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Taking off crank bolt

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Old Apr 4, 2010 | 07:25 AM
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sktng22's Avatar
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From: Northern NJ
Taking off crank bolt

ok so im about to do my 60k maintenance and i was wondering how much torque on an impact wrench does it take to get this thing off?
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Old Apr 4, 2010 | 09:30 AM
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From: Colorado
122 to tighten. 3/4" impact to get off.
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Old Apr 4, 2010 | 09:42 AM
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yeah but a 3/4 impact at what torque setting? i dont wana buy to small of an impact wrench with not enough torque
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Old Apr 4, 2010 | 09:59 AM
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120 psi air and level 3 on an ingersol rand 3/4" impact should do the trick.
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Old Apr 4, 2010 | 10:05 AM
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any decent half inch drive impact should have no problem breaking that bolt loose. most 1/2" impacts are in the 300 ft/lbs and up range.
i have an ingrasol-rand with 1000 ft/lbs... itll break anything loose
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Old Apr 4, 2010 | 10:58 AM
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Originally Posted by lemmysports2
any decent half inch drive impact should have no problem breaking that bolt loose. most 1/2" impacts are in the 300 ft/lbs and up range.
i have an ingrasol-rand with 1000 ft/lbs... itll break anything loose
ya a good 1/2 impact will work fine
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Old Apr 4, 2010 | 12:36 PM
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I have a cheap 1/2 and it's 600ft lb and works like a charm.
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Old Apr 4, 2010 | 01:15 PM
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i used a 340ft/lb gun with the compressor as high as it would go. Came off.
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Old Apr 4, 2010 | 01:37 PM
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^these, or in the how-to's it says you can use a breaker bar and just the starter motor to break it loose. havnt done it yet but thats my planned route
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Old May 7, 2010 | 08:25 PM
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A follow up to this question is what is the best way to torque that baby back down without the special tool? I've tried making my own tool - first out of aluminum, then out of steel - and bent the tool when attempting to torque it down.

Looking for suggestions and best practice.

Thanks,

Paul
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