My machine has 2400hours on it and probably 100 different operators because i beileve it was a rental at some point in its life. With that being said the hoe was way loose. I could wiggle the boom with my hand about 6 inches. Machine was already down with a blown hose and i had some bushing material so why not.
First was the bushings in the main swing tower pin
Swing tower removed
New bushings machined down
Next was the oblong holes in the lower boom pin. The pin keepers were discarded at some time by a previous owner so the pin and lower boom had all the wear instead of where is mounts on the swing tower.
This is how i handled the worn holes in the boom. I tacked a bushing the size of a hole saw that was big enough to make a round hole again. I was going to attempt to build a line boring but this actually worked really well considering there was no metal for the pilot bit on the hole saw to hold it centered.
Heres the bushing i eventually welded in to restore the hole to one inch. I made a new 1" pin and 3/8" pin keepers as well. The hoe is so much tighter now. quite happy with how well it turned out