Crank pulley bolt frozen... - Chevy and GMC Duramax Diesel Forum
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Old 05-30-2007, 05:23 PM   eBay Motors  #1 (permalink)
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Crank pulley bolt frozen...

My local GMC dealer got my '01 Duramax for a water pump replacement yesterday. Today he calls with a sob story about a frozen crank pully bolt. He says they broke a 24" breaker bar, and even tried to crank the engine with a breaker bar to no avail. He's now talking about a "new cranKshaft", which will be thousands of dollars. He's heated the bolt and says he's out of ideas (as is the GM tech he talked to).

Any suggestions to save lots of money?

Last edited by mikeo; 05-30-2007 at 05:25 PM.
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Old 05-30-2007, 07:24 PM   eBay Motors  #2 (permalink)
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Anyone i have done i used a big 3/4 inch air gun, zings it right off! but yeah they are a tight mofo!!!
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Old 05-31-2007, 04:26 AM   eBay Motors  #3 (permalink)
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pb parts blaster. spray it with that and let it sit over night then use a impact
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Old 05-31-2007, 12:57 PM   eBay Motors  #4 (permalink)
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Its not frozen, its called "tight". The torque spec on that bolt is 250 ft lbs.

A 3/4 drive setup is almost mandatory for these. Tell your dealer to quit whining..LOL
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Old 05-31-2007, 01:12 PM   eBay Motors  #5 (permalink)
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Originally Posted by dmaxalliTech View Post
Its not frozen, its called "tight". The torque spec on that bolt is 250 ft lbs.

A 3/4 drive setup is almost mandatory for these. Tell your dealer to quit whining..LOL
LOL.....had to laugh at this post....YOU TELL THEM....you see....that's the nice thing about this forum....you don't just have to be a victim for your service shop.....:rockin
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Old 05-31-2007, 10:25 PM   eBay Motors  #6 (permalink)
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Ummm what does the crank pulley have to do with the water pump? Also if they are having problems they should atleast do the crank for free labor and you pay for the crank at most to be fair. Also, IMO heating the bolt would be the WORST thing to do. The oil pan gasket and the front main seal are usually rubber or silicon which would be disfigured if heated. So Id be looking out for oil leaks in the future.
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Old 06-17-2007, 06:52 PM   eBay Motors  #7 (permalink)
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Question left or right

are the threads left or right to take the bolt off the crank ?
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Old 06-17-2007, 08:37 PM   eBay Motors  #8 (permalink)
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It's off. After 4 days of PB soaking and the 3/4" impact wrench, it's done. To answer your question, the threads were standard, not reverse.
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Old 06-17-2007, 08:47 PM   eBay Motors  #9 (permalink)
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Unhappy good job

did you have to remove the radator to make room for the 3/4 impact wrench i am working on one right now doing water pump job.
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Old 06-18-2007, 05:57 AM   eBay Motors  #10 (permalink)
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did you have to remove the radator to make room for the 3/4 impact wrench i am working on one right now doing water pump job.
Yes, I'm told the radiator had to come out for access.
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