I finally, after it sat in the driveway for over three years, got a 4100 I had bought for parts running. The previous owner had hit something with the loader really hard and ripped off both mounting blocks where the front end support yokes bolt to the bellhousing. Then he tried to get the sheared out bolts out, unsuccessfully. He must have used heat on one because it is really hard and resists even cobalt drills. I started to grind it out with a carbide burr in a die grinder but had to quit as the burr is dull.
But I managed to back 2 bolts out with a LH drill and clear all but the one hole, and chase them with a tap. But I only have real confidence in 2 of the empty holes. So my main question is: Can I just drill out the dicey 7/16-14 holes and tap to 1/2-13? Also, any suggestion about that one hole with the bolt still in it?
Thanks!
But I managed to back 2 bolts out with a LH drill and clear all but the one hole, and chase them with a tap. But I only have real confidence in 2 of the empty holes. So my main question is: Can I just drill out the dicey 7/16-14 holes and tap to 1/2-13? Also, any suggestion about that one hole with the bolt still in it?
Thanks!