When they went to the K Series around 2004

That was after the big Case / New Holland joint venture. The H series was the last and best version that Case made…. IMHO

Biggest mistake that Case ever made was going to Hystat. Case dozers we're the best in there size class for 20+ years. I have ran them all and Case may not out perform the others in every single task but they will do more combined work in a 10-12 hour day than any of them. You can push a full load turning if needed. There easy to repair and maintain as well. Sadly that all went away after the H series. Newer ones are nice, but I will keep my 850H until I'm too old to run it.

@@daveb9575 thanks for the info, I’m looking at a 550g with 2800 hours. From what y’all said here I think it’ll be a good purchase

That is awesome that you have the model machine. I am not sure where you are and what parts you need but it looks like there are some available through: hwpartstore.com/pages/case-550e-550g-dozer-parts