C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

underdrive pulley install

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Old Dec 24, 2006 | 06:07 PM
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Default underdrive pulley install

I just got march underdrive pulleys for my 87, but I can't get the pulleys off the alternator or water pump pulleys, even tried a strap wrench and a breaker bar. but nothing seems to work. just wondering if anyone has any ideas, thanx in advance
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Old Dec 24, 2006 | 06:15 PM
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Alternator nut will require impact gun. Water pump should be able to be loosened by hand maybe shocking them loose with a small hammer on the rachet or breaker bar while someone else holds the pulley still. It helps immensely to loosen them with the belt still installed.
John
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Old Dec 24, 2006 | 06:39 PM
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I used a gear puller. http://www.northerntool.com/webapp/w...70_13315_13315

Last edited by Kool88vette; Dec 24, 2006 at 06:44 PM.
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Old Dec 24, 2006 | 06:59 PM
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Old Dec 24, 2006 | 07:25 PM
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Originally Posted by Kool88vette
i don't think he needs a gear puller ,he just wants the stop the pulley from spinning to take the bolts off.the alt you need a impact gun and the water pump i just keep a old belt around for things like this i wrap a old six rib belt around the w/p pulley use a 1/2 inch ratchet to twist the belt until its tight around the pulley and the ratchet acts like a wedge then you can remove the bolts.its not pretty but it always works for me
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Old Dec 24, 2006 | 07:44 PM
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I guess I misunderstood your question. I changed my alternator, waterpump, Harmonic balancer and all my pullys. I used March Pullys, they're great.

Last edited by Kool88vette; Dec 24, 2006 at 07:56 PM.
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Old Dec 24, 2006 | 08:50 PM
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I agree with smoke show.
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Old Dec 24, 2006 | 11:20 PM
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Originally Posted by JOHN89
I agree with smoke show.
I guess I drank too much egg nog. Happy Holidays!
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Old Dec 25, 2006 | 03:52 PM
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i got 2 pulleys off so far, just gotta get the water pump off, but it shouldn't be hard with all the good advice. i used a socket welded to a tire iron and a mallet to get the alt pulley off. thanx for all of the help
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