GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » A/C Compressor Part #
A/C Compressor Part # [message #283987] Tue, 04 August 2015 23:21 Go to next message
bryhart is currently offline  bryhart   United States
Messages: 90
Registered: July 2015
Location: Salem, OR
Karma: 0
Member
Good Evening Everyone,

I need to source a new A/C compressor for a 77 GMC(455). The coach is in another city at the moment and I am arriving later this week to pick it up. I have been told the A/C compressor needs to be replaced. I want to order a new one and have it replaced this week before I have to take the coach on an adventure this Sunday. I have have someone taking care of scheduling the work with a reputable shop but I want to make sure the correct compressor is available for them. They will not have an opportunity to see the coach before the day they are scheduled to do the work. I have searched the forum and there seems to be some trial and error with finding the correct fitment.

If I had more time I would order one from Applied GMC but I am afraid it would not arrive soon enough.

Here is one I found for a Toronado at NAPA:
http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-New/_/R-TEM271105_0388970980

Can anyone confirm this one will work? If not, can someone send me a link to the correct one so I can get it sent to the NAPA store?

Thanks,
--Bryan


1977 Palm Beach
Re: [GMCnet] A/C Compressor Part # [message #283989 is a reply to message #283987] Wed, 05 August 2015 00:03 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Bryan,
The one that you have listed will not fit the coach. You're looking for an A6 Compressor.

NAPA:


O’Reilly Auto Parts:


If your system was an original R12 system and you are going to use R134 instead of Duracool you will have to flush the entire system to remove the mineral oil before you change the oil to ester oil. BAD things happen when you mix these 2 oils. Also check the oil in the compressor that you use, some come charged with mineral oil which you will have to drain and refill or ester oil which you can use with R134 or Duracool. At the very least you will also need to change the Filter Dryer if you change to R134 or Duracool and keep the ester oil.

NAPA:


Now a short word about Duracool. Provides lower head pressure and better cooling and a large number of GMCers are using it. Repair places will not install it as most do not have access to it or know about it.

http://www.duracool.com

JR Wright
GMC Great Laker MHC GMC Eastern States
GMCGL Tech Editor
GMCMHI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan

> On Aug 5, 2015, at 12:21 AM, Bryan Hartman wrote:
>
> Good Evening Everyone,
>
> I need to source a new A/C compressor for a 77 GMC(455). The coach is in another city at the moment and I am arriving later this week to pick it
> up. I have been told the A/C compressor needs to be replaced. I want to order a new one and have it replaced this week before I have to take the coach
> on an adventure this Sunday. I have have someone taking care of scheduling the work with a reputable shop but I want to make sure the correct
> compressor is available for them. They will not have an opportunity to see the coach before the day they are scheduled to do the work. I have searched
> the forum and there seems to be some trial and error with finding the correct fitment.
>
> If I had more time I would order one from Applied GMC but I am afraid it would not arrive soon enough.
>
> Here is one I found for a Toronado at NAPA:
> http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-New/_/R-TEM271105_0388970980
>
> Can anyone confirm this one will work? If not, can someone send me a link to the correct one so I can get it sent to the NAPA store?
>
> Thanks,
> --Bryan
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: A/C Compressor Part # [message #283990 is a reply to message #283987] Wed, 05 August 2015 00:18 Go to previous messageGo to next message
bryhart is currently offline  bryhart   United States
Messages: 90
Registered: July 2015
Location: Salem, OR
Karma: 0
Member
Thank you sir. I have read a few threads where folks have had to try 2 or three times to get the correct compressor from NAPA/OReilly/Etc. before they found the correct fitment. I see you included "NAPA:" and "O'Reilly:" in your response with no part numbers.

Do you know what the correct part number for the correct compressor would be at either or both of those stores?

Thanks Again,
--Bryan


1977 Palm Beach
Re: [GMCnet] A/C Compressor Part # [message #283995 is a reply to message #283989] Wed, 05 August 2015 02:01 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Bryan,
Did you click on the shortcut? That would take you to the page with the info on each unit!

