Damaged bolt threads

Hope this helps..... ..... .Ed
'52 8N475798

But I would add one suggestion .Use a little valve grinding compound to the threads . Themn when you crank the nut back and forth ,the misplaced part of the threads will get ground off .

I had to do that on a Cockshutt 30 that someone turned a nut on the crankshaft that had different threads . I used a hacksaw blade that i ground the edge (side)of the teeth so that they came to a point . The teeth still sawed the threads enough . once I got the proper nut started , I used the grinding compound .
I took about a day of very intense work ,but the price of a new crank ?????

Hope this helps .

There are things called thread chasers. Basically like a clamp the has a cutter on it. You start it on a good part of the thread and tighten it up (kinda like a pipe cutter) and then rotate the whole thing into the bad area. The little cutter will reform the threads. There is also a device called a thread file that can be used to clean up the threads but they dont work nearly as well. If all else fails, try getting the die from ENCO. They seem to have all the exotic stuff for pretty short bux. Good luck, let us know how you make out.

Joe