Get the Helicoil material completely out of the casting. Drill, tap, and bottom tap for threads that will be full depth just bigger than the Helicoil tap used for the poor repair you found. Use grade 8 bolts that have been cut off to just more than the depth of the new tapped holes, then drilled and tapped internally for the 3/4" original size, through their centers (thus making a bushing with big threads on the outside and original threads on the inside) Use Locktite stud and bearing mount juice to seat them into the holes (tighten with a stub bolt in the 3/4" threads) and let them set up over night. Then grind off the excess sticking out, to make nice. Use grade 8 cap screws to remount the plate, with thread lock locktight on those, no lock washers, just heavy thickness flat washers. My best least expense repair. JimN
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Today's Featured Article - Talk of the Town: How to Remove a Broken Bolt - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I have an aluminum steering gear housing with a bolt broken off in it. The bolt is about a 3/8" x 1 1/2" bolt. I've already drilled the center of the bolt out with about 7/64" drill bit the entire length of the bolt. Only one end of the bolt is visible. I tried to use an easy out but it wasn't budging and I didn't want t
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