KX 161-3 hyd thumb problem

Discussion in 'Heavy Equipment & Pavement' started by AWJ Services, Jun 13, 2008.

  1. AWJ Services

    AWJ Services LawnSite Platinum Member
    from Ga
    Posts: 4,276

    The thumb will not stay in the retracted position.
    Any ideas?
     
  2. ksss

    ksss LawnSite Fanatic
    Posts: 7,131

    The aux. spool valve might be bad or single/dual direction valve may be turned the wrong way. Does it function correctly but just wont stay against the stick?
     
  3. SiteSolutions

    SiteSolutions LawnSite Bronze Member
    Posts: 1,114

    Bad check valve

    maybe?
     
  4. AWJ Services

    AWJ Services LawnSite Platinum Member
    from Ga
    Posts: 4,276

    It works in the correct direction.
    The close direction works fine and stays in place.
    I retract the thumb and before I can dig a scoop of dirt and dump it I have too retract the thumb again.


    I have a drain field too put in next week then I am going on vacation and could try too get a dealer too look at it while I am gone.
    I would rather try too fix it my self however.

    I unhhooked the electric solenoid valves that run the aux and it had no effect nor does turning the aux on or off.
    I assume the main valve has a leak or possibly is misadjusted.
     
  5. Construct'O

    Construct'O LawnSite Bronze Member
    from Sw Iowa
    Posts: 1,387

    AWJ did you check to see if single/dual direction valve was turned the wrong way???????? I think KSSS was on to something with his first post.

    I think this was discussed before on here if turned to single ,for use of hammer and not turned back for dual if using your thumb,that it would act like your saying.

    Should be a lever that you can turn or something like for the pattern control.

    Good luck:usflag:
     
  6. AWJ Services

    AWJ Services LawnSite Platinum Member
    from Ga
    Posts: 4,276

    That makes sense.
    I did not get an owners manual with the machine.:cry:

    So I will have too go Sherlock Holmes on the machine today.

    I assume it is like the one way flow switch on my skid steer?

    I can here fluid flowing all the time with it running as well.


    Thanks guys.
     
  7. bobcat_ron

    bobcat_ron LawnSite Fanatic
    Posts: 10,119

    Both Kubota and Hitachi use an external valve to go from a hammer or thumb, single (with pressure release) or dual action set up, the valve might just need to be turned to keep the pressure from drifting.

    Look for the valve behind the boom, under the cab or in the engine compartment.
     
  8. GradeMan

    GradeMan LawnSite Member
    from canada
    Posts: 214

    Pretty sure its a pull out lever on those Kx's by the seat???
     
  9. bobcat_ron

    bobcat_ron LawnSite Fanatic
    Posts: 10,119

    Isn't that the control pattern changer (Dinosaur to Modern day)
     
  10. GradeMan

    GradeMan LawnSite Member
    from canada
    Posts: 214

    No,, Pretty sure that was for the hammer or thumb valve...
     

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