JR Wright
GMC Great Laker MHC
GMC Eastern States
GMCGL Tech Editor
GMCMHI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan

> On Aug 5, 2015, at 1:03 AM, John Wright wrote:
>
> Bryan,
> The one that you have listed will not fit the coach. You're looking for an A6 Compressor.
>
> NAPA:
>
> http://shop.advanceautoparts.com/p/driveworks-reman-gm-a6-compressor-w-clutch-dw57094/5890748-P?searchTerm=57094>
> O’Reilly Auto Parts:
>
>
> If your system was an original R12 system and you are going to use R134 instead of Duracool you will have to flush the entire system to remove the mineral oil before you change the oil to ester oil. BAD things happen when you mix these 2 oils. Also check the oil in the compressor that you use, some come charged with mineral oil which you will have to drain and refill or ester oil which you can use with R134 or Duracool. At the very least you will also need to change the Filter Dryer if you change to R134 or Duracool and keep the ester oil.
>
> NAPA:
>
>
> Now a short word about Duracool. Provides lower head pressure and better cooling and a large number of GMCers are using it. Repair places will not install it as most do not have access to it or know about it.
>
> http://www.duracool.com
>
> JR Wright
> GMC Great Laker MHC GMC Eastern States
> GMCGL Tech Editor
> GMCMHI
> 78 GMC Buskirk 30’ Stretch
> 1975 GMC Avion (Under Reconstruction)
> Michigan
>
>> On Aug 5, 2015, at 12:21 AM, Bryan Hartman wrote:
>>
>> Good Evening Everyone,
>>
>> I need to source a new A/C compressor for a 77 GMC(455). The coach is in another city at the moment and I am arriving later this week to pick it
>> up. I have been told the A/C compressor needs to be replaced. I want to order a new one and have it replaced this week before I have to take the coach
>> on an adventure this Sunday. I have have someone taking care of scheduling the work with a reputable shop but I want to make sure the correct
>> compressor is available for them. They will not have an opportunity to see the coach before the day they are scheduled to do the work. I have searched
>> the forum and there seems to be some trial and error with finding the correct fitment.
>>
>> If I had more time I would order one from Applied GMC but I am afraid it would not arrive soon enough.
>>
>> Here is one I found for a Toronado at NAPA:
>> http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-New/_/R-TEM271105_0388970980
>>
>> Can anyone confirm this one will work? If not, can someone send me a link to the correct one so I can get it sent to the NAPA store?
>>
>> Thanks,
>> --Bryan
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>


_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] A/C Compressor Part # [message #283998 is a reply to message #283995] Wed, 05 August 2015 05:02 Go to previous messageGo to next message
bryhart is currently offline  bryhart   United States
Messages: 90
Registered: July 2015
Location: Salem, OR
Karma: 0
Member
powerjon wrote on Wed, 05 August 2015 00:01
Bryan,
Did you click on the shortcut? That would take you to the page with the info on each unit!

JR Wright
GMC Great Laker MHC
GMC Eastern States
GMCGL Tech Editor
GMCMHI
78 GMC Buskirk 30' Stretch
1975 GMC Avion (Under Reconstruction)
Michigan



I see. They are not links for me...Just static text.


1977 Palm Beach
Re: [GMCnet] A/C Compressor Part # [message #284005 is a reply to message #283995] Wed, 05 August 2015 08:19 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Bryan,
The part numbers for the AC Comp A6 compressors are as follows:
Napa: TEM251129
Advance Auto: DW57094
O’Reilly: 57092

Dryer Napa: TEM208508

JR Wright
GMC Great Laker MHC
GMC Eastern States
GMCGL Tech Editor
GMCMHI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan

