )
Changing out the core itself is simple, hard part is getting the whole heater box assembly out & all the maneuvering, vacuum hoses.
Title: Re: heater core removal
Post by: spike on September 22, 2008, 21:37:29
it actually wasnt bad taking the heater box out, its just putting the heater box back in thats the hard part. cuz you gotta run vacuum hoses and wireing behind it kinda, then you gotta try lineing up the 4 studs, the heater core tubes, and the drain deal blindly since you cant exactly see behind the heater box to line it all up with the holes in the firewall
Title: Re: heater core removal
Post by: Reggie on September 23, 2008, 10:10:34
it actually wasnt bad taking the heater box out, its just putting the heater box back in thats the hard part. cuz you gotta run vacuum hoses and wireing behind it kinda, then you gotta try lineing up the 4 studs, the heater core tubes, and the drain deal blindly since you cant exactly see behind the heater box to line it all up with the holes in the firewall

You could tie a nylon string to each bolt and feed the string through each bolt hole.  It would be better with a buddy to help line it up. - RR
Title: Re: heater core removal
Post by: Reggie on September 23, 2008, 12:38:00
yup the core itself was too big and the tubes were to tall :rant: :rant:

What was the part number on the box?  I wonder if they gave you the wrong part or are they selling the wrong cores as the correct replacement parts...??  - RR
Title: Re: heater core removal
Post by: spike on September 23, 2008, 12:53:59
not sure i was so pissed at that point for doin all that work and finding out it was fine and then that it didnt fit i just put it back in the box and threw it in the dart to return.
Title: Re: heater core removal
Post by: Zach on March 31, 2009, 20:02:22
I know this is a old post and topic,  but I just used this tutorial and it took me all of 45 minutes to get everything out.. You hit the head of the nail square on  :thumb:  you were even right down to the number of bolts  :brow:  :cool:  8)  :p  :biggrin:  This deserves to be in the library if it isn't already :D
Title: Re: heater core removal
Post by: Reggie on March 31, 2009, 20:16:30
I know this is a old post and topic,  but I just used this tutorial and it took me all of 45 minutes to get everything out.. You hit the head of the nail square on  :thumb:  you were even right down to the number of bolts  :brow:  :cool:  8)  :p  :biggrin:  This deserves to be in the library if it isn't already :D

Yeah, I know.  Excellent thread posted by Spike. :worship:  I've been dragging my feet of late.   :roll: :D - RR
Title: Re: heater core removal
Post by: spike on March 31, 2009, 20:17:29
glad it helped

now start liftin your feet reggie n update the library :p
Title: Re: heater core removal
Post by: Barkfin on July 29, 2017, 14:19:03
Hi guys -
Now it's 2017 and the photos don't work any more, any way to update that?
Title: Re: heater core removal
Post by: Ice Cold on July 29, 2017, 15:03:34
Hi guys -
Now it's 2017 and the photos don't work any more, any way to update that?
It's Photo-Fark-It.
They want money now or no pics from them.
Title: Re: heater core removal
Post by: Barkfin on July 31, 2017, 00:29:58
Ok here's what I did. My heater hot/cold slider had seized up, so I pulled it out of the dash and discovered that the adjuster cable was seized solid.
Also, it got kinked over from pushing too hard towards "cold" on the left. Sigh...  :whist:

So I grabbed it with pliers and was working it in & out with some tri-lube to try to get some mobility, but it wound up breaking. Ruined.

Anyway I heard there was an '85 Caravelle at the junkyard, so I went there and surprise! All the same heater control guts in the dash.
So I goofed around a couple hours - got me the replacement cable, that was nice - and eventually yanked out the whole heater core box and everything.
It's not that hard a job! Just takes awhile.

So my question for you guys: I checked on Rockauto.com and lined up some parts.
APDI 9010169 heater core $49.47 Cdn,
VDO PM247 blower motor $48.22 Cdn,
Roadmax C0046 1.75" lower rad hose for the 3-core truck radiator I found $4.51 Cdn.
Postage $16.15 to my place, total cost $118.35 Cdn.

This would give me a new heater core, a new blower, plus I'm going to lube up that slider cable with some lithium + graphite I suppose.
Would you blow $120 to refresh the heater on your car, even if the old one isn't necessarily broken yet?

I had a heater core blow once on a Challenger I used to have (terrible car), it had been 20 years old and now this Old Blue is up to 30 years old. I'm thinking it's possibly coming due.

Opinions .... ?

