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

how do i remove alt pulley?

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Old Oct 8, 2004 | 11:49 AM
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Default how do i remove alt pulley?

How do i remove the alt pulley on my 1996 aut lt1?

underdrive pullies....
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Old Oct 8, 2004 | 12:42 PM
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There is a special tool used to pull the pulley off. Go to a Pep Boys or AutoZone and look for it. It's pretty cheap and works well. The tool clamps around the front part of the pulley and uses a bolt to push on the shaft while pulling the pulley off.
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Old Oct 8, 2004 | 12:47 PM
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i would always be very careful and put a screw driver in there and back up the nut? but there is a special tool but if you are careful a screw driver will work
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Old Oct 8, 2004 | 01:31 PM
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kool!
do i need to hold the alt fan still while i back the screw out?
thanks
Sean
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Old Oct 8, 2004 | 03:30 PM
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I was unable to break the nut loose so waited till the alt needed to be replaced and let the shop use an impact wrench to break the nut free and install my overdrive alt pulley.

BTW, they said that they had to grind down a socket to tighten the nut after the overdrive pulley had been installed.
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Old Oct 8, 2004 | 03:31 PM
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Old Oct 8, 2004 | 03:41 PM
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omg i just brok like 5 of the teen on the alt!!! ugh!!!!
the guy at autozone told me to put a screw driver in it!! that jackass
what should i do i cant get it loose and dont have an impact wrench
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Old Oct 8, 2004 | 04:18 PM
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Most mechanics will use an impact wrench. Very quick and easy. Just don't over-do it.

Oops....you said under drive......not sure. I know on regular alt it's right off and right on in a snap.

Last edited by drumboytroy; Oct 8, 2004 at 04:20 PM.
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Old Oct 8, 2004 | 05:50 PM
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Originally Posted by redbullapril23
omg i just brok like 5 of the teen on the alt!!! ugh!!!!
the guy at autozone told me to put a screw driver in it!! that jackass
what should i do i cant get it loose and dont have an impact wrench
Generally speaking, Autozone and other cut-rate parts stores MAY not be the best source for technical advice....
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Old Oct 8, 2004 | 06:21 PM
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well yea they are not the best
but they said that and someone on here told me too.


taking the alt off and taking it to the vette tech for my vette group hes doing it for free!
said that the alt fans can be either metal or plastic
mine being plastic
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Old Oct 8, 2004 | 06:24 PM
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I used an impact socket fit fine. If it is an underdrive pully it will be larger than the stock one... Good Luck.
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Old Oct 8, 2004 | 06:29 PM
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it uses the same bolt for the new one!
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