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[GMCnet] How much oil goes in AC compressor? [message #212246]

Tue, 25 June 2013 20:00

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

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Putting the rebuilt compressor in tomorrow. Bob Dunahugh
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Re: [GMCnet] How much oil goes in AC compressor? [message #212247 is a reply to message #212246]

Tue, 25 June 2013 20:04

Emery Stora

Messages: 959
Registered: January 2011

Karma: 4

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Bob
Check the air conditioning section in the GMC motorhome service manual. It tells how much for the compressor and how much to add for other components replaced.

Are you sure your compressor came without oil? Many come filled with either mineral oil or snethetic ester oil for r-134a. DO NOT USE a compressor with ester oil unless you are replacing everything.

Emery Stora

On Jun 25, 2013, at 7:00 PM, Bob Dunahugh <yenko108@hotmail.com> wrote:

> Putting the rebuilt compressor in tomorrow. Bob Dunahugh
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[GMCnet] How much oil goes in AC compressor? [message #212270 is a reply to message #212246]

Wed, 26 June 2013 00:04

BobDunahugh

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Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

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I don't have a service manual to look it up. Were can I get one? Bob Dunahugh
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Re: [GMCnet] How much oil goes in AC compressor? [message #212273 is a reply to message #212270]

Wed, 26 June 2013 00:53

ljdavick

Messages: 3548
Registered: March 2007
Location: Fremont, CA

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Try here
<http://www.bdub.net/manuals/index.html>

Larry Davick

On Jun 25, 2013, at 10:04 PM, Bob Dunahugh <yenko108@hotmail.com> wrote:

> I don't have a service manual to look it up. Were can I get one? Bob Dunahugh
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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[GMCnet] How much oil goes in AC compressor? [message #212790 is a reply to message #212270]

Sat, 29 June 2013 22:29

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

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I got the compressor out and drained it of oil. I got alittle over one once out. I don't have a service manual. I didn't find any leaks with my electronic leak detector, or any signs of oil at O rings,or on hoses. The instructions that came with the compressor said that it came with shipping oil, and it said don't drain. Didn't say how much oil was in the compressor. Did mention to check service manual for how much the system needed. Now what? Bob Dunahugh
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Re: [GMCnet] How much oil goes in AC compressor? [message #212791 is a reply to message #212790]

Sat, 29 June 2013 22:36

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

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Your first question should be: What kind of oil did they put in the compressor?

After that the answer to your posted question is in the GMC maintenance manual in the AC section. Mine is in my coach and it is not here so I can't look it up for you. I believe Billy has the maintenance manual available on his site bdub.net .

I found the manual on line. Click on the following URL:

http://bdub.net/factory-manuals.html

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

[Updated on: Sat, 29 June 2013 23:04]

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Re: [GMCnet] How much oil goes in AC compressor? [message #212816 is a reply to message #212791]

Sun, 30 June 2013 08:02

WD0AFQ

Messages: 7111
Registered: November 2004
Location: Dexter, Mo.

Karma: 207

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Ken Burton wrote on Sat, 29 June 2013 22:36

Bob, Ken is your man here. He and I worked on mine twice. What he says is what I would do. We did mine last at his hanger a couple of years back and it still blows cold.
Dan

3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer

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Re: [GMCnet] How much oil goes in AC compressor? [message #212874 is a reply to message #212790]

Sun, 30 June 2013 16:56

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

Bob
It is perfectly OK to drain the compressor even though the tag says not to. The tag is only for a dealer to make sure that the compressor is not stored on a shelf with no oil.

I would be very concerned to find out what kind of oil was in it. If it was synthetic (ester) oil then it would have to be flushed out before using the compressor in an R-12 system which has mineral oil.

You can use Durocol with either oil but the two oils are not compatible togeter.

I am sending some info to you from the Maintenance manual which tells how much oil to install.

Emery Stora

On Jun 29, 2013, at 9:29 PM, Bob Dunahugh wrote:

> I got the compressor out and drained it of oil. I got alittle over one once out. I don't have a service manual. I didn't find any leaks with my electronic leak detector, or any signs of oil at O rings,or on hoses. The instructions that came with the compressor said that it came with shipping oil, and it said don't drain. Didn't say how much oil was in the compressor. Did mention to check service manual for how much the system needed. Now what? Bob Dunahugh
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