History and Origin of Chinese Dozer?

Afraid I can’t be of much help with the history of the Guilin dozer other than it was obviously named after the city where it was manufactured, and was purchased by Yuchai sometime in the late 90’s. I can’t say for sure if it copied the JD 310 or Komatsu D20, but there are a whole fistful of small dozers to copy from, if in fact they did.

The over-center clutch design has been around before the beginning of the bulldozer, and has history in marine transmissions that go back to the days of the original landing crafts of WW ll. Also used in PTO's.

I cannot tell you how many different ones I’ve worked on over the years, but the operating principles are the same. I can tell you that you won’t be able to adapt your shuttle clutch without significant discomfort to your body and wallet. Sorry.

I think all crawlers from Holt forward are really copies of each other to some degree.  It's the same basic design with a few twists here and there.