The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 01-05-2019, 07:25 PM   #1
tucsonjwt
Registered User
 
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,146
AC Vent Door Eye Loop

I am putting back together the interior of my 83 C20 with factory ac and I can't remember what this center loop feature is for. I think the silver colored u shaped hook with the teflon speed nuts attaches to the vacuum canister bracket, but I don't know if this center loop connects to anything. Can anyone identify the purpose and connection (if any) on the circled loop on the vent door? Thanks.
Attached Images
 
tucsonjwt is offline   Reply With Quote
Old 01-06-2019, 01:33 PM   #2
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 1,312
Re: AC Vent Door Eye Loop

A spare one of those on my shelf has a spring hanging off the circled thing and the vacuum pot connected to the silver U.
Dead Parrot is offline   Reply With Quote
Old 01-06-2019, 11:13 PM   #3
tucsonjwt
Registered User
 
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,146
Re: AC Vent Door Eye Loop

Can you post a pic of that spring? Thanks.
tucsonjwt is offline   Reply With Quote
Old 01-07-2019, 06:18 PM   #4
tucsonjwt
Registered User
 
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,146
Re: AC Vent Door Eye Loop

I found a 73 C10 with factory a/c at the Pull-A-Part. The spring connects to a small hole in the bottom of the vacuum canister bracket. I found my missing spring after I bought the "plenum valve" assembly with spring attached. Thanks for the help.
tucsonjwt is offline   Reply With Quote
Old 01-08-2019, 04:45 PM   #5
Dead Parrot
Registered User
 
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 1,312
Re: AC Vent Door Eye Loop

Glad you found a useful part. This is a pic I took of the one on my 75 before seeing you had solved your question. In case someone else has a similar question.
Attached Images
 
Dead Parrot is offline   Reply With Quote
Old 01-10-2019, 09:28 PM   #6
tucsonjwt
Registered User
 
Join Date: Jul 2007
Location: Tucson, AZ
Posts: 3,146
Re: AC Vent Door Eye Loop

One difference is the kick panel cover on my Silverado is much larger than the half size panel on the basic trucks. I think the one I got off the junkyard 73 also has a somewhat smaller plenum valve, but I have not taken the two apart to compare them.
tucsonjwt is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:34 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com