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In this video I repair a box tipper that had excessive wear on the main pivot, both on the shaft and where the bush goes. The gear was also worn and needed turning.

Firstly, I started off by plasma gouging the weld that held the gear on, the gear was still on very tight so heat was applied to help. Once the gear was off, I cleaned it up, turned it over and put back on so that the unused teeth are to the side that meshes with the rack. Then welded it back on.
Next up was to replace the worn main shaft with a new one. This was a bit of a tricky job as there was a lot of weld and butchery going on from the last time it was changed. Again, the plasma was used to gouge the weld away and also the arc air gouger. When the old shaft was removed, the mess that was left behind was ground down, the plate was then placed on the milling machine to find the hole centre before building the hole back up with weld. The hole could then be bored out to 100mm to properly suit the new shaft. The shaft and plate were preheated before welding in.
Last job was to bore the hole where the bush goes back to round again. Rather than put the old style bush back in, I decided to overbore the hole to fit in a thicker type plastic bush. I had to use a high speed steel cutter for this as I was having too much issue with tool chatter.
I used a chain and bottom jack to press the new bush into place.
I then reassembled the two parts to ensure they fit together as indeed and to make it easier to send back to the customer on the pallet.
Quite a lot of work for what seemed a simple job but I wanted to ensure my repair was a lot better than the previous man who was apparently also an agricultural engineer. I want to be known for doing a good job, not a cheap bodge job.

Hope you enjoyed the video.
Thanks for watching.