[mjr6550]

I have a small issue with a trailer hitch and I am thinking about trying to solve it using my O/A torch. This is more for practice than need. I have an adjustable trailer hitch where the balls (two sizes on opposite ends of a square bar) attach into a channel with two steel pins. The pins are slightly undersized (I have not taken any measurements). They are undersized enough so that there is noticeable movement when I start or stop moving.

One thought was to build up surface of the pins by brazing. I realize this is soft and may not last, but I use the trailer very little, and it is less than 2000 pounds. The other thought is to build up the pins by O/A welding. I have done very little brazing and no welding. If I build it up too far I can chuck in into a lathe and turn or file it down.

I have 240 volt AC arc welder and 120 volt mig, but feel like playing with O/A. Also, assuming the Chinese pins are hardened steel (?), not sure about welding. I also through about partially filling in the holes on the channel and drilling or reaming them, but the channel is powder coated so I'd rather not fool with it.

[MinnesotaDave]

Because you have a lathe, I figure you must have proper measuring tools.

Measure the holes, see if bolts are the right size, or standard pins.

If not, I would buy material and machine to desired tolerance.

Practice on the pins anyway - then toss in the scrap barrel.

[mjr6550]

Using the lathe would be an option, but I have too many more important or interesting things do do with the lathe. This isn't a pressing need, more like an excuse to learn or practice. I never seem to find the time to learn new things or practice things unless I have a reason or excuse.

[cj737]

Smarter to simply sleeve the pin than to build it up as the build up would likely require machining it to true the OD for fitment.