I moved my work bench and toolbox next to the unfinished wall to make room for my neighbor's tractor/loader.
This was the first real repair job in my new shop.
Please excuse the mess.
After ~10 or ~12 years, the loader cylinders seal began to leak at the rod ends. I disassembled all 4 cylinders to install new seals.
The worst one had a few dings on the rod. I first checked the price of a new rod and the local dealer wanted ~$700.

I cleaned the rod and mixed a small amount of JB Weld to fill the dings.
A little trick for conforming the new piston seal after replacement. The new seal is stretched when installing it over the piston. Tighten a hose clamp over the new seal, place it in the freezer for an hour, then remove the hose clamp and re-assemble the cylinder.
While it was in the shop, I drained the trans./hyd. oil, removed the sump screen to check for foreign material, replaced the hydraulic filter and re-filled with fresh oil.
Sump screen.
All went well and my neighbor is back in business.
No charge for my labor, as he has loaned this tractor/loader to me many times since I moved here in 2020.