rear plenum air doors C3
Thread Starter
4th Gear
Joined: Sep 2012
Posts: 4
Likes: 0
rear plenum air doors C3
does anyone know how to remove the rear plenum air doors 1972 c3? Mid America book.... 1 Asm F23 I would like to get a new seal kit ,but cant figure out how to remove the old one. be gentle new to corvettes and forums
Instructor
Joined: Aug 2012
Posts: 109
Likes: 8
From: St.Augustine FL
there are six philips screws recessed in the door flaps/if you can get back there with a droplight push the doors up slightly and you will see them.there are also three philips screws that hold the vacum actuater on the end of the door flapper panels.with these screws removed the whole assembly wiil drop right out.then you can start cleanup/paint and new seal kit.this is also called astro ventilation as well. hope this helps.
Instructor
Joined: Dec 2009
Posts: 107
Likes: 0
when I did mine I had the entire interior out because I was restoring my vett. in your case I would probably remove one of the seats for easier access. you will also have to remove the rear window storage shelf. when working on corvettes everything is close and tight squeeze this will be no different. best bet is to get in the storage compartment on you back and see what screws you will need tools for. the entire damper will come out as a unit and can be further disassembled later if you wish. my foam seals turned into a tar like goo after 40 years.
I sandblasted all the metal parts and repainted and resealed. the damper came out as good as new.
I sandblasted all the metal parts and repainted and resealed. the damper came out as good as new.
Last edited by 69ttop; Oct 2, 2012 at 09:15 PM.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Coupe/convertible, AC/non-AC are likely to be different. Do you have the assembly instruction manual (AIM)? The AIM shows the installation and is helpful when taking things apart.
Team Owner
Joined: Sep 2006
Posts: 31,283
Likes: 4,373
From: Westminster Maryland
Hi nh,
Mike's usually right in his advice about buying the AIM.
I realized after a moment that you had quoted the AIM sheet for the plenum door, so you have it.
What makes the drawing confusing is that only 1 of the 6 screws that H73 and 69t mention is shown!!!! It's item #15. All 6 of the J-nuts the screws fasten to are shown though (items #22 & 23) so you'll know where to look for the other screws.
On occasion the AIM lets us down!
Good Luck!
Regards,
Alan
Mike's usually right in his advice about buying the AIM.
I realized after a moment that you had quoted the AIM sheet for the plenum door, so you have it.
What makes the drawing confusing is that only 1 of the 6 screws that H73 and 69t mention is shown!!!! It's item #15. All 6 of the J-nuts the screws fasten to are shown though (items #22 & 23) so you'll know where to look for the other screws.
On occasion the AIM lets us down!
Good Luck!
Regards,
Alan
Safety Car
Joined: Feb 2012
Posts: 4,705
Likes: 983
From: Orlando FL
I`m in the middle of restoring a 71 coupe, and I agree that it`s probably easier without a seat in there! I`d also add that if the seals on the flapper doors are shot, you`ll probably want to check the drain hoses on either end of the plenum too.
