The Ford Barn

Mountain Dew · 01-08-2024, 02:08 PM

The fan belt on my Runabout keeps slipping off. I've tried tightening and loosening but still slips off. What is causing that?

J Franklin · 01-08-2024, 02:42 PM

The pulleys need to be parallel and have a slight crown. Check carefully what you have.

Mountain Dew · 01-08-2024, 06:49 PM

I noticed a set screw on the water pump pulley. I will try adjusting it and see if it stays on better.

J Franklin · 01-08-2024, 08:45 PM

It might just be the photo angle, but are the centers of each pully in line?

Mountain Dew · 01-08-2024, 09:27 PM

I'll check the center alignment of the pulleys. I'm concerned about how close the belt is to the timer.

J Franklin · 01-08-2024, 11:30 PM

Sponsored Links (Register now to hide all advertisements)

The distance to the timer is normal. The pully on the crank sets that.

jimvette59 · 01-09-2024, 09:25 AM

Try a straight edge on the outside flat surfaces of the pulleys. Make adjustments. JMHO

15max · 01-11-2024, 02:55 PM

I have used these guides that just bolt to a timing cover bolt.

Oldcarbearings · 01-11-2024, 06:42 PM

Try a slightly smaller ID belt ,
That way it's sits tightly in the groove,
Also use CRC belt grip to help lubricate the belt.

ronn · 01-16-2024, 01:41 PM

a Gates belt might slip less as well.

Mountain Dew · 01-20-2024, 11:00 AM

I removed the water pump and i'm seeing how things go. It leaked and I tried installing new packing with poor results. The belt slipping off problem is solved. I'll find out if my radiator is in good shape this summer if not before.

01-08-2024, 02:08 PM	#1
Mountain Dew Senior Member Join Date: May 2010 Location: Newport, NC Posts: 195	Fan Belt Slips Off The fan belt on my Runabout keeps slipping off. I've tried tightening and loosening but still slips off. What is causing that?

01-08-2024, 02:42 PM	#2
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,963	Re: Fan Belt Slips Off The pulleys need to be parallel and have a slight crown. Check carefully what you have.

01-08-2024, 08:45 PM	#4
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,963	Re: Fan Belt Slips Off It might just be the photo angle, but are the centers of each pully in line?

01-08-2024, 09:27 PM	#5
Mountain Dew Senior Member Join Date: May 2010 Location: Newport, NC Posts: 195	Re: Fan Belt Slips Off I'll check the center alignment of the pulleys. I'm concerned about how close the belt is to the timer.

01-08-2024, 11:30 PM	#6
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,963	Re: Fan Belt Slips Off Sponsored Links (Register now to hide all advertisements) The distance to the timer is normal. The pully on the crank sets that.

01-09-2024, 09:25 AM	#7
jimvette59 Senior Member Join Date: Jun 2010 Location: Perry OH Posts: 1,330	Re: Fan Belt Slips Off Try a straight edge on the outside flat surfaces of the pulleys. Make adjustments. JMHO

01-11-2024, 06:42 PM	#9
Oldcarbearings Member Join Date: Sep 2020 Location: North Warrandyte, Melbourne,Victoria, Australia Posts: 68	Re: Fan Belt Slips Off Try a slightly smaller ID belt , That way it's sits tightly in the groove, Also use CRC belt grip to help lubricate the belt.

01-16-2024, 01:41 PM	#10
ronn Senior Member Join Date: Feb 2011 Location: NNNNNNNNJJJJJJJJJJ Posts: 6,792	Re: Fan Belt Slips Off a Gates belt might slip less as well.

01-20-2024, 11:00 AM	#11
Mountain Dew Senior Member Join Date: May 2010 Location: Newport, NC Posts: 195	Re: Fan Belt Slips Off I removed the water pump and i'm seeing how things go. It leaked and I tried installing new packing with poor results. The belt slipping off problem is solved. I'll find out if my radiator is in good shape this summer if not before.