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

need help removing pulley

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Old May 17, 2008 | 04:52 PM
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Default need help removing pulley

How do I remove the pulley thats right under the opticspark. Its just keeps moving around. I'm changing my optispark today.
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Old May 17, 2008 | 05:12 PM
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you need to use 2 sockets, one to remove the bolts holding on the balancer, and the other to hold the center crank bolt(counter force). I can't remember the bolt size on the center bolt...sorry.....(also be mindful that you may loosen the crank bolt)

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Old May 17, 2008 | 05:47 PM
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Default help

I got all the bolts out. Now that thing is stuck. Now what?
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Old May 17, 2008 | 06:05 PM
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Originally Posted by pt
I got all the bolts out. Now that thing is stuck. Now what?
Do a search on "balancer removal". Most guys get under the car and patiently tap it off, right side, left side, right side, left side.... I think they use 2X4's. I was lucky and mine was loose enough to wiggle off by hand....

Aslo, you might hit it with PB blaster to help break up the years of oxidation....this will facilitate in removal..

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Old May 17, 2008 | 06:05 PM
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Special tool is required to pull the balancer. If you do not use the proper tool to R&R it, you will damage it AND your crankshaft.

Go to a parts store and rent one.

Be warned: The tool is too long to use with the AC condenser installed.

Do you really need to remove it?
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Old May 17, 2008 | 06:28 PM
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if you decide to do it the "correct" way, and can rent the Kentmore pully/balancer removal tool, here's a thread with some good info, and a picture of the tool:

http://forums.corvetteforum.com/show...lancer+removal

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Old May 17, 2008 | 06:35 PM
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No special tool is needed to remove the balancer/dampner. Remove three bolts, and if it's rusted on tap off.

The Kent-Moore tool is for the balancer's hub.
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Old May 17, 2008 | 06:36 PM
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Originally Posted by williammackean
Special tool is required to pull the balancer. If you do not use the proper tool to R&R it, you will damage it AND your crankshaft.

Go to a parts store and rent one.

Be warned: The tool is too long to use with the AC condenser installed.

Do you really need to remove it?
The balancer does not require a tool for removal. Once the 3 bolts are out that secures it to the hub, it will come off. It's it's frozen to the hub, then it can be gently tapped off using a 2x2 and occasionally rotating the engine so you work one side loose and then the other until it "walks" off the hub.

The hub can be removed with a regular puller. It's a tight fit but in no way comes in contact with the ac condenser. For LT1/4 engines, GM has a specific tool that makes hub removal a 5 minute job.

Here is a conventional puller I used on my engine during one of my cam swaps...



Here is the GM tool I bought...

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Old May 17, 2008 | 06:39 PM
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Default help

Thanks, got it out, tap tap tap. and and big tap from under the car.
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Old May 17, 2008 | 06:43 PM
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Originally Posted by 96GS#007
The balancer does not require a tool for removal. Once the 3 bolts are out that secures it to the hub, it will come off. It's it's frozen to the hub, then it can be gently tapped off using a 2x2 and occasionally rotating the engine so you work one side loose and then the other until it "walks" off the hub.

The hub can be removed with a regular puller. It's a tight fit but in no way comes in contact with the ac condenser. For LT1/4 engines, GM has a specific tool that makes hub removal a 5 minute job.

Here is a conventional puller I used on my engine during one of my cam swaps...



Here is the GM tool I bought...

great info. and advice Jim.... but all he needs to do is tap off the balancer as you suggested, no need to mess with the hub... since he is only replacing his Opti.

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