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  1. K

    Komatsu pc228 code 306

    Update, all original codes have been cleared, by diagnosing a bad pump controller, I now have only one, e234, but the pump is still loaded up and engine will not crank. Thanks
  2. K

    Komatsu pc228 code 306

    How’s it going gents, I have a komatsu pc228, the motor will not start. Acting like it’s under full load from the pump, I have code E306, the feedback potential circuit is abnormal, we tested the solenoids and we’re getting the in between 40-60 ohms of resistance the book requires and they were...
    • korbind96
    • Thread
    • 306 code eletric engine excavator hydraulic komatsu komatsu 228 pump
    • Replies: 2
    • Forum: Excavators
  3. K

    Jd 444 Hydraulic issues

    Hey Dave, I got everything back together, the booms working awesome, only issue is no steering still and it will only drive about 5 feet
  4. K

    Jd 444 Hydraulic issues

    Diesel Dave you were spot on. The rubbers were disintegrated inside of there
  5. K

    Jd 444 Hydraulic issues

    Awesome thank you so much for the information, I’m going to pull that apart now
  6. K

    Jd 444 Hydraulic issues

    What other splines should I check besides the drive line connecting the engine and torque converter?
  7. K

    Jd 444 Hydraulic issues

    I take that back, the driveline is spinning, just very slowly
  8. K

    Jd 444 Hydraulic issues

    The transmission pressure says 75 (who knows if it’s right, and no the shaft is not turning, I just got to the loader today
  9. K

    Jd 444 Hydraulic issues

    Oil levels are good, coupled to pump under radiator is good, I will check for ball valves, supposedly they parked the loader one night, then came out to run it the next day and this problem happened, then he installed the pump and no change
  10. K

    Jd 444 Hydraulic issues

    Okay thanks for the diagrams, this is a little head smashing to me as to these issues happening at the same time
  11. K

    Jd 444 Hydraulic issues

    That helps me a bunch but also none at all as I’m not next to the machine haha, I have a feeling the mechanic before me didn’t get flow off the pump and ruled it out, a little understandably. But from my understanding on this model the transmission and other hydraulics require separate pumps and...
  12. K

    Jd 444 Hydraulic issues

    I will have to look at that tomorrow
  13. K

    Jd 444 Hydraulic issues

    The one below the radiator
  14. K

    Jd 444 Hydraulic issues

  15. K

    Jd 444 Hydraulic issues

    Correct, it’s pretty old
  16. K

    Jd 444 Hydraulic issues

    How’s it going guys, I have an old 444 loader, it has no steering, won’t go into gear, and the bucket barely lifts at all, last mechanic to touch it replaced the pump, he didn’t even change the filters when he did it. I changed steering filters on it along with the return filter in the hyd tank...
    • korbind96
    • Thread
    • 444 brakes hydraulic hydraulic troubleshooting lift loader pump steering
    • Replies: 26
    • Forum: Wheel Loaders
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