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2008 Kubota U35 New Hour Meter Not Working

Discussion in 'Excavators' started by knockonwood, Nov 4, 2019.

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  1. knockonwood

    knockonwood New Member

    Joined:
    Sep 6, 2019
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    Location:
    Hartselle, AL
    I recently had Kubota work on my machine and the digital hour meter had stopped working at 1776 hrs. They said when the hour meter stops you have to buy a whole new gauge assembly. They wanted over $1800 for one but I called other dealerships and found one for $1100. I get the machine back and now the hour meter is stuck at 0.0 and they told me its probably a bad part. Does anyone know if there is a fuse or some sequence of buttons to push to get the hour meter working?
     
  2. knockonwood

    knockonwood New Member

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    Sep 6, 2019
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    Location:
    Hartselle, AL
    Also just noticed the tachometer does not work on the other digital view. I wonder if the sensor that feeds the tachometer could also supply the data for the hour meter. Any thoughts? My local dealer is telling me its a bad part but they also say they have no way to test the part to see if its bad. Any thoughts on this? The old part was doing the same thing.
     
  3. uffex

    uffex Senior Member

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    Good day KOW
    Do you have a wiring diagram for your machine with that we can help trouble shooting, if not may I suggest you contact the dealer and get one.
    Kind regards
    Uffex
     
  4. knockonwood

    knockonwood New Member

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    Sep 6, 2019
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    Thanks for the reply. I have been looking over the workshop manual and can't find a good wiring diagram. I called the Kubota dealer that replaced the console and they are opening a case with Kubota technical support. They think it's a bad part but not sure the odds of having two bad parts in a row. With the tachometer also not working, I wonder if the tach sensor could be bad and if that's what feeds data to the hour meter. They said when the key is on the hour meter should start running. I will update this soon as I here back from Kubota.
     
  5. uffex

    uffex Senior Member

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    Good day KOW
    It seems a little strange that the hr meter should run with the key on, this breaks with the convention that the Hr meter counts the time the machine is in use not the key switch being left in the on position, most machines that develop the kind of fault you have originate from the alternator diodes but without a electrical schematic its difficult to spot. I suggest you pursue getting a schematic if you intend to keep the machine for sure you may need that at some stage.
    Kind regards
    Uffex
     
  6. LACHAU

    LACHAU Well-Known Member

    Joined:
    Aug 11, 2009
    Messages:
    116
    Location:
    VIETNAM HCMCity
    In Normally, the working hour meter has operated when the engine live.

    W hour meter C.gif

    W HOUR METER.png
     
  7. LACHAU

    LACHAU Well-Known Member

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    Location:
    VIETNAM HCMCity
    Example 2.

    W HOUR METER 2.png
     
  8. LACHAU

    LACHAU Well-Known Member

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    Aug 11, 2009
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    116
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    VIETNAM HCMCity
    How the dealer could say like that??!!
    I attached a file that guide how to test the monitor controller for your reference.


    U35-3 self test.png

    U35-3.png
     

    Attached Files:

    Last edited: Nov 8, 2019
  9. knockonwood

    knockonwood New Member

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    Sep 6, 2019
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    Location:
    Hartselle, AL
    Thanks for the response and flashing arrows :) I need all help I can get. I'm going to check out these diagrams and see were to start troubleshooting. I will let you know what I find out.
     
  10. LACHAU

    LACHAU Well-Known Member

    Joined:
    Aug 11, 2009
    Messages:
    116
    Location:
    VIETNAM HCMCity
    Here you are.

    K00A.png

    K00B.png
    K02.png
     

    Attached Files: