Would be great to have working wheel lean, so I'm looking for parts 4B5206 bar assembly (the bar circled mostly in green) with a good rack on it, and 4B5204 link (snapped off piece circled in red). Closer to central CT the better, but I can travel to pickup within reasonable distance.

Machinery Trader parts shows three places having the 4B5204 link, nothing the 4B5206 though.

Hi Team,
from memory that rack, which looks to have a missing tooth, is likely the only adjustment on the grader that requires shims to be inserted under the rack's base to space it further into mesh as the rack and pinion teeth and the bar end bearings, and pins etc. wear and the rack bar moves away from the pinion.

Wear at the Arm Assembly lower pivot pins and/or bushes in the main axle beam, and the top Bar Assembly when worn, place extra load on the link trying to hold everything in its correct designed position as I believe it is only supposed to hold the teeth in mesh when under load as the bar tries to spring apart from gear tooth meshing loads. If the broken tooth jammed in the works could explain the broken link at least one time.

The link can break as it tries to keep the worn font end together instead of being just a bar steady.

I feel another link will break from excessive tensile loads that it is not designed for unless all or most wear in the front end pivots etc are attended too.

Picture a standard link being too short to work in a neutral load situation in a worn front end--they can break from accident damage too.
The link would need to be longer between hole centres to match the centre distance of its pivot pins/shafts if you did not wish to rebuild the front end--can get expensive judging by the ones I worked on.

A bit of an untidy explanation so I hope you can follow along.

Cheers,
Eddie B.

Ed, I'm glad to have folks with experience help a young, wet-behind-the-ears kid like me. I'm new to the world of graders so I'll take any advice I can get. Your explanation does make sense. I think the rack is welded to the bar on this machine so I don't think that's gonna be adjustable anyway. Even with the steering box it's a wide turner-what would you (or anyone else willing to chime in) suggest I do before I go after those parts?