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#1 |
Registered User
Join Date: Feb 2013
Location: sherman oaks
Posts: 70
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69 gmc a.c.
I have a 69 gmc with factory a.c., everything appears to be there. I have not tried to charge it. What steps and in what order should i try to get it going? should i buy some freon and just try to charge it and see if it works and go from there? thanks
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#2 |
Cluster King
![]() Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: 69 gmc a.c.
The first thing I would do is take it and have a vacuum put on the system. If the system will not hold a vacuum then it has a leak.
If it has a leak then you will need to find it. The best way is with dye. If you don't have the tools or equipment it would be best to take it to a reputable shop that can service it.
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Contact me on all of your gauge cluster needs. I specialize in restoration, repair and parts sales for 67-72 Chevy and GMC trucks. email me at tbonegarris@yahoo.com I am also a dealer for Counterpart for gauge cluster parts only. Also see my facebook page, CG&C |
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#3 |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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Re: 69 gmc a.c.
First, put some gauges on it and see if it has anything in the system.
If it does, turn it on and see if you can get the compressor clutch to engage. If there is no pressure in the system, hook up an a/c vacuum pump, pull it down to 28 inches and and see if it will hold vacuum. If not, then you need to start tracking down the source of the leak before wasting expensive R12.
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"Negative people always seem to have a problem for every solution" |
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#4 |
Registered User
Join Date: Feb 2013
Location: sherman oaks
Posts: 70
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Re: 69 gmc a.c.
ok i will do that, thanks
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#5 | |
Proprietor of Dale's Corner
![]() Join Date: Nov 2012
Location: Vacaville , CA
Posts: 16,103
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Re: 69 gmc a.c.
Quote:
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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#6 |
Registered User
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
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Re: 69 gmc a.c.
Yep, that's right, if the leak is big enough, the vacuum pump can't pull it down that far, but the larger the leak, the easier they are to find.
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"Negative people always seem to have a problem for every solution" |
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#7 |
Proprietor of Dale's Corner
![]() Join Date: Nov 2012
Location: Vacaville , CA
Posts: 16,103
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Re: 69 gmc a.c.
True very true...
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"Some Days Chickens And Some Days Feathers" Dale XNGH ECV Sam Brannan 1004 R.I.P. 67ChevyRedneck R.I.P. Grumpy Old Man |
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