Plus maybe I'll post pics of the teardown / reassembly.
Title: Re: heater core removal
Post by: 80 Lebaron Coupe on July 31, 2017, 07:10:55
If it has AC, I would replace the evaporator core while your in there.
one tiny pin hole can leak all your Freon out.
Title: Re: heater core removal
Post by: Mike on July 31, 2017, 07:23:13
Has anyone done a heater core lately? THe last few people that did it the heater core didn't fit so well.
Title: Re: heater core removal
Post by: MarkM on July 31, 2017, 17:50:10
Has anyone done a heater core lately? THe last few people that did it the heater core didn't fit so well.

Per this forum, there is only one manufacturer of heater core for these cars and they're using the wrong dimensions.  I pulled mine out and had it recored at a radiator shop.  Didn't even mess with that offshore [Edited by Farley's].
Title: Re: heater core removal
Post by: Barkfin on August 01, 2017, 10:35:46
Hmm, really?
Maybe I should harvest that stuff from the junkyard then, I just dismantled it & left the pieces.
It was amazing to me, the 32 year old fan motor still spins freely. I was thinking "man, the new fan motors don't seem to last like this".
What do you guys think, maybe I should get my junkyard 3 core rad re-cored while I'm at it... ?
Title: Re: heater core removal
Post by: MarkM on August 01, 2017, 14:05:25
Hmm, really?
Maybe I should harvest that stuff from the junkyard then, I just dismantled it & left the pieces.
It was amazing to me, the 32 year old fan motor still spins freely. I was thinking "man, the new fan motors don't seem to last like this".
What do you guys think, maybe I should get my junkyard 3 core rad re-cored while I'm at it... ?

Getting the radiator re-cored will be more than the cost of a replacement radiator.  Only reason why I did it with the heater core is because there is no replacement that would fit.  I think I paid $250 to have it done.

If you need a radiator then get yourself a Champion CC374.  You'll need to make a bracket on the driver's side to get it to fit, but from what you've posted in other threads it should be a cakewalk for you.  The radiator is a three core aluminum one and I run it in mine.  Cooled so well I kept it when I swapped in the big block.
Title: Re: heater core removal
Post by: Ice Cold on August 01, 2017, 16:27:11
Per this forum, there is only one manufacturer of heater core for these cars and they're using the wrong dimensions.  I pulled mine out and had it recored at a radiator shop.  Didn't even mess with that offshore [Edited by Farley's].
This, just re core as the aftermarket 'all most fits', which is no good.
 
Title: Re: heater core removal
Post by: lsm360 on August 01, 2017, 16:56:17
Real PITA. All the manufacturers list it as for our cars, and they are too big. I had my dash torn apart only to find the core was too big. I decided to modify my HVAC box instead, which was a PITA. Wish I had known going in. I've searched for a NOS one with no luck.
Title: Re: heater core removal
Post by: lsm360 on August 01, 2017, 16:57:06
This, just re core as the aftermarket 'all most fits', which is no good.
 
Can they even get cores for these anymore?
Title: Re: heater core removal
Post by: Ice Cold on August 01, 2017, 17:26:42
Can they even get cores for these anymore?
They re core rads, so why not?
Title: Re: heater core removal
Post by: Mike on August 01, 2017, 18:08:43
Per this forum, there is only one manufacturer of heater core for these cars and they're using the wrong dimensions.  I pulled mine out and had it recored at a radiator shop.  Didn't even mess with that offshore [Edited by Farley's].

I had to do the same with a GM one a few years back. Went thru a couple new heater cores and they were all junk that were no where near fitting.

For the rad,  I got the one for my truck re-cored because it's in your face when you open the hood and a plastic one would stick out.. With the Chrysler I dunno.... same GM as the heater core it's replacement rad is plastic but looks identical to stock. The truck one was anything but. maybe the car ones look better?
Title: Re: heater core removal
Post by: MarkM on August 01, 2017, 18:39:23
Can they even get cores for these anymore?

As of three years ago they could.  I took it to a specialty radiator shop.
Title: Re: heater core removal
Post by: Barkfin on August 02, 2017, 00:59:54
These are all brass coolers so I guess should be recore-able.

Title: Re: heater core removal
Post by: lsm360 on August 02, 2017, 12:38:13
They re core rads, so why not?
If they aren't making new ones that fit, maybe they don't have the cores, I don't know. I know the local radiator shop told me they can't get the cores anymore for AHB Radiators, only civis.
Title: Re: heater core removal
Post by: Mike on August 02, 2017, 17:34:10
It shouldn't be a problem getting a heater core done, the core itself is very universal and worst case can be cut to height and width. Thickness is another story.