> On Aug 5, 2015, at 3:01 AM, John Wright wrote:
>
> Bryan,
> Did you click on the shortcut? That would take you to the page with the info on each unit!
>
> JR Wright
> GMC Great Laker MHC
> GMC Eastern States
> GMCGL Tech Editor
> GMCMHI
> 78 GMC Buskirk 30’ Stretch
> 1975 GMC Avion (Under Reconstruction)
> Michigan
>
>> On Aug 5, 2015, at 1:03 AM, John Wright wrote:
>>
>> Bryan,
>> The one that you have listed will not fit the coach. You're looking for an A6 Compressor.
>>
>> NAPA:
>>
>> > http://shop.advanceautoparts.com/p/driveworks-reman-gm-a6-compressor-w-clutch-dw57094/5890748-P?searchTerm=57094>
>> O’Reilly Auto Parts:
>>
>>
>> If your system was an original R12 system and you are going to use R134 instead of Duracool you will have to flush the entire system to remove the mineral oil before you change the oil to ester oil. BAD things happen when you mix these 2 oils. Also check the oil in the compressor that you use, some come charged with mineral oil which you will have to drain and refill or ester oil which you can use with R134 or Duracool. At the very least you will also need to change the Filter Dryer if you change to R134 or Duracool and keep the ester oil.
>>
>> NAPA:
>>
>>
>> Now a short word about Duracool. Provides lower head pressure and better cooling and a large number of GMCers are using it. Repair places will not install it as most do not have access to it or know about it.
>>
>> http://www.duracool.com
>>
>> JR Wright
>> GMC Great Laker MHC GMC Eastern States
>> GMCGL Tech Editor
>> GMCMHI
>> 78 GMC Buskirk 30’ Stretch
>> 1975 GMC Avion (Under Reconstruction)
>> Michigan
>>
>>> On Aug 5, 2015, at 12:21 AM, Bryan Hartman wrote:
>>>
>>> Good Evening Everyone,
>>>
>>> I need to source a new A/C compressor for a 77 GMC(455). The coach is in another city at the moment and I am arriving later this week to pick it
>>> up. I have been told the A/C compressor needs to be replaced. I want to order a new one and have it replaced this week before I have to take the coach
>>> on an adventure this Sunday. I have have someone taking care of scheduling the work with a reputable shop but I want to make sure the correct
>>> compressor is available for them. They will not have an opportunity to see the coach before the day they are scheduled to do the work. I have searched
>>> the forum and there seems to be some trial and error with finding the correct fitment.
>>>
>>> If I had more time I would order one from Applied GMC but I am afraid it would not arrive soon enough.
>>>
>>> Here is one I found for a Toronado at NAPA:
>>> http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-New/_/R-TEM271105_0388970980
>>>
>>> Can anyone confirm this one will work? If not, can someone send me a link to the correct one so I can get it sent to the NAPA store?
>>>
>>> Thanks,
>>> --Bryan
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: [GMCnet] A/C Compressor Part # [message #284009 is a reply to message #284005] Wed, 05 August 2015 08:44 Go to previous messageGo to next message
Jim at the Co-op is currently offline  Jim at the Co-op   United States
Messages: 291
Registered: May 2014
Location: Orlando Florida
Karma: 2
Senior Member
While you are in the mode of updating your dash AC a bit.... Put a good
ball shut off valve on each of the 2 heater hoses going into the heater box
up front. First if that 30+ year old heater core starts to leak it will be
easy to take it out of the circuit but also this vacuum operated vent
system was never designed to work this long... in the absence of vacuum to
the heater control valve it passes heat to the box which will surly
contaminate your cooling attempt because the foam gasket baffle the heater
control cable controls will allow heat into the AC evaporator not letting
it get as cold as it could be.

If you can get heat out of that sick vent system in the winter and cold air
in the summer I call that good. Trying to make it work totally as new
would take wayyyy to much work. All the rest of the stuff of the system
can be renewed as original... the vent system may never work correctly
again. valves off in the summer really helps the system

Jim Bounds
-------------------------

On Wed, Aug 5, 2015 at 9:19 AM, John Wright wrote:

