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03-24-2014, 07:57 PM | #1 |
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Join Date: Mar 2013
Location: Ft.Mill, south carolina
Posts: 52
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fan belt replacement
I am in the process of replacing the alternator and belt on a 1930 Model A motor(installed in my 1928 sedan by the previous owner) The belt is getting brittle and the alternator is in poor condition. My question is what size belt should I buy? The one I have is a modern belt that is cogged. One vendor states 43" another said a 44". Any help would be greatly appreciated.
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03-24-2014, 08:08 PM | #2 |
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Join Date: May 2010
Location: Sacramento Ca
Posts: 1,179
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Re: fan belt replacement
i would take the belt off
and take it to the dealer Napa is a good one ,and let them measure it if it fits fine now ,a new one will fit just as good what you have now is anyones guess tom |
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03-24-2014, 08:35 PM | #3 |
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Location: Luck WI
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Re: fan belt replacement
NAPA sells a cog belt for Model A's that works great. It is listed in their book for 1929-1931 Ford Model A's.
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Jon "If you choose to not decide, you still have made a choice!" RUSH Don't tell me what you know..... Tell me what you have done. |
03-25-2014, 08:43 AM | #4 |
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Location: Cow Hampshire
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Re: fan belt replacement
I did the cog-belt thing from NAPA and found that the belt rode too low in the groove and I was having problems adjusting the generator to take up the slack.
Complaining to my friend Tam (of the Model A Parts vendor Tam's) about this he asks if I had an original fan or a later fan (later aftermarket but not aluminum) Then he asks if I was running a long generator or a power house (long) "Here" he says "try this," handing me a belt. "A lot of trouble sizing a belt now since a lot of the aftermarket belts are now being manufactured to metric standards - and being named a "B" section belt but are not." He also indicated that I would do best to remove the generator pulley and slip the belt and pulley on together. "It would go on easiest this way" he said. It went EXACTLY as he said. And surprisingly, his belt was about $2 less than the cog belt from NAPA. So I bought two more the next time I saw him at Amherst. Success is where you find it though. Joe K
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03-25-2014, 08:48 AM | #5 |
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Location: Largo Florida
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Re: fan belt replacement
Since the alternator is in 'poor' condition, are you replacing it too ? If so, have you considered installing a generator ?
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02-19-2015, 04:55 PM | #6 | |
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Re: fan belt replacement
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Quote:
Can't see who the mfg. was. Only numbers on belt are ' 42-6324'. I assume the "42" is the length. Looks like a 44 inch may be in order here too. Can't be healthy to have that kind of a bind against the bearings. This is on an Autolite long genny. What do you guys run? I have very little room for deflection as in there ain't any as they say! Thanks, |
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02-19-2015, 11:32 PM | #7 |
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Re: fan belt replacement
I take the generator pulley off when changing a belt.
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02-20-2015, 03:46 AM | #8 |
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Join Date: May 2010
Location: Mpls, MN
Posts: 27,582
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Re: fan belt replacement
You can take your belt to the store and buy the next size longer. If your belt was too tight a belt 1" longer should be plenty long. 1" makes a big difference on the Model A.
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02-20-2015, 09:41 AM | #9 |
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Join Date: May 2010
Location: Central, IL
Posts: 3,968
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Re: fan belt replacement
dont get too long of a belt tho as the generator may rub the lower water pipe and or the pulley/belt rub on the rubber hose between the water pipe and lower radiator outlet.
good to know about the aluminum fans belt riding higher!
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02-20-2015, 01:32 PM | #10 |
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Join Date: May 2010
Posts: 2,804
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Re: fan belt replacement
That must be what's going on. Put a new two blade aluminum fan on some time back, now when I'm taking off the fan belt it is a lot tighter to get off the generator pulley. 42" belt.
Will seek out a 43" belt thanks for the feedback. |
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