Home » Public Forums » GMCnet » [GMCnet] Engine Belts
| [GMCnet] Engine Belts [message #164773] |
Sat, 31 March 2012 09:55  |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Quick question here. Has there been any update on suitable
alternator, water pump/power steering, and A/C belts since
the Spring 2011 Parts Interchange Index?
If I remember correctly, a correct width belt will NOT fit
into an 11 mm open end wrench.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~~ k2gkk @ hotmail dot com ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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| Re: [GMCnet] Engine Belts [message #164774 is a reply to message #164773] |
Sat, 31 March 2012 10:16  |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Mac,
This is my post of May 2011 -- last time I bought belts...
May 2, 2011
Part numbers for 455 belts in the archives and on Gene's site are listed as
AC 15620
Alt 15573
PS 15450
Checking at autozone the air conditioning and alternator belts are no longer regularly available -- new Duralast part numbers are
AC 15615
Alt 15575
Since the last three numbers are the length in inches the AC belt is 0.5 inch shorter and the alt belt is 0.2 inch longer. I do not expect this difference to be a problem -- but. I have not yet installed them -- can anyone else confirm their fit and then we can give the numbers to bdub for the GMCMI parts interchange.
The belts are all labeled 11 mm and I measured them all to confirm their width.
The belts were $7.99 each.
End...
Dennis
| k2gkk wrote on Sat, 31 March 2012 09:55 |
Quick question here. Has there been any update on suitable
alternator, water pump/power steering, and A/C belts since
the Spring 2011 Parts Interchange Index?
If I remember correctly, a correct width belt will NOT fit
into an 11 mm open end wrench.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~~ k2gkk @ hotmail dot com ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
_______________
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*--OO---[]---O-*
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Engine Belts [message #164778 is a reply to message #164775] |
Sat, 31 March 2012 10:52 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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How do the new bags feel Mac?
Sully
77 royale
Sent from my Verizon Wireless BlackBerry
-----Original Message-----
From: D C *Mac* Macdonald <k2gkk@hotmail.com>
Sender: gmclist-bounces@temp.gmcnet.org
Date: Sat, 31 Mar 2012 10:50:44
To: <gmclist@temp.gmcnet.org>
Reply-To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Engine Belts
Thanks, Dennis.
I think I'll head for the NAPA store.
BTW, Peter Bailey said thanks for the
package you sent to him via me.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~~ k2gkk @ hotmail dot com ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
_______________
*[ ]....[][ ][]\
*--OO---[]---O-*
> To: gmclist@temp.gmcnet.org
> From: dennisfsexton@aol.com
> Date: Sat, 31 Mar 2012 10:16:32 -0500
> Subject: Re: [GMCnet] Engine Belts
>
>
>
> Mac,
>
> This is my post of May 2011 -- last time I bought belts...
>
> May 2, 2011
> Part numbers for 455 belts in the archives and on Gene's site are listed as
> AC 15620
> Alt 15573
> PS 15450
>
> Checking at autozone the air conditioning and alternator belts are no longer regularly available -- new Duralast part numbers are
>
> AC 15615
> Alt 15575
>
> Since the last three numbers are the length in inches the AC belt is 0.5 inch shorter and the alt belt is 0.2 inch longer. I do not expect this difference to be a problem -- but. I have not yet installed them -- can anyone else confirm their fit and then we can give the numbers to bdub for the GMCMI parts interchange.
>
> The belts are all labeled 11 mm and I measured them all to confirm their width.
>
> The belts were $7.99 each.
>
> End...
>
> Dennis
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Engine Belts [message #164801 is a reply to message #164784] |
Sat, 31 March 2012 17:00 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""As you have probably noted, I have some other more
pressing problems at this time. I just hope that the
loss of water circulation and subsequent engine
overheating didn't damage the engine. It was knocking
pretty heavily under load when I noted the problem!
::
If you still have an Olds engine, you most likely wil be fine. The knocking most likely was pre-ignition from very hot combustion chambers.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Engine belts [message #342205 is a reply to message #164773] |
Tue, 02 April 2019 23:26 |
rallymaster
Messages: 662
Registered: February 2004
Location: North Plains, ORYGUN
Karma: -4
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Senior Member |
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How did the change to 1/2" belts go, and what mfg. and part #, if you
remember.
Thanks, RonC
On Mon, 01 Apr 2019 15:13:40 -0600 Ken Burton via Gmclist
writes:
> After reading one of your postings here on the procedure, I decided
> to try it when I changed to 1/2" belts. It worked great.
>
> Ken B.
>
> Kingsley Coach wrote on Mon, 01 April 2019 15:33
>> Some day I'll show up at a rally and show you how change belts
> without
>> moving the shroud or loosening any attachment like the A/C,
> alternator, or
>> power steering.
>> I tried to write up a description of the process many years ago
> but no one
>> seemed too excited..lol Before I discovered I had the alternator
> out of
>> alignment with the rest of the pulleys on one of my trips to NM, I
> changed
>> a total of 3 belts on the side of the road. One was supervised by
> a Trooper
>> who spent a lot of time scratching his head lol
>>
>> Mike in NS
>
>
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
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Ron & Linda Clark
North Plains, ORYGUN
1978 Eleganza II
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Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II
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| Re: [GMCnet] Engine Belts [message #342206 is a reply to message #164773] |
Tue, 02 April 2019 23:52 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Rather than rely on my memory (part number A56 comes to mind) for the Alternator belt(s). I have a double alternator belt and I have no PS belt. Let me go search for the postings to make sure. I put them on 2 different coaches at the time and there is one spare set in one of the coaches now. Unfortunately neither of the coaches are here for me to go look at.
Let me research it again.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Engine Belts [message #342207 is a reply to message #342206] |
Wed, 03 April 2019 01:23 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Well, my memory still works sometimes. The alternator belt is an A56. NAPA is one source for it. I ordered ours from one of the two V-belt supply places in Sioux Falls. This is an industrial number so brand does not matter. A56 says it is a 56" belt. The problem is the industrial belts are measured ID and ours are measured OD. So an industrial belt of the same physical size will have slightly lower number A56 works great for the alternator and is 58" OD.
I looked up the various part numbers listed for our coaches using OEM 7/16" belts.
The alternator translates to 7/16" by 57" to 57.5" inches and we know A56 works great here. So I say subtract 1 to 1.5 use that length number for the A (industrial belt) size.
I have not figured out or installed the correct PS belt because I do not have any need for one. But this is what I think they should be it should be:
403 and 455 Alternator (I have only tested a 455).
7/16" X 57" to 57.5" use an A56
403 and 455 power steering.
7/16" x 42" use an A40 or A41
455 AC
7/16" X 62" use an A60 or A61
403 AC appears to be
7/16" 60.3" to 60.7" use an A59
If you have any doubts on the size + or - an inch, order them both. The most expensive belt listed above was around $3.50 down to around $2.35 each.
Then next time I order something from them I will throw an A61 on the order for my AC.
https://www.vbeltsupply.com/conventional-wrapped-belts/a-section-conventional-wrapped-belts?limit=36&p=2
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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