Newby question here!  I've read through the shop manual and as many threads as I could find on here, but I'm still stumped on exactly how to remove the interior plastic Heater/AC box from my 64 SDV in order to replace the mode door vacuum actuator and heater core.  I think I've done everything as indicated, but I can pull so hard on it that it moves my body towards it and it isn't budging.  I don't want to break anything, so any help/photos/advice on what I'm missing would be appreciated.  Here is what I've done:

  • Disconnected all vacuum lines and electrical connections
  • Disconnected the defroster cable
  • Disconnected all vent tubes
  • Completely loosened the huge "hose clamp" on the big rubber seal on the far right that connects to the evaporator
  • Removed the front plastic "distribution box" that connects to the dash vents
  • Under the hood - I have removed speed nuts from 6 studs around the sides and bottom of the housing.  I have also removed the hoses from the heater core.  This is all I have done under the hood - is there anything else required, such as removal of any part of the blower housing, or part where the steamboat switch is located?
  • Finally, I am a bit confused about the floor vent.  The service note 65 (if memory is correct) states removal of two screws that hold it.  I removed 4 that apparently held on that air distribution tube (that's how I got it off), and then after that was off, the only other thing I could find were a screw above and below the left side of the mode door, so I removed these, but it didn't seem to have any impact.  The manual says to pull back the carpet around the lower vent and I have pulled it back a bit to the point where it turns from plastic to metal, but couldn't really see anything down there, perhaps I need to look closer?

When I tug on it, there is a very tiny amount of movement, but the force required to make that happen seems to be approaching reckless and I'm concerned I may break something if I just try to muscle it.  The floor vent assembly is still there, and I'm guessing I've loosened any screws required so it will slip out of there when it's free? Regardless, the amount of pulling force I was using probably would have snapped it off if that was the only thing holding it, so I took a breather and came here for help!  I'm sure there's something I'm overlooking, as everything I've read makes it seem like it should just pull right on out. 

Thanks in advance, and I'm excited to now be a part of this wonderful community!

- Travis

Manteca, CA

Views: 114

Reply to This

Replies to This Discussion

Sure something else needs to be removed based on your description 

Only advice I can give not having done that job yet —but due to do it very soon myself 

A post by - Clovis on here could be very informative regarding restoring the job you are doing if you have not seen that yet 

Stay safe 

My best guess is the blower box should come out under the hood 

Remove the blower box. You will want to change the vacuum motor in there also. Remember, in for a penny, in for a pound.  Dont bother separating the short duct from the blower case to the evap box. 

You may find another bolt or nut holding the inside case in place.

The J shaped heater duct needs to come out. (inside the car) There are 2 screw that go up (vertical) to the  heater box. Pull the carpet back to see the separation joint. There are 2 screws at the edges. 

The big seal on the right wall needs to be cut. Cut out the very aft section, so the duct assembly can be pulled straight back.  You can use black RTV or tape to reseal it.   That duct never just falls out on removal. That happens when you are trying to install it by yourself. 

The studs will hang up, so be cautious and slow.  When installing, do not be tempted to bend the heater core tubes to fit through the fire wall. You will cause a leak. 

Thanks to all for the good advice and explanations. I’m going to get back on it tomorrow and will update with my progress. I’ll remove the blower box and see what all I find. Good idea to replace what I can while I’m in there as this is all a job I’m not eager to do again soon!

Travis

 I want to know ( from you or others ) how you will be dealing with the hood hinge that is so very close to the blower motor box area 

I do think the blower box can be removed with the hinge in place but not 100% sure myself 

The manual indicates removal of the hinge  if I am not mistaken 

Removing the hinge ( if needed ) and realigning the hood is not something I am looking forward to doing needing three people to do it right and the possibility of damaging paint 

That answer will help me to get to doing the same job you are now doing as I have all the parts needed for a while now 

Stay Safe 

I’ll try this without good removal and let you know the results! I’ll take a few photos too if there are any tips/tricks I figure out.
Hood* removal ... couldn’t find if it was possible to edit a reply after I saw my typo!

It is possible to edit a reply. Let me see it I can use it here to capture a screenshot.

Yep. Here you go:

You will find that when you do the editing you will be correcting the original thread but the post that goes to the dashboard page will not be changed at all which is a bit odd 

Enjoy and be Safe 

Kurt, is correct. You can edit replies but note you have 15 minutes to do edits. After that you would need to delete and re-post. You can edit a top the main topic discussion post that you created at any time.

Awesome! Thanks guys for the help!

I never remove the hood hinge. If the AC doesnt work, disconnect the AC line from the compressor to get the line out of the way.  Or move the compressor to the right fender. 

RSS

Photos

  • Add Photos
  • View All

Forum

Locating radial tires for a stock 64 convert rim

Started by Tony and Ginny 429 in 1963/64 Cadillac Specific Discussion. Last reply by Tony and Ginny 429 10 hours ago. 2 Replies

Did some looking around to see where i could find some new 265 75r 15  radial tires for the 64 convert The current radial I have on the car I was  very surprised to see the size has become a problem…Continue

Tags: stock, rim, 64, a, tires

vacuum canister

Started by Walt Timmerman in General Discussion. Last reply by Jason Edge 11 hours ago. 2 Replies

what is the vacuum canister for that is behind the drivers front fender?After removing my fender I see its got a hole in the top but nothing is hooked to it and no line is laying there.Any help would…Continue

Where is the a/c evaporator box drain

Started by Tosh Dickenson in 1963/64 Cadillac Specific Discussion. Last reply by Tony and Ginny 429 13 hours ago. 1 Reply

I can't spot the traditional evaporator box drain tube on my '64 Deville.  I don't like how the water runs down the body line.  Is there an integrated drain tube?  If not, has anybody added…Continue

front end pieces.

Started by Walt Timmerman in Wanted to Buy 13 hours ago. 0 Replies

looking for LH drivers side boomerag piece, middle piece for the grille, both braces on the back of the grille and the lower end of the bumper on the right side. My car was hit in the front end. Its…Continue

Blog Posts

Electrical

Posted by Anthony Boles on August 8, 2020 at 5:46pm 5 Comments

My 1964 Cadillac electrical system is running around 17 volt which is to high,the alternator, battery and the voltage regulator was replaced but the voltage is still to high, could it be the pig tail that plugs into the voltage regulator. 

63 Caddy Horn

Posted by Robert Alan Shannon on May 27, 2020 at 9:25am 10 Comments

 Just noticed a 1963  Caddy trumpet horn on Ebay. No part # given but some of his other items are 1963 specific, just throwin this out there, I have no connection to this listing .

Wiring connection help.

Posted by Jimmy Davis on May 24, 2020 at 9:15pm 2 Comments

Can someone help me figure where these connections go? I have a 64 60 special if it matters.…



Continue

Wood grain finally done.

Posted by Jimmy Davis on May 20, 2020 at 4:57pm 3 Comments

After years of wanting to, I finally redid my wood dash paneling on my 64 60s. Not too hard to do either.…

Continue

Videos

  • Add Videos
  • View All

© 2020   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service