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Pinion nut stuck. Help needed

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Old Aug 7, 2015 | 06:14 PM
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Default Pinion nut stuck. Help needed

Hi guys. I have the differential otta our 1980 and need to replace pinion seal but i cant get the nut to budge. Big breaker bar and all that happens is it seems to slip internally but the nut doesnt break loose. Any ideas?

Last edited by fathernson; Aug 7, 2015 at 06:47 PM.
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Old Aug 7, 2015 | 06:53 PM
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I had to hold the sideshafts in place with 24" long cresent wrenches (pipe wrenches will work also).....then I used the 36" long breaker bar and socket to loosen the pinion nut.

I HAVE had to use a sharp chisel and hammer to cut the pinion nut off of a pinion shaft before (someone used red thread-locktite to hold the nut in place!)
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Old Aug 7, 2015 | 07:02 PM
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Thanks. But i tried that. What happens i think is the side yokes hold but internally simething slips. Wierd

Last edited by fathernson; Aug 7, 2015 at 07:04 PM.
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Old Aug 7, 2015 | 07:45 PM
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You need a tool that holds the flange on the pinion. The posi inside slips when you hold the side yokes. Look at the Ratech 18002. It's about $30. It also works great to hold when you tighten the pinion nut as well.
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Old Aug 7, 2015 | 08:08 PM
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Indeed! That makes sense. Thank you!
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Old Aug 7, 2015 | 08:33 PM
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Use an impact wrench. It'll come off in a jiffy.
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Old Aug 7, 2015 | 08:39 PM
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Originally Posted by toobroketoretire
Use an impact wrench. It'll come off in a jiffy.
Yup my 1/2 impact has never failed to take one of these off.
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Old Aug 7, 2015 | 09:56 PM
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After failing to get one loose I took a torch and heated it and that did the trick. I remember thinking man I hope there are no fumes leaking from the tank.
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Old Aug 8, 2015 | 03:42 PM
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Big ol pipe wrench on the yoke and a 5 foot pipe on the end of my ratchet and it came off like nothin was even holdin it on. Thanks again for the help guys. Cheers!
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Old Aug 8, 2015 | 04:01 PM
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Originally Posted by fathernson
Big ol pipe wrench on the yoke and a 5 foot pipe on the end of my ratchet and it came off like nothin was even holdin it on. Thanks again for the help guys. Cheers!
OOOOOOOOPS! I don't have the fancy Posi-track.....but the big wrench on the yoke is even better!
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Old Aug 8, 2015 | 04:17 PM
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Originally Posted by toobroketoretire
Use an impact wrench. It'll come off in a jiffy.
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