| AC Compressor Part# [message #211387] |
Mon, 17 June 2013 14:18  |
quadracerx1
Messages: 207
Registered: April 2013
Location: Puyallup, Washington
Karma: 1
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Im in the process of changing the fan clutch and belts, etc. And decided to charge the dash AC. But I noticed that the AC Compressor is dead.
Anyone have a part# on a rebuilt compressor so I can give it to the "non GMC Motorhome savvy" parts guy at the local parts store?
Thanks,
Steve
75 26' GMC Glenbrook
Puyallup, Washington
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| Re: AC Compressor Part# [message #211389 is a reply to message #211387] |
Mon, 17 June 2013 14:23  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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| quadracerx1 wrote on Mon, 17 June 2013 14:18 |
Im in the process of changing the fan clutch and belts, etc. And decided to charge the dash AC. But I noticed that the AC Compressor is dead.
Anyone have a part# on a rebuilt compressor so I can give it to the "non GMC Motorhome savvy" parts guy at the local parts store?
Thanks,
Steve
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What do you mean by "dead"
Does the clutch not engage?
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: AC Compressor Part# [message #211393 is a reply to message #211387] |
Mon, 17 June 2013 14:31 |
quadracerx1
Messages: 207
Registered: April 2013
Location: Puyallup, Washington
Karma: 1
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Clutch does not engage and it leaks.... So I was going to try a rebuilt unit from the local auto parts store....
Thanks,
Steve
75 26' GMC Glenbrook
Puyallup, Washington
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| Re: AC Compressor Part# [message #211415 is a reply to message #211387] |
Mon, 17 June 2013 16:22 |
quadracerx1
Messages: 207
Registered: April 2013
Location: Puyallup, Washington
Karma: 1
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Id rather take my chances with a rebuilt from the local auto parts store... Every time I try to replace seals they leak more than before... LOL So, Just need a part number, ill match the pulley width too. Thanks, for the tip...
Steve
75 26' GMC Glenbrook
Puyallup, Washington
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| Re: AC Compressor Part# [message #211441 is a reply to message #211387] |
Mon, 17 June 2013 20:05 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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I've heard this before:
"Id rather take my chances with a rebuilt from the local auto parts store..."
IMHO the rebuilt A6 compressors are junk.
I wasted a lot of time when I replaced my old A6 with a rebuilt Four Seasons. Their quality is terrible.
I should have bought this new one from Jim K
http://appliedgmc.com/prod.itml/icOid/1423
Just an opinion,
Bill
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: AC Compressor Part# [message #211443 is a reply to message #211415] |
Mon, 17 June 2013 20:33 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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| quadracerx1 wrote on Mon, 17 June 2013 14:22 |
Id rather take my chances with a rebuilt from the local auto parts store... Every time I try to replace seals they leak more than before... LOL So, Just need a part number, ill match the pulley width too. Thanks, for the tip...
Steve
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The reason the seal leaks when you replace it is likely there is some wear on the shaft where the old seal cut into it. Larry found a newer double seal that locates on a virgin part of the shaft that shouldn't leak if you are careful when installing it. A rebuilt compressor is not a slam dunk they sometimes don't last a long time.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: AC Compressor Part# [message #211444 is a reply to message #211441] |
Mon, 17 June 2013 20:36 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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| bwevers wrote on Mon, 17 June 2013 18:05 |
I've heard this before:
"Id rather take my chances with a rebuilt from the local auto parts store..."
IMHO the rebuilt A6 compressors are junk.
I wasted a lot of time when I replaced my old A6 with a rebuilt Four Seasons. Their quality is terrible.
I should have bought this new one from Jim K
http://appliedgmc.com/prod.itml/icOid/1423
Just an opinion,
Bill
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Did your junkyard gem from the Chevy truck quit working? I'd be willing to bet it will go another 20 years with the new seals.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: AC Compressor Part# [message #211445 is a reply to message #211387] |
Mon, 17 June 2013 21:02 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Rebuilt means it rotated on the bench and didn't make too much racket and the black spray can sprayed. Stick with the devil you know.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: AC Compressor Part# [message #211474 is a reply to message #211387] |
Tue, 18 June 2013 02:19 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Check the warranty on your proposed "rebuilt" compressor. Most of them are 90 days.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: AC Compressor Part# [message #211484 is a reply to message #211444] |
Tue, 18 June 2013 08:40 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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@roy
Yes, my A6 junkyard gem is still working.
It came out of a 1972 Chevy truck. I replaced the seal
and it has been working for over a year. I must have
removed and replaced my compressor 3 times before
I finally got a good one. So how much money did I save
by putting in a rebuilt/used compressor?
Finding a good used A6 compressor is getting
more difficult. To save time and $money, the newer
design, light weight, S6 compressor looks very attractive.
Regards,
Bill
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: [GMCnet] AC Compressor Part# [message #211874 is a reply to message #211415] |
Sat, 22 June 2013 09:54 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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On Jun 17, 2013, at 3:22 PM, Steve wrote:
>
>
> Id rather take my chances with a rebuilt from the local auto parts store... Every time I try to replace seals they leak more than before... LOL So, Just need a part number, ill match the pulley width too. Thanks, for the tip...
>
> Steve
> --
It not just the pulley width that you have to match. Some have longer "necks" which means that the pulley will not line up with the engine pulley. You have to match up the pulley length from the center of the pulley to the compressor bracket. Many years ago I replaced the compressor with the following:
NAPA 251101
Murray 251101
Everco A8594
329051
Bear in mind that this was about 12 years ago.
I had to match mine to the actual compressor that NAPA had as the necks of three of them with the same part number varied. I finally found the right one.
There are also two options on the compressor a "superheat" model and a "high pressure" model. The GMC is a "superheat".
When I was helping someone else with theirs (again many years ago) I have these numbers from Checker (now O'Riellys).
The problem is that the clutch and pulley assembly varies greatly. First they had a compressor that was
for the Olds Tornado. It had the wrong pulley. The GMC takes a 7/16
inch, 5- 3-4" pulley. We then checked the book and ordered one that
looked right but the pulley was about one inch too close to the
compressor body. I ordered another, 57087, and it was the correct
one.
The Tornado compressor, clutch and pulley installed, was $99.95. The second
one I ordered was $129.95 and the one that fit was $229.95. The only
difference was the pulley as the compressors were all the same.
If anyone wants to rebuild their own, the compressor is 57052 ("superheat"),
the clutch is 48276, the hub is 48241, and the coil is 48245. You'll need a
special puller that threads into the hub to pull it off the shaft so unless
you have or can beg, borrow, or steal the puller, you'd probably be better
off getting the complete assembly, 57087.
It came without any oil. You can install either air conditioner mineral oil
for R-12 or the ester based oil for R-134. If you still have R-12 in your system then use the mineral oil. You'll need about 8 to 10 oz.
depending on whether you drain the condensor and evaporator and put on a new
dryer.
Emery Stora
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