> Bryan,
> The part numbers for the AC Comp A6 compressors are as follows:
> Napa: TEM251129
> Advance Auto: DW57094
> O’Reilly: 57092
>
> Dryer Napa: TEM208508
>
> JR Wright
> GMC Great Laker MHC
> GMC Eastern States
> GMCGL Tech Editor
> GMCMHI
> 78 GMC Buskirk 30’ Stretch
> 1975 GMC Avion (Under Reconstruction)
> Michigan
>
>> On Aug 5, 2015, at 3:01 AM, John Wright wrote:
>>
>> Bryan,
>> Did you click on the shortcut? That would take you to the page with the
> info on each unit!
>>
>> JR Wright
>> GMC Great Laker MHC
>> GMC Eastern States
>> GMCGL Tech Editor
>> GMCMHI
>> 78 GMC Buskirk 30’ Stretch
>> 1975 GMC Avion (Under Reconstruction)
>> Michigan
>>
>>> On Aug 5, 2015, at 1:03 AM, John Wright wrote:
>>>
>>> Bryan,
>>> The one that you have listed will not fit the coach. You're looking
> for an A6 Compressor.
>>>
>>> NAPA:
>>> http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-Remfd/_/R-TEM251129_0482903910
>>
>>> >>
> http://shop.advanceautoparts.com/p/driveworks-reman-gm-a6-compressor-w-clutch-dw57094/5890748-P?searchTerm=57094
>>
>>> O’Reilly Auto Parts:
>>> http://www.oreillyauto.com/site/c/detail/MRY0/57092.oap?ck=Search_57092_-1_-1&keyword=57092
>>
>>>
>>> If your system was an original R12 system and you are going to use R134
> instead of Duracool you will have to flush the entire system to remove the
> mineral oil before you change the oil to ester oil. BAD things happen when
> you mix these 2 oils. Also check the oil in the compressor that you use,
> some come charged with mineral oil which you will have to drain and refill
> or ester oil which you can use with R134 or Duracool. At the very least
> you will also need to change the Filter Dryer if you change to R134 or
> Duracool and keep the ester oil.
>>>
>>> NAPA:
>>> http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Filter-Dryer/_/R-TEM208508_0361923910
>>
>>>
>>> Now a short word about Duracool. Provides lower head pressure and
> better cooling and a large number of GMCers are using it. Repair places
> will not install it as most do not have access to it or know about it.
>>>
>>> http://www.duracool.com
>>>
>>> JR Wright
>>> GMC Great Laker MHC GMC Eastern States
>>> GMCGL Tech Editor
>>> GMCMHI
>>> 78 GMC Buskirk 30’ Stretch
>>> 1975 GMC Avion (Under Reconstruction)
>>> Michigan
>>>
>>>> On Aug 5, 2015, at 12:21 AM, Bryan Hartman wrote:
>>>>
>>>> Good Evening Everyone,
>>>>
>>>> I need to source a new A/C compressor for a 77 GMC(455). The coach is
> in another city at the moment and I am arriving later this week to pick it
>>>> up. I have been told the A/C compressor needs to be replaced. I want
> to order a new one and have it replaced this week before I have to take the
> coach
>>>> on an adventure this Sunday. I have have someone taking care of
> scheduling the work with a reputable shop but I want to make sure the
> correct
>>>> compressor is available for them. They will not have an opportunity to
> see the coach before the day they are scheduled to do the work. I have
> searched
>>>> the forum and there seems to be some trial and error with finding the
> correct fitment.
>>>>
>>>> If I had more time I would order one from Applied GMC but I am afraid
> it would not arrive soon enough.
>>>>
>>>> Here is one I found for a Toronado at NAPA:
>>>>
> http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-New/_/R-TEM271105_0388970980
>>>>
>>>> Can anyone confirm this one will work? If not, can someone send me a
> link to the correct one so I can get it sent to the NAPA store?
>>>>
>>>> Thanks,
>>>> --Bryan
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Re: [GMCnet] A/C Compressor Part # [message #284019 is a reply to message #283987] Wed, 05 August 2015 09:53 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
Messages: 4442
Registered: January 2004
Karma: 13
Senior Member
The A6 compressor was used on many different car and truck for many years. There are many differences in them. Pulley diameter and distance from the centerline of the pulley to the mount are the major differences. When I replaced mine several years back I had to order three different ones that all said they fit my application but two did not.

Applied GMC is your best choice and he can rush one out to you. You know it will fit the GMC Motorhome.

Emery Stora

> On Aug 4, 2015, at 10:21 PM, Bryan Hartman wrote:
>
> Good Evening Everyone,
>
> I need to source a new A/C compressor for a 77 GMC(455). The coach is in another city at the moment and I am arriving later this week to pick it
> up. I have been told the A/C compressor needs to be replaced. I want to order a new one and have it replaced this week before I have to take the coach
> on an adventure this Sunday. I have have someone taking care of scheduling the work with a reputable shop but I want to make sure the correct
> compressor is available for them. They will not have an opportunity to see the coach before the day they are scheduled to do the work. I have searched
> the forum and there seems to be some trial and error with finding the correct fitment.
>
> If I had more time I would order one from Applied GMC but I am afraid it would not arrive soon enough.
>
> Here is one I found for a Toronado at NAPA:
> http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-New/_/R-TEM271105_0388970980
>
> Can anyone confirm this one will work? If not, can someone send me a link to the correct one so I can get it sent to the NAPA store?
>
> Thanks,
> --Bryan
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org


