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Recent content by matomiguel300

  1. M

    Pc300 bucket no strength

    I'm going crazy with this problem I inverted the hoses behind the boom and the excavator digs fine with strength but when I open the bucket it's really slow and weak reverse to what it did before what could this be
  2. M

    Pc300 bucket no strength

    It's a pc300-7 I'm working on it today no it stays up drifts a tad little bit here is what I did today I loosened the house in the cilinder that opens the bucket and applied pressure to close the cilinder stops leaking meaning it has no bypass but I get oil coming in to the cilinder from that...
  3. M

    Pc300 bucket no strength

    How can I check if it's bypassing because I'm kind of leaning that way l
  4. M

    Pc300 bucket no strength

    Nobody ?? plz help I need this machine for tomorrow
  5. M

    Pc300 bucket no strength

    Hi everyone I been having this problem with my komatsu pc300 excavator making it almost useless for my field of work, we do demo. The problem is simply that the whole machine is strong and fast boom stick swing tracks but the bucket has no strength what so ever it moves opens and closes but it...
  6. M

    Komatsu pc300 ppc lock valve location?

    It's a 09 don't know bout the series, this Excavator gee mics the same thing as pulling the lever it works for an hour or two then it stop sometimes starts with the tracks but at the end all hydraulic move stops sometimes at auto idle it won't ever recognize I'm moving the controls as it...
  7. M

    Komatsu pc300 ppc lock valve location?

    Hi I think my ppc lock valve is acting up but I can't find anywhere where it is located at does anybody on here know? Thanks
  8. M

    Komatsu pc300 - 7 problem

    Did today it had this fine copper dust in the hydraulic
  9. M

    Komatsu pc300 - 7 problem

    I don't know u mean inside the cab the joy sticks I operate with.? When I put the hose back it ran fine for like 4 minutes and all hydraulics started to stock no movement at all
  10. M

    Komatsu pc300 - 7 problem

    Hi new to the forum, hope I'm posting in the right section . I'm own a 04 pc300 komatsu excavator and it's ran fine up until yesterday when it stopped working right before it broke down the two little hoses that go to the quick conect on the bucket I had them looped because I have no quick...
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