1972 a/c vacuum line help
Thread Starter
Racer
Joined: Oct 2005
Posts: 435
Likes: 0
From: Katy The Republic of Texas
1972 a/c vacuum line help
(If this belongs more in tech and performance, please say so)
Trying to trace all the vac lines on my '72 a/c system, best we could do w/o a shop manual was the attached jpg diagram. If anyone can offer some help or direction, TIA! I also would like comments on the Detroit Iron 1972 Shop Manual on disk. I got on from them for my '66 Grand Prix and was more than a little disappointed, so I 'm hesitant to order one.
Thanks, everyone!
Trying to trace all the vac lines on my '72 a/c system, best we could do w/o a shop manual was the attached jpg diagram. If anyone can offer some help or direction, TIA! I also would like comments on the Detroit Iron 1972 Shop Manual on disk. I got on from them for my '66 Grand Prix and was more than a little disappointed, so I 'm hesitant to order one.
Thanks, everyone!
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
There is a page in the assembly instruction manual (AIM) similar to your attachment, but a bit more specific. Take a look at the 72 AIM.
Last edited by Easy Mike; Aug 25, 2010 at 10:09 AM.
Thread Starter
Racer
Joined: Oct 2005
Posts: 435
Likes: 0
From: Katy The Republic of Texas
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Racer
Joined: Nov 2009
Posts: 423
Likes: 7
From: Utah
I took my AIM and owners manual and tried to figure out how it was supposed to work. I'm not sure if yours has the same routing as a '69.
I made a powerpoint slide for each of the settings and which hose was providing vacuum
Here's my "base" slide.
I made a powerpoint slide for each of the settings and which hose was providing vacuum
Here's my "base" slide.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
This might help you some.. its from the AIM. I have it in a clearer colored picture at my office but not here.. Maybe tomorrow I can post that one.
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Burning Brakes
Joined: Nov 2006
Posts: 893
Likes: 7
From: Orange Park Florida
I colored (with colored pencils) all of the lines/hoses on my aim page the correct hose stripe color. It helps tracing and verifying hose routing.
I'm retired so it gave me something to do!
I'm retired so it gave me something to do!
18243
Racer
Joined: Nov 2009
Posts: 423
Likes: 7
From: Utah
Man, that looks sooo much better than when I colored in my AIM. It's great that you labeled the correct "default" positions of the components too. I had the hardest time deducing from the AIM and owner's manual what happened to each when vacuum was applied (opened it or closed it).
Any chance you're able to do that with a '69L?
As usual, thanks for the awesome (and free) technical help.
Scott
Any chance you're able to do that with a '69L?
As usual, thanks for the awesome (and free) technical help.
Scott
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Scott-
I'm doing all the years one at a time. 77-82 is done and on the site... 72 is done and a few others.. Guess I'll have to move 69 up some.
Willcox
I'm doing all the years one at a time. 77-82 is done and on the site... 72 is done and a few others.. Guess I'll have to move 69 up some.
Willcox
Racer
Joined: Nov 2009
Posts: 423
Likes: 7
From: Utah
Willcox,
That'd be awesome. I'm redoing my interior this winter and would like to get the A/C and heat working again. All of the lines are either missing or chewed by mice.
Your help on this site has helped me a ton and I'm sure has been invaluable to others as well.
Scott
That'd be awesome. I'm redoing my interior this winter and would like to get the A/C and heat working again. All of the lines are either missing or chewed by mice.
Your help on this site has helped me a ton and I'm sure has been invaluable to others as well.
Scott
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Scott,
I had this one almost done so today I finished it. The large one at the top will be next!
Not the entire thing, but it might help you some. It's 1969 and 1970 with ac.
I had this one almost done so today I finished it. The large one at the top will be next!
Not the entire thing, but it might help you some. It's 1969 and 1970 with ac.
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Some from other Aim's.. some from the old parts books.. just depends! I have almost every GM publication from 1958-1988 and most are scanned in my system now.. 
Here's one I just did for the under dash.. not as nice as the others but it makes due.
I had to ad in the under fender and the right hand cowl actuators. 1 more.. the main one and I'll have 1969 and 1970 done!
Here's one I just did for the under dash.. not as nice as the others but it makes due.
I had to ad in the under fender and the right hand cowl actuators. 1 more.. the main one and I'll have 1969 and 1970 done!
