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C5 crank pulley

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Old May 19, 2013 | 07:02 PM
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Default C5 crank pulley

So, crank pulley bolt. Right or left hand threads?
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Old May 19, 2013 | 07:04 PM
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Originally Posted by MadDog87
So, crank pulley bolt. Right or left hand threads?
Righty tighty, lefty loosey
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Old May 19, 2013 | 07:13 PM
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Originally Posted by dblerman
Righty tighty, lefty loosey
And it was torqued to 240ft-lbs. Good luck i hope you got a good impact.
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Old May 19, 2013 | 07:19 PM
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Originally Posted by helga203
And it was torqued to 240ft-lbs. Good luck i hope you got a good impact.
A good impact will only help him get the old bolt off, I'd hope he has a good method for correctly installing and torquing the new bolt.
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Old May 19, 2013 | 08:31 PM
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Yup, knew about the torque-to-yield, but even my C4 guru friends couldn't answer the righty tighty question. The outer belt groove had moved all the way to the inside belt groove, causing the serpentine belt to jump off the pulley.
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Old May 19, 2013 | 09:14 PM
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Default Crankshaft pulley removal

I can't believe YouTube came to my aid. Used the starter to remove the pulley bolt. Watched which way the crank turned, and wedged the breaker and socket to a solid surface. Came out slicker than I thought. Just remember to explain twice to your wife that you just want her to bump the starter.
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Old May 19, 2013 | 09:31 PM
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Originally Posted by MadDog87
I can't believe YouTube came to my aid. Used the starter to remove the pulley bolt. Watched which way the crank turned, and wedged the breaker and socket to a solid surface. Came out slicker than I thought. Just remember to explain twice to your wife that you just want her to bump the starter.
Good way to trash your crank snout. Our crank/balancers aren't keyed, and you run the risk of spinning the balancer on the crank using that method.
So now I have to ask, how do you plan on installing the new bolt?
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Old May 20, 2013 | 12:38 AM
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Default Crank pulley removal

No damage whatsoever. Realize not keyed, but pulley was fully seated. Chevy dealership mechanic agreed with the method when left with no alternative.
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Old May 20, 2013 | 02:29 AM
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Old May 20, 2013 | 02:44 AM
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Originally Posted by MadDog87
No damage whatsoever. Realize not keyed, but pulley was fully seated. Chevy dealership mechanic agreed with the method when left with no alternative.
Just because he agreed doesn't mean he is correct.
So how do you plan on torquing the new bolt?
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Old May 20, 2013 | 05:19 AM
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Originally Posted by MadDog87
I can't believe YouTube came to my aid. Used the starter to remove the pulley bolt. Watched which way the crank turned, and wedged the breaker and socket to a solid surface. Came out slicker than I thought. Just remember to explain twice to your wife that you just want her to bump the starter.
Couple of people broke the block casting with this method, you got lucky. You might want to consult the service manual prior to installation as the number of wrecked crankshaft snouts due to improper installation at this point is too many to count.
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Old May 20, 2013 | 07:55 AM
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Thanks, will check that out. As said, the ZO6 this was performed on had no issues. Will definitely use the proper method for install.
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