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Komatsu pc220-6 diverter valves.

davecampbell ยท 2021-08-10 21:10

I'm assuming they are diverter valves. I've never seen them before. They were on a 220 that is for sale 5 miles from me. They are in the aux circuit. One has what looks like a pressure relief valve built into it and a line that I think teed into case drain on swing gear. The other one had a large line to a filter and then ran towards cooler. Are these set up to switch the aux hydraulics from hammer to thumb? It has a fixed thumb on it now .

Replies5
  1. #1John C.2021-08-11 11:23

    Those are usually gray market components. Yes, they are for a free return circuit. Does the machine have extra guarding on it as well?

  2. #2davecampbell2021-08-11 12:46

    No extra guards.

  3. #3davecampbell2021-08-11 12:47

    Are you saying the valves are the only thing gray market, or it indicates that the machine is gray market?

  4. #4John C.2021-08-11 17:47

    It usually means the machine is gray market. Check the manufacturer tags on the added components. They will likely be in Japanese if they are still there. Do you have a serial number for the machine?

  5. #5davecampbell2021-08-11 20:11

    A85377