_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Re: A/C Compressor Part # [message #284034 is a reply to message #283987] Wed, 05 August 2015 12:31 Go to previous messageGo to next message
bwevers is currently offline  bwevers   United States
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
Senior Member
IMHO: A used A6 from the junkyard is better than a so-called
"rebuilt" from any of the discount autopart stores.
The rebuilt units from south of the boarder are notorious for failing.


Bill Wevers GMC49ers, GMC Western States 1975 Glenbrook - Manny Powerdrive, OneTon 455 F Block, G heads San Jose
Re: A/C Compressor Part # [message #284040 is a reply to message #283987] Wed, 05 August 2015 13:48 Go to previous messageGo to next message
bryhart is currently offline  bryhart   United States
Messages: 90
Registered: July 2015
Location: Salem, OR
Karma: 0
Member
Thanks everyone. I am not sure if I am going to try and "rush" the A/C repair in the limited time I have at the moment. I may just use the generator/roof air until I get the coach home and I can spend a little more time to do it right. I'll make the final decision when I can confirm parts availability and talk to the tech.

Thanks again and there will be many more questions coming...

--Bryan


1977 Palm Beach
Re: [GMCnet] A/C Compressor Part # [message #284043 is a reply to message #284040] Wed, 05 August 2015 14:17 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
Senior Member
And how's the Onan? A lot of folks who plan to run with the roof air find
that their Onan won't cooperate.

Ken H.


On Wed, Aug 5, 2015 at 2:48 PM, Bryan Hartman wrote:

> Thanks everyone. I am not sure if I am going to try and "rush" the A/C
> repair in the limited time I have at the moment. I may just use the
> generator/roof air until I get the coach home and I can spend a little
> more time to do it right. I'll make the final decision when I can confirm
> parts
> availability and talk to the tech.
>
> Thanks again and there will be many more questions coming...
>
> --Bryan
>
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org



Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: [GMCnet] A/C Compressor Part # [message #284083 is a reply to message #284043] Wed, 05 August 2015 22:37 Go to previous messageGo to next message
bryhart is currently offline  bryhart   United States
Messages: 90
Registered: July 2015
Location: Salem, OR
Karma: 0
Member
Ken Henderson wrote on Wed, 05 August 2015 12:17
And how's the Onan? A lot of folks who plan to run with the roof air find
that their Onan won't cooperate.

Ken H.


Can you elaborate? Does that mean that a lot of the Onans won't keep running as you travel down the road? Overheating? What issues or symptoms should I be worried about?


1977 Palm Beach
Re: [GMCnet] A/C Compressor Part # [message #284089 is a reply to message #284083] Wed, 05 August 2015 22:56 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
Man, I am here to defend the much too oft maligned ONAN GENERATOR.These old
trolls are hidden and neglected somewhere in the bowels of the GMC. The old
trusty machine sits all alone in the dark, no maintenance to speak of,
literally for years. At the first hint of a burp or a stumble, caused by
the owner totally ignoring it for years at a time, they get yanked out of
their comfy enclosure and dumped out in the weather. Come on people, show
them a little love. They are as reliable as any machine can be made. They
are designed to go 2500 hours between overhauls. Mine has been back there
purring along for 37 years and has less than 500 hours on it. Do the math.
Is your pot metal Honda going to be around that long? It will be turned
back into aluminum and zinc residue by road salt long before that. Hey
guys, change it's oil once in a while, filter too. Put a fresh air cleaner
on it, and clean the fuel screen. Blow the rat and mouse droppings and mud
dauber nests out once in a while. You won't regret it.
Jim Hupy
On Aug 5, 2015 8:37 PM, "Bryan Hartman" wrote:

> Ken Henderson wrote on Wed, 05 August 2015 12:17
>> And how's the Onan? A lot of folks who plan to run with the roof air
> find
>> that their Onan won't cooperate.
>>
>> Ken H.
>
>
> Can you elaborate? Does that mean that a lot of the Onans won't keep
> running as you travel down the road? Overheating? What issues or symptoms
> should
> I be worried about?
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

Re: [GMCnet] A/C Compressor Part # [message #284090 is a reply to message #284083] Wed, 05 August 2015 23:03 Go to previous messageGo to next message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
Senior Member
Yes, a lot of Onan's are not reliable on the road. A lot are, and I can't
quote statistics, but if you're putting "all your eggs in that basket",
you'll likely be one of the unlucky ones.

