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Old 03-31-2013, 09:28 AM
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10 bolt rear end

How do you extract a broken pin bolt in a GM 10 bolt rear end

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Old 03-31-2013, 10:56 AM
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Old 03-31-2013, 01:09 PM
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Is the big pin still iun the rearend?

If it is, I use a small cutoff disc and remove metal until I can turn the broken off poice with a small pic.

Quite often those pins get re-installed by mechanics WAY TOO TIGHT. Then you end up with the issue you are experiencing.

Good luck.

peace
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Old 03-31-2013, 01:18 PM
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You can take the carriers caps off and pull the diff out a little to get more working room.
If there are any threads left at all on the bolt, you can often turn it out with a sharp pick tool.
If all threads are gone, the most straightforward method is to grind the end of the pin until you can push the remaining bolt out. You can also drill a small hole in the diff case to enter the hole where the end of the bolt is located on the opposite side of the pin threaded end and then use air pressure to pus the the bolt out.
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Old 03-31-2013, 04:09 PM
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Quote:
Originally Posted by Hogg View Post
If it is, I use a small cutoff disc and remove metal until I can turn the broken off poice with a small pic.
This is how I did it, but I used a hardened drill bit. You can also use a small grinding stone if necessary. You definitely get the idea that this is a common problem because my local GM dealer had the new cross pin and bolt on the shelf for a 22 year old car!

Simply rotate the carrier until the end of the pin with the bolt is at the best position for working on it. The problem isn't overtightening, the problem is that the hole in the cross pin is much larger than the bolt. Vibration causes it to rotate back and forth in the carrier and bang on the bolt, causing it to fracture eventually.
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Old 03-31-2013, 07:43 PM
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