problem with pulley replacing OptiSpark - Chevy Impala SS Forum
 
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post #1 of 4 (permalink) Old 03-30-2013, 05:54 PM Thread Starter
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problem with pulley replacing OptiSpark

Hi I have a 94 sedan and I am trying to replace the optispark.

It has the heavy duty trailering with the extra mechanical fan.

My problems is there seems to be an extra pulley on the harmoninzer I cant get off.

There were three smaller bolts I could get off but there are three bolts that I am assuming are in the harmonizer, I think the pulley should just slide off but it isn't..

Any help is appreciated.

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post #2 of 4 (permalink) Old 03-30-2013, 07:02 PM
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Yep, you will need a balancer puller to remove the second balancer. 100 bucks to rent at the auto store and they will give it back to you when you return it. The much smaller holes is what will be used with the puller bolts and to ultimately remove the pulley.

1996 Chevy Impala SS BBB -
R.I.P. 4/15/2012

1996 Chevy Impala SS DGGM -
Replaced BBB on 4/30/2012
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post #3 of 4 (permalink) Old 03-30-2013, 07:17 PM Thread Starter
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I cant seem to get the pulley off, can I just remove the pulley and balancer at one time? and then put them back on together again?

If so, I don't seem to be able to get those 3 harmonizer nuts off, when I try, the pulley and harmonizer just turn. Do I need like and air wrench or something with a lot of instant torque?

thank you
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post #4 of 4 (permalink) Old 03-30-2013, 07:24 PM
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Those bolts are a pain in the ass. Ive heard of shops and dealers using impacts on those bolts. I never resorted to that because of some of the information ive heard of "banging" or "striking" the balancer with an object like a hammer, and i would think an impact is no different (in my opinion).

To the point i use 2 socket wrenches. 1 to hold the crank in place, the other to loosen the bolts. That method has always worked for me, despite the pain medicine later on and possible stitches once those bolts break loose from the hub. LOL, not too bad though. Just be mindful you still need a puller. Still to this day, i have no idea how i got one of those off by hand at a junkyard one day. LOL... Anywho,

1996 Chevy Impala SS BBB -
R.I.P. 4/15/2012

1996 Chevy Impala SS DGGM -
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