I don't have the magic answer to why they're unreliable, but it has been my
observation that those who have overheating problems while parked but hope
for better results while driving are generally disappointed.

My best advice, based on a few years of experience: For this first trip,
keep your schedule flexible enough to allow you to travel only during the
cool hours -- NOT the middle of the day.

Let me explain that: Our GMC was bought, and used, for a trip to Alaska,
made in 2000. I had two years of GMC preparation and experience behind me
when we left S. GA with a freshly refurbished dash HVAC, and a new roof
A/C. The Onan was running pretty good, and I upgraded it with an
electronic ignition while waiting for the ferry to Alaska. We didn't need
A/C until we got back from Alaska but in Spokane, we learned that the dash
HVAC had lost R-12, so I had it topped off. A transmission leak in Wyoming
caused a several day delay. By the end of that, the R-12 was gone again.
Crossing the mid-west in August, the Onan decided it didn't like the heat,
so we lost the roof air. We wound up on a schedule of 0400 to 1200 travel
across Kansas and the rest of the US, wearing swimsuits and with the "wind
wings" deployed.

You won't have the 2 years pre-prep I had.

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc.
www.gmcwipersetc.com

On Wed, Aug 5, 2015 at 11:37 PM, Bryan Hartman wrote:

> Ken Henderson wrote on Wed, 05 August 2015 12:17
>> And how's the Onan? A lot of folks who plan to run with the roof air
> find
>> that their Onan won't cooperate.
>>
>> Ken H.
>
>
> Can you elaborate? Does that mean that a lot of the Onans won't keep
> running as you travel down the road? Overheating? What issues or symptoms
> should
> I be worried about?
>
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org



Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
Re: A/C Compressor Part # [message #284118 is a reply to message #283987] Thu, 06 August 2015 10:14 Go to previous messageGo to next message
thesmith is currently offline  thesmith   United States
Messages: 589
Registered: February 2015
Location: Cary, NC
Karma: 6
Senior Member
If you are buying a new one then you might want to go this direction.

http://www.bdub.net/Modern_AC_Compressor_Replacement.pdf






Pete






bryhart wrote on Wed, 05 August 2015 00:21
Good Evening Everyone,

I need to source a new A/C compressor for a 77 GMC(455). The coach is in another city at the moment and I am arriving later this week to pick it up. I have been told the A/C compressor needs to be replaced. I want to order a new one and have it replaced this week before I have to take the coach on an adventure this Sunday. I have have someone taking care of scheduling the work with a reputable shop but I want to make sure the correct compressor is available for them. They will not have an opportunity to see the coach before the day they are scheduled to do the work. I have searched the forum and there seems to be some trial and error with finding the correct fitment.

If I had more time I would order one from Applied GMC but I am afraid it would not arrive soon enough.

Here is one I found for a Toronado at NAPA:
http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/A-C-Comp-w-Clutch-New/_/R-TEM271105_0388970980

Can anyone confirm this one will work? If not, can someone send me a link to the correct one so I can get it sent to the NAPA store?

Thanks,
--Bryan



Cary, NC 1978 Center Kitchen Royale.
Re: A/C Compressor Part # [message #284125 is a reply to message #284118] Thu, 06 August 2015 11:35 Go to previous message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
Senior Member
thesmith wrote on Thu, 06 August 2015 10:14
If you are buying a new one then you might want to go this direction.

http://www.bdub.net/Modern_AC_Compressor_Replacement.pdf


Pete





Jim K has a really nice plug and play aluminum replacement I highly recommend


Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
Previous Topic: 1/4" tubing behind the galley cabinet
Next Topic: [GMCnet] GMC on Breaking Bad
Goto Forum:
  


Current Time: Mon Sep 30 09:21:04 CDT 2024

Total time taken to generate the page: 0.01940 seconds