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D4C hystat .

Discussion in 'Dozers' started by Landbutchr, Mar 27, 2020.

  1. Landbutchr

    Landbutchr Member

    Joined:
    Dec 2, 2014
    Messages:
    12
    Location:
    So. california
    Our D4c Has been a never ending source of entertainment lately. The dozer functions all go into bybass when actuated during warm up.If I barely open a valve it will move the hydraulics very slowly ,but If I open them further it goes to bypass. By the way it doesn't seem to affect the ripper . After it gets warmed up it operates normally.
     
  2. Tyler d4c

    Tyler d4c Well-Known Member

    Joined:
    Mar 3, 2016
    Messages:
    208
    Location:
    Salix Pa
    Need to put a pressure gauge on it and see what's going on sounds like a relief valve problem odd the ripper works tho.
     
  3. Mark250

    Mark250 Senior Member

    Joined:
    Aug 30, 2015
    Messages:
    955
    Occupation:
    heavy equipment technician
    Location:
    victoria,Australia
    its a very simple circuit, all I can say is check the main relief valve.
    post the serial number se we can double check for anything that may cause your problem
    upload_2020-3-27_17-8-28.png
     
  4. Landbutchr

    Landbutchr Member

    Joined:
    Dec 2, 2014
    Messages:
    12
    Location:
    So. california