Fan Belt Slips Off

[Mountain Dew]

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]

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

 

[Mountain Dew]

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

 

[J Franklin]

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

 

[Mountain Dew]

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

 

[J Franklin]

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

 

[jimvette59]

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

 

[15max]

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

 

[Oldcarbearings]

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]

a Gates belt might slip less as well.

 

[Mountain Dew]

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.