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Komatsu PC50uu-1 hydraulic problem

Discussion in 'Compact Excavators' started by apm, Oct 5, 2012.

  1. komatsugreg

    komatsugreg Member

    Joined:
    Jul 20, 2017
    Messages:
    18
    Location:
    Creston BC
    Thanks - it was low - but not empty, strange that it has it's own reservoir - but now I know it's there - I can check it.
    Thanks again for your help ! The hydraulic guru is supposed to come by this afternoon, but then again, he was supposed to come by last week too :)
     
  2. apm

    apm Well-Known Member

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    Apr 1, 2011
    Messages:
    139
    Location:
    Northeast Tennessee
    the reservoir is for the gear lube. The hydraulics for the motor feed from the same system that everything else does.

    Greg
     
  3. komatsugreg

    komatsugreg Member

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    Location:
    Creston BC
    Hmm, hopefully the gear lube required is the same 30W non detergent as the rest of the machine
     
  4. apm

    apm Well-Known Member

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    Location:
    Northeast Tennessee
    that's what Komatsu's manual specifies.

    Greg
     
  5. komatsugreg

    komatsugreg Member

    Joined:
    Jul 20, 2017
    Messages:
    18
    Location:
    Creston BC
    And the verdict is;
    All three functions that are weak, are run from 3 different spools,
    Right track on main spool
    Left track on 2 port spool
    Blade on 2 port spool with fast travel foot control

    All three spools are fed by separate pump sections
    So - verdict is a new reseal kit for the rotary manifold and a rebuild of the manifold
    The Hydro mech says he can do that - If I can get the reseal kit
    so that's the next challenge !

    A new day - a New surprise :)