Belt shredding
Thread Starter
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Senior User
Joined: Sep 2006
Posts: 137
Likes: 1
Belt shredding
I just changed by air pump because it was seized up and now after driving for 3 days the serp belt is starting to shred on the radiator side. The new belt is wider than the old one, could that be the issue?
Cargo Master
Joined: Sep 2004
Posts: 2,690
Likes: 6
The grooves in the belt need to fit into the grooves in the pulleys. maybe you don't have the right belt. The new belt shouldn't be wider than the old one. Compare them side-by-side and the grooves should be the same.
Post Fiend
Joined: Jan 2005
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Why is the new belt wider than the old one, it should be the same?
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Senior User
Joined: Sep 2006
Posts: 137
Likes: 1
Beats me. The old one was a bit more narrow compared to this one. I will have to look when I get home but I think it was a 4 groove and never had a problem until the air pump seized.
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Elder User
Joined: Feb 2008
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From: Four Corners, MT
Make sure you go back and get the exact belt for your motor.
Did you put the right size pullers back on?
Did you put the right size pullers back on?
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Cargo Master
Joined: Sep 2004
Posts: 2,690
Likes: 6
When you say "wider", do you mean thicker? Thicker is OK, but wider is probably not.
Are you sure you ran the belt correctly over all the pulleys?
Dude, this should not be an issue. Put your original belt back on and see if it runs fine. If so then you have the wrong belt.
Are you sure you ran the belt correctly over all the pulleys?
Dude, this should not be an issue. Put your original belt back on and see if it runs fine. If so then you have the wrong belt.
Freshman User
Joined: May 2008
Posts: 30
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Allignment
I had the same problem of the belt riding off of the alternator and harmonic balancer by 1/4 inch and shredding on my 95 5.8 when I bought it.
After 3 belts and destroying the trans cooling lines the mechanist at the auto store I go to diagnosed it for me.
Someone had replaced the powering steering pump and dident drive the pulley all the way on flush with the shaft.
Check to see if all of the pulleys align up.
The air pump pulley may not be in alignment
After 3 belts and destroying the trans cooling lines the mechanist at the auto store I go to diagnosed it for me.
Someone had replaced the powering steering pump and dident drive the pulley all the way on flush with the shaft.
Check to see if all of the pulleys align up.
The air pump pulley may not be in alignment
Freshman User
Joined: Apr 2006
Posts: 27
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From: Norfolk, Va
I had the exact same problem on my truck ('88 4.9 5spd). When I replaced the power steering pump, the pulley was slightly out of alignment and the belt would sort of "shimmy" from side to side as it rode over the pulley. It would shred belts like a fiend (one every three weeks roughly). End result was the pulley had to be pulled forward maybe an 1/8" or less and the problem was solved.
