Author Topic: 1976 Eldorado air con  (Read 634 times)

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Offline Matman

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1976 Eldorado air con
« on: December 22, 2016, 11:53:55 AM »
I picked up a new compesseor yesterday, and will look into fitting in in the very near future.
Obviously my Eldo (1976) has r12 and will require r134a.. I would prefer not to change the fittings but keep the hoses and regass ports all original.
has anyone found a way round this? ie can you buy adaptors?

Also what is the capacity of the refrigerant / oil required for a regas?

I read that purging of the system is not necessary to extract old r12 oil as it does not mix with r134a. is this correct?
Thanks

Offline Bruce Reynolds

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Re: 1976 Eldorado air con
« Reply #1 on: December 22, 2016, 12:52:24 PM »
Forgot to mention in my other post, but the oils DO NOT mix, and the old stuff has to be flushed out.

BUT, check with an AC shop, as there might be something better than R134a, as that stuff has been found to be worse than R12, health-wise.

Bruce. :devil:
Bruce Reynolds, Lindisfarne, TASMANIA
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'55 Buick Special Post Coupe (LHD) FOR SALE
'74 Chris Craft Gull Wing RHH
(Past President Modified Chapter)

Offline Matman

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Re: 1976 Eldorado air con
« Reply #2 on: December 22, 2016, 07:51:22 PM »
cheers mate, Marina and I wish you and your family a very merry Xmas and a happy new year.

Offline Phil Weber

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Re: 1976 Eldorado air con
« Reply #3 on: December 30, 2016, 05:51:04 PM »
I'm doing the air on my 1976 Deville soon . I'm guessing it's probably the same as your Eldo.
I'd be interested to see what you had to replace to get the best out of the R134a.
I'm told hoses have to be changed and some say the condenser should be changed to the later parallel type . 

I'm up for a new compressor too . Did you buy your replacement in Australia ?

Thanks.............Phil

Offline Bruce Reynolds

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Re: 1976 Eldorado air con
« Reply #4 on: December 30, 2016, 07:43:55 PM »
G'day Phil,

I did mine when I was in USA, after purchasing the car in 2007.   BUT, the parts can be purchased at most places, and would be worth trying All American Auto Parts in Wendoree, Victoria.

If they don't have the parts, then try Rock Auto in USA.

The A6 Compressors are very heavy to send by Air Mail.

All I changed was the Compressor, TX Valve, and the Drier.   Flushed everything else out.   Haven't changed the hoses yet, but will if I have to.

So far, since 2008, after the initial workings, I have re-gassed it, following the importation of the vehicle, where one has to discharge the system, and in 2012, when I had it topped up in Hervey Bay, following the Toowoomba Rally when I felt it wasn't working to what I expected.   It is ready to be topped up again, so it looks like every 4 years, it needs doing.

Bruce. :devil:
Bruce Reynolds, Lindisfarne, TASMANIA
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'55 Buick Special Post Coupe (LHD) FOR SALE
'74 Chris Craft Gull Wing RHH
(Past President Modified Chapter)

Offline Phil Weber

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Re: 1976 Eldorado air con
« Reply #5 on: December 30, 2016, 09:58:55 PM »
Hi Bruce

Is the tx valve and drier a necessity ? The reason I ask is I found a reconditioned VIR assy a while back on Ebay for $30 . I was hoping to keep it looking original . Love that cad plated look.

Rock Auto and my bank account communicate with each other that often I think they're dating. I'll give 'em credit though they do have the best range and usually are the cheapest.

Thanks..................Phil



Offline Bruce Reynolds

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Re: 1976 Eldorado air con
« Reply #6 on: December 30, 2016, 11:05:36 PM »
Not sure, as I was only dealing with my car, a '72, and that had the POA valve, and not the VIR.

Best talk to an AC specialist.

Bruce. :devil:
Bruce Reynolds, Lindisfarne, TASMANIA
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'55 Buick Special Post Coupe (LHD) FOR SALE
'74 Chris Craft Gull Wing RHH
(Past President Modified Chapter)

Offline cad425

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Re: 1976 Eldorado air con
« Reply #7 on: January 18, 2017, 02:23:21 PM »
Phil already know this, but just to contribute:
My 79 DeVille was done when it arrived in Australia in 2012. New fittings were screwed into the old fittings, all purged and R134A replaced, and the dryer was replaced. Nothing else as far as I know.
In 2016 however, A/C wouldn't work. Took ages for me to find the low pressure switch - on the back of the A/C compressor hidden by the mounting - and understand that the gas had escaped. Gassed it up again for a leak check - nothing leaking except the new fittings! Once these were nipped up a quarter turn internally, all was well.
However, the compressor cycling switch was only allowing short cycle 2-4 seconds. Bridged that, and the system blew cold air at 4 degC. New switch obtained as GM NOS for US$22, and works like a new one. Very happy. Time to move on the other matters.

John
1979 Coupe DeVille 425 - project
2014 Subaru Tribeca - dd
2006 Fairmont V8 - the 'other' V8
1996 E220 Cabriolet - belong 'im spouse
1989 Capri Turbo - gone to Canberra