Chevy and GMC Duramax Diesel Forum - View Single Post - harmonic balancer help
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post #5 of (permalink) Old 11-11-2019, 09:44 AM
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Join Date: Sep 2012
Location: Prince George, BC
Posts: 6,639
With all the belts off, put the breaker bar handle against the alternator pulley. Buddy of mine carefully held mine there, then just give the ignition a quick crack (just a split second, literally). If it doesnt break that bolt loose, then you may need the hulk.

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