73 A/C & Heater Cote

Legoslen · Mar 25, 2020

It is time to pull the A/C and Heater Core on my 73 Rallye Charger. Need to replace all the seals etc. this is a running/ driving car. Any suggestions on how to do this or where to start? Not even sure how the box is mounted. Tips to keep in mind so I don’t destroy anything etc...
Thanks

'68 Charger · Mar 25, 2020

I'll answer the removal part.

As for the box removal, the main secure points are the bolt/nuts thru the firewall (4 or 5) and the hanging strap inside. Obviously you'll need to remove your heater hoses, disconnect the A/C lines at the firewall (do this before removing the firewall nuts) and your heater blower fan motor. And inside, your AC heater control and wiring to the box. A good ideal is to remove your pass. bucket seat or bench seat to give you better working room to drop the AC box.

I may have left out some small details but that's the jist of it.

Good luck.

Nacho-RT74 · Mar 26, 2020

actually you can keep the blower in place ( will come out attached with box ) and I think seats removal is not a need, but remove glovebox liner is the best to get room, specially for the internal bracket/strap.

of course as mentioned, all hoses conections on engine bay and also the blower cooling duct allong with the drain hose for condensation.

there is a bracket hold by an hex screw which helps to keep one of the refrigerant gas nipples in place. Loose that bracket too after remove the lines. It just helps to not twist the AC line when loosing or removing it.

wiring is easy, just disconect the lines arriving to the resistor unit inside, and of course the blower on engine bay ( ground wire and hot wire )

Vacuum lines can be some tricky. The plug is between A/C control and pedal brake area. Then you'll ned to gently pull it out from underdash

Doug Larsson · Mar 27, 2020

I'll see if I can find the link to a website that sells the gasket kit. I did mine 3 years ago take lots of pictures of the hoses just in case they come off when taking it out of the car. Like they said above take the passenger seat out it makes it easier to remove. Be real gentle taking it out it's old and can be brittle in some areas . If you need any help just message me instead of asking me on here it will be easier.
Found it.
https://www.detroitmuscletechnologi...ater-box-rebuild-restoration-seal-gasket-kit/

'68 Charger · Mar 27, 2020

Nacho-RT74 said:
.....actually you can keep the blower in place ( will come out attached with box ).....

Oops, I was thinking of a 1968-70 B Body box when I wrote that.

Legoslen · Mar 28, 2020

Wow thanks for all the info and pictures!! This is a great help!

Doug Larsson · Mar 28, 2020

Legoslen said:
Wow thanks for all the info and pictures!! This is a great help!

If you need any help message me.

azmoparboy · Mar 29, 2020

Hi,

I’ve been down the same path as you are heading, doing work on my 1973 Charger. This website is so good at all of the work that you’ll be doing on your Charger. The guys that have posted for you here have a lot of experience. I’ve learned so much from them in the past. You’ve made a very good decision in joining and posting your question.

When I started my Charger I know very little about starting a car restoration. The only thing that I had that was beneficial to my new hobby was at the young age of 20 years old I joined the Air Force and became an aircraft mechanic. The Air Force taught me with, on the job training and maintenance manuals. I use this website as my, on the job trainer and I purchased a Chrysler body chassis service manual to further sharpen my mechanic skills, the best tool in my toolbox, at $75.00 is my first step into a job that I’ve never done.

Here is a picture of the manual that I purchase off of EBay. I wish you success, I know you’ll do just fine.

AZMOPARBOY

rrTor-Red · Mar 31, 2020

Legoslen said:
It is time to pull the A/C and Heater Core on my 73 Rallye Charger. Need to replace all the seals etc. this is a running/ driving car. Any suggestions on how to do this or where to start? Not even sure how the box is mounted. Tips to keep in mind so I don’t destroy anything etc...
Thanks

Word of advice, Lego...Take LOTS of pictures and label things!!! Sure, Jim's gasket kit has some pictures but as more insurance, take your own. Here are some of mine

Bbodycomeback · Apr 8, 2020

i am doing the same on my 72 se .i have my interior completed utted and box out with plenty of pictures of a/c heater box. one thing to take note of is your vacum hoses are clor coated just like your wires and it helps with putting them back in the correct locations as you refer to the pictures you take any questions pm me

Rory Patrone · Dec 22, 2023

Legoslen said:
It is time to pull the A/C and Heater Core on my 73 Rallye Charger. Need to replace all the seals etc. this is a running/ driving car. Any suggestions on how to do this or where to start? Not even sure how the box is mounted. Tips to keep in mind so I don’t destroy anything etc...
Thanks

Hello my name is Rory. I see that you are also working on a AC system on a 1973 Dodge Charger. Please text me and I'll be glad to help. 254-247-9821

Rory Patrone · Dec 22, 2023

Doug Larsson said:
If you need any help message me.

I need a little help in the same area. I have a 1973 Dodge Charger with out AC. I removed a complete AC system from another car that has AC. My only problem is, the vent system that goes to the defroster. I'm not sure were it mounts to. I now that the top of the vent mounts to dash. Where I'm confused is where does the bottom of the ve connects to the heater box. Please text me at 254-247-9821 thanks

Doug Larsson · Dec 23, 2023

I sent you some pics.

73 A/C & Heater Cote

Legoslen

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'68 Charger

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Nacho-RT74

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Doug Larsson

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'68 Charger

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Legoslen

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Doug Larsson

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azmoparboy

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rrTor-Red

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Bbodycomeback

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Rory Patrone

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Rory Patrone

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Doug Larsson

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