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Chevy 454 fanbelt keeps jumping off?
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<blockquote data-quote="CHOP SHOP" data-source="post: 1475907" data-attributes="member: 17493"><p>stop buying belt at vatozone or shmucks.</p><p></p><p>either you have a chunky rotator or a bent pulley or a missalignment issue.</p><p></p><p>I would look at the alternator and make sure its (not shimmed out but square) square to the other pulleys. Alt brackets on chevys tend to let the alt tip in a bit. Take a two foot chunk of straight flatbar or a metal ruler and place it across the pulleys and see if any are "tipped".</p><p>If all checks out and it still spits, then I head to the tractor shop and get a green AG belt and tighten the **** out of it.</p><p></p><p></p><p>Belts are real simple. Remember how wobbly that crappy ol riding lawn mower belt is and it stays on in a horizontal position too.</p><p></p><p></p><p>I wouldnt worry about crank endplay. I have a motor in my jetboat that has .13 thou of end thrust. It will visibly shock ya when it moves and is easy to see. It came out of my old crewcab that I drove for years and never shot off a belt.</p></blockquote><p></p>
[QUOTE="CHOP SHOP, post: 1475907, member: 17493"] stop buying belt at vatozone or shmucks. either you have a chunky rotator or a bent pulley or a missalignment issue. I would look at the alternator and make sure its (not shimmed out but square) square to the other pulleys. Alt brackets on chevys tend to let the alt tip in a bit. Take a two foot chunk of straight flatbar or a metal ruler and place it across the pulleys and see if any are "tipped". If all checks out and it still spits, then I head to the tractor shop and get a green AG belt and tighten the **** out of it. Belts are real simple. Remember how wobbly that crappy ol riding lawn mower belt is and it stays on in a horizontal position too. I wouldnt worry about crank endplay. I have a motor in my jetboat that has .13 thou of end thrust. It will visibly shock ya when it moves and is easy to see. It came out of my old crewcab that I drove for years and never shot off a belt. [/QUOTE]
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