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Alternator belt - heads up [message #370516] Sat, 17 September 2022 09:59 Go to next message
boybach is currently offline  boybach   United States
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Registered: December 2020
Location: Vancouver Island
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Due to my recent charging issue and unnecessary(!) removal of the alternator, I replaced the belt when I reassembled things. The belt I had in my spares was about 1/2" too long, but used it temporarily just so I could test the system.

After picking up the correct (well, the same as what was fitted) belt I decided to re-visit the GMCmotorhome.info site to see if the belt I was going to refit matched any in the chart.

I'd purchased a Gates 7570, same as the belt I was replacing.

The http://www.bdub.net/GMCMotorhome.info/BELTS.html chart shows the Gates alternator belt as a 7507, which as far as I can see must be typo.

I'm pretty sure there's no such thing as a 7507.

Larry


Larry - Victoria BC - 1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
Re: Alternator belt - heads up [message #370517 is a reply to message #370516] Sat, 17 September 2022 10:33 Go to previous messageGo to next message
RF_Burns is currently offline  RF_Burns   Canada
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Registered: June 2008
Location: S. Ontario, Canada
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Larry,

Here is a link to a collection of V-belt info over on the Resources section of the new Forum.

After trying a number of automotive belts listed as correct, but none were right...

I went with Industrial belts. They are a bit wider but that is better than too narrow. Two years later and no squealing and they are still running tight. I got them at TSC Stores (now Peavey Stores)

Go to the page and hit "Download" at the top left.
https://www.gmcmotorhome.org/resources/v-belts-for-alternator-power-steering-and-air-conditioner-compressor.59/

The belts used in our GMCs would be:
Alternator ‐ A56
Power Steering – A44
Air Conditioner ‐ A61 or A59 for the 403 engine



Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Re: Alternator belt - heads up [message #370518 is a reply to message #370516] Sat, 17 September 2022 11:15 Go to previous messageGo to next message
boybach is currently offline  boybach   
Messages: 566
Registered: December 2020
Location: Vancouver Island
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Thanks Bruce - will pick up those when I get a chance. Unfortunately don't have those stores out west, at least not on the island (yet)

cheers

Larry


Larry - Victoria BC - 1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
Re: Alternator belt - heads up [message #370522 is a reply to message #370518] Mon, 19 September 2022 06:14 Go to previous messageGo to next message
Bruce Hart is currently offline  Bruce Hart   United States
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Registered: October 2011
Location: La Grange, Wyoming
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Auto parts stores will have the belts

https://www.napaonline.com/en/p/NBHA56?impressionRank=1


Bruce Hart 1976 Palm Beach 1977 28' Kingsley La Grange, Wyoming
Re: Alternator belt - heads up [message #370526 is a reply to message #370522] Tue, 20 September 2022 22:28 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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Location: Hebron, Indiana
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I know of at least 3 stores in my town of 30,000 that would have them. You should be able to easily find them around you. . and you

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
Re: Alternator belt - heads up [message #370530 is a reply to message #370526] Wed, 21 September 2022 17:17 Go to previous messageGo to next message
boybach is currently offline  boybach   
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Registered: December 2020
Location: Vancouver Island
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The point of my post was to alert people that there is a typo on the GMCmotorhome website ...which BTW is also carried forward to Bruce's .pdf - just hoped someone would edit and correct the information.

Larry


Larry - Victoria BC - 1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
Re: Alternator belt - heads up [message #370532 is a reply to message #370516] Thu, 22 September 2022 09:31 Go to previous message
RF_Burns is currently offline  RF_Burns   Canada
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Registered: June 2008
Location: S. Ontario, Canada
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Senior Member
Larry,

I believe the charts were originally made by Gene Fisher and I believe now Billy Massey maybe has control of his website.

Maybe a message to Billy to see if he does have control and can change it.

If he does I can redo my document.



Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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