I dont know if this will help anyone. But i tried to fix my 782 properly. The thread insert in the frame was cracked. It appeared to be bent and i thought it was just an insert that would press out.
I took a hammer and tapped. It flew right out. After picking it up i realized it was cast iron. And also welded in.
So after i completely destroyed it in one tap. It was already broke so thats probably why. I decided i better fix it right. I only have a very small lathe so making the part would be hard without a lathe twice the size of mine.
I was thinking about what i could buy that may already be close. It has a taper so the lift stop cam will hold tight with little effort tightening the bolt. I wanted to keep that taper.
Just simply welding a nut inside the frame was not going to be good enough for me. Plus it would scratch the frame unless you put a washer between.
I thought about it for two days and it hit me, A LUG NUT !!!. It has the taper already. So i ordered a pack of painted steel lug nuts in 3/8 fine thread. I sanded off the paint, cleaned the hole well on the frame.
Before welding it in, i used some valve lapping compound to properly mate the two taper surfaces. This gives it much better grip with very little effort tightening the bolt.
I then screwed the lug nut, cam, and hand screw all together. Placed a temporary washer between the frame and cam to keep even spacing. Then welded it on the inside of the frame. Fits very nice and has the original gap between the frame and cam.
I hope this helps someone that stumbles across this.
Now im almost ready to start painting the frame. For the 100 percent full restoration i am doing.
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