Heavy Equipment Forums Heavy Equipment Community

Kobelco SK140SR Hydraulic Thumb Issues…

Kevin Cohrs ยท 2020-12-28 15:38

Recently purchased a 2016 SK140SR that has some issues with the hydraulic thumb on it. Now it is to the point where its stuck in the closed position and will not move at all. Im also getting a message on the screen saying "Selector Valve Failure". Im guessing there is a way to display any codes the machine is giving? Im not exactly sure how to get into that menu. Any ideas where to begin looking for problems with the thumb? Any ideas much appreciated!

Replies4
  1. #1LACHAU2020-12-30 09:30

    Your machine is SK140SR-5 (manufactured year 2016). Selector Valve is a valve to select the operation of NIBBLER or BREAKER. I guess your machine has been using this valve for thumb operating. Attached pdf file is "how to troubleshooting for this trouble".

  2. #2Kevin Cohrs2020-12-30 15:43

    I haven't had any luck getting into a diagnosis screen. When I first turn the key on it displays the following codes: A025, B113, H093. Maybe that info could point me in the right direction. Thanks

  3. #3Kobelco ireland2020-12-30 19:21

    A025-pump proportional valve adjustment (b adjustment) is not adjusted yeg or has failed. H093-disconnection of fuel sensor. B113- disconnection of pressure sensor of optional selector positioning.

  4. #4LACHAU2020-12-31 01:01