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  1. 8

    Service Manual Trading Post

    Djdeguire@gmail.com
  2. 8

    Service Manual Trading Post

    I am looking for a komatsu PC75uu -2 repair manual.
  3. 8

    Thumb problems on a komatsu

    I figured it out there was supposed to be a switch it was removed. So I put the line to the valve body and it all works
  4. 8

    Thumb problems on a komatsu

    Serial number 5115
  5. 8

    Thumb problems on a komatsu

    I have a Komatsu PC 75 uu-2. I bought a thumb for it and I installed it I have all of the hydraulic lines heading out to the end for the thumb in the pedal inside. The machine used to be set up for a rock hammer. Now I am finding that if I go to the left with the pedal it is high speed into the...
  6. 8

    1997 international 4900

    With that jumper on everything works correctly so I am going to chase down the wire and repair it cuz it must be broken at some point thank you so much for all of your help I would really appreciate it
  7. 8

    1997 international 4900

    Just wondering if it did start would there be a problem with it where I couldn't shut it down or would that wire be feeding something else
  8. 8

    1997 international 4900

    Ok at pin 1 if I put my test light into it and test for power there is only a couple volts. If I run a jumper wire to the test light from the power. To give pin one full voltage it has no more clicking on the relays and when I tried to turn it over it was actually trying to start
  9. 8

    1997 international 4900

    Ok first off I was checking the ecm plugs backwards what I thought was pin 41 was actually pin 1 so with that said pin 57 and pin 1 only have 6.68 Volta with the key on. With the key off pin 1 has only 9.3 volts. Battery's have 12.5
  10. 8

    1997 international 4900

    I appreciate your help very much. Thank you
  11. 8

    1997 international 4900

    It won't crank with nothing done to it. Not positive on which pin is pin 5 on the relay
  12. 8

    1997 international 4900

    I am not sure what pin five on the relay is. As in which one there is a 87 30 86 85 87
  13. 8

    1997 international 4900

    I am not a
  14. 8

    1997 international 4900

    After testing everything the truck won't crank over now
  15. 8

    1997 international 4900

    Ok I'll go try that
  16. 8

    1997 international 4900

    I am using a test light with it hooked to power on the batt
  17. 8

    1997 international 4900

    Pulled the ecm relay one had a solid power and three grounds solid with the key on and the relay pulled
  18. 8

    1997 international 4900

    Ecm pin 33 solid ground with the key off. Turn key on and it flickers
  19. 8

    1997 international 4900

    I will try that. I am confused at what the third relay is but I will check it now. Thank you
  20. 8

    1997 international 4900

    Yes I had power at the relays but the grounds were flickering. I had tried shaping relays to see if it made a difference but it didn't. Unless both relays are bad but the grounds at the relays were flickering
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