Posted 3/5/2023 17:03 (#10125043 - in reply to #10124675) Subject: RE: Changing hydraulic oil in John Deere 8400 and screen cleanout
The debris looked like corn and bean chaff, maybe some grass. My guess is someone left the hydraulic fill cap off during harvest at some point. It wasn't enough to plug the filter, but there was a decent amount in the reservoir.