The Ford Barn

donQ · 08-29-2011, 08:55 AM

Is there an easy way to install the fan belt? I rebuilt a generator and installed it on my 29. I purchased a new cogged belt from NAPA (5/8 x 43 PN 25-20426). The generator mount bolt was loosened and the generator rotated in until it touched the block. The belt was slipped over the crank and fan pulleys and then I attempted to work it on to the generator pulley. I was finally able to get the belt on but I was concerned that I'd have to ruin the belt to force it on. Is there some easy way of doing this?

Steve Plucker · 08-29-2011, 09:04 AM

Maybe you got a smaller belt then normally used...it should of not been that hard to do!

Pluck

Ned · 08-29-2011, 09:05 AM

I use a 44" belt, generic part number is 5L440. Most auto parts places carry them. Easy to install even wiht a power house generator.

Ron Lowe · 08-29-2011, 12:01 PM

The pulley on the generator is on a tapered shaft. Take the bolt out that holds the pulley on and it will come off easy. Now you can put the belt on the pulley and then onto the shaft. Should be alot easier this way. Good luck Ron

donQ · 08-29-2011, 06:52 PM

Thanks for the suggestions. I think Ron's idea to remove the pulley is a good one. I'll check into the longer belt for a spare to carry along the road.
Don

Ned · 08-30-2011, 09:53 PM

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I have seen the pulley get stuck on the tapered shaft and would be hard to remove with the generator mounted on the engine. You can loosen the nut, hold the generator up by the pulley and tap the end of the shaft. It will normaly break free.

Milton · 08-30-2011, 10:08 PM

I used to do this by putting the belt on the crank and generator pulleys and then start the belt on the fan pulley and pull on a fan blade to rotate the belt on.

james hitchcock · 08-30-2011, 10:16 PM

Really sounds like the belt is just too small. Never had any trouble .

Fred K-OR · 08-30-2011, 10:25 PM

Quote:

Originally Posted by Ron Lowe

The pulley on the generator is on a tapered shaft. Take the bolt out that holds the pulley on and it will come off easy. Now you can put the belt on the pulley and then onto the shaft. Should be alot easier this way. Good luck Ron

Ron's way is the only way I found to get my belt on. Mine is a current aftermarket belt that is suppose to be for an A but they don't fit well.

Steve Plucker · 08-30-2011, 11:49 PM

Just get a larger belt then the one you have...that way you will not have to take things apart! Just losen up the generator, slip the belt on, then adjust the generator to the proper belt tension...Plain and simple.

Pluck

Glen in Hillman MI · 08-31-2011, 07:21 AM

I use a NAPA-B41, it fits well and last for miles. [15,000 PLUS]
Glen

Larry Seemann · 08-31-2011, 06:54 PM

I use the NAPA B41 also. Taking the generator off, fitting the belt in the pulley, and reinstalling the generator also works.

Elcastor · 08-31-2011, 06:59 PM

I agree with those that said just get the next size longer belt. I have never had the problem you are experiencing.

reek29 · 08-31-2011, 07:08 PM

The 25-20426 belt is one that I went to when I installed an alternator. The alternator pulley is significantly smaller in diameter than the generator pulley, and I had problems with the belt being loose with a standard lenth belt. I think the others are right when they suggest going to a normal size belt, available from any of the parts vendors. Good luck.

08-29-2011, 08:55 AM	#1
donQ Senior Member Join Date: Apr 2011 Posts: 146	fan belt installation Is there an easy way to install the fan belt? I rebuilt a generator and installed it on my 29. I purchased a new cogged belt from NAPA (5/8 x 43 PN 25-20426). The generator mount bolt was loosened and the generator rotated in until it touched the block. The belt was slipped over the crank and fan pulleys and then I attempted to work it on to the generator pulley. I was finally able to get the belt on but I was concerned that I'd have to ruin the belt to force it on. Is there some easy way of doing this?

08-29-2011, 09:04 AM	#2
Steve Plucker BANNED Join Date: May 2010 Location: Walla Walla, Washington USA Posts: 6,066	Re: fan belt installation Maybe you got a smaller belt then normally used...it should of not been that hard to do! Pluck

08-29-2011, 09:05 AM	#3
Ned Member Join Date: May 2010 Location: Maryland Posts: 51	Re: fan belt installation I use a 44" belt, generic part number is 5L440. Most auto parts places carry them. Easy to install even wiht a power house generator.

08-29-2011, 12:01 PM	#4
Ron Lowe Senior Member Join Date: May 2010 Posts: 184	Re: fan belt installation The pulley on the generator is on a tapered shaft. Take the bolt out that holds the pulley on and it will come off easy. Now you can put the belt on the pulley and then onto the shaft. Should be alot easier this way. Good luck Ron

08-29-2011, 06:52 PM	#5
donQ Senior Member Join Date: Apr 2011 Posts: 146	Re: fan belt installation Thanks for the suggestions. I think Ron's idea to remove the pulley is a good one. I'll check into the longer belt for a spare to carry along the road. Don

08-30-2011, 09:53 PM	#6
Ned Member Join Date: May 2010 Location: Maryland Posts: 51	Re: fan belt installation Sponsored Links (Register now to hide all advertisements) I have seen the pulley get stuck on the tapered shaft and would be hard to remove with the generator mounted on the engine. You can loosen the nut, hold the generator up by the pulley and tap the end of the shaft. It will normaly break free.

08-30-2011, 10:08 PM	#7
Milton Senior Member Join Date: Oct 2010 Posts: 837	Re: fan belt installation I used to do this by putting the belt on the crank and generator pulleys and then start the belt on the fan pulley and pull on a fan blade to rotate the belt on.

08-30-2011, 10:16 PM	#8
james hitchcock Senior Member Join Date: May 2010 Location: Visalia Ca. Posts: 617	Re: fan belt installation Really sounds like the belt is just too small. Never had any trouble .

08-30-2011, 11:49 PM	#10
Steve Plucker BANNED Join Date: May 2010 Location: Walla Walla, Washington USA Posts: 6,066	Re: fan belt installation Just get a larger belt then the one you have...that way you will not have to take things apart! Just losen up the generator, slip the belt on, then adjust the generator to the proper belt tension...Plain and simple. Pluck

08-31-2011, 07:21 AM	#11
Glen in Hillman MI Senior Member Join Date: May 2010 Posts: 107	Re: fan belt installation I use a NAPA-B41, it fits well and last for miles. [15,000 PLUS] Glen

08-31-2011, 06:54 PM	#12
Larry Seemann Senior Member Join Date: May 2010 Location: Spokane, WA. Posts: 496	Re: fan belt installation I use the NAPA B41 also. Taking the generator off, fitting the belt in the pulley, and reinstalling the generator also works. __________________ Larry Seemann

08-31-2011, 06:59 PM	#13
Elcastor Senior Member Join Date: Oct 2010 Location: Oregon and Baja Mexico Posts: 617	Re: fan belt installation I agree with those that said just get the next size longer belt. I have never had the problem you are experiencing. __________________ Ben Purkey Mexico and the Pacific NW http://www.martin-parry.com/

08-31-2011, 07:08 PM	#14
reek29 Member Join Date: Sep 2010 Posts: 42	Re: fan belt installation The 25-20426 belt is one that I went to when I installed an alternator. The alternator pulley is significantly smaller in diameter than the generator pulley, and I had problems with the belt being loose with a standard lenth belt. I think the others are right when they suggest going to a normal size belt, available from any of the parts vendors. Good luck.