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  1. J

    Bobcat 331 boom hydraulics

    Do you happen to have a diagram showing where that valve is
  2. J

    Bobcat 331 boom hydraulics

    I have a bobcat 331 mini excavator serial # 512915703 that when operating the boom hydraulics get slow and then stops working completely within 5 minutes of operation. the machine still has full power until it quits but you can shut machine off and start back up and everything works until it...
  3. J

    Komatsu d31px-21

    Ok I think we narrowed it down I ain’t getting any fire to the 1-3 solenoids with lever up but there’s a plug underneath the floor board that isn’t plugged into anything that gets fire when you pull lever up. If you jump that plug the 1-3 solenoids get power I guess it’s the parking brake...
  4. J

    Komatsu d31px-21

    I don’t have any codes or buttons to push on my dash
  5. J

    Komatsu d31px-21

    I have a Komatsu d31px-21 serial number 50077. The dozer will not go forward or backwards but the blade functions operate as they should and I’m not sure where to check pressure for forward and backwards pump
  6. J

    Komatsu d39

    Thank you I will have to go give that a look and see
  7. J

    Komatsu d39

    Model number is d39p-1 Serial number is 4750002p095835 The machine is strong pushing but unless you are pushing something or back dragging the blade it’s hard to steer. It’s like the clutches are releasing but the brakes are not holding
  8. J

    Komatsu d39

    I’ll have to go look and I’ll try and find it on there
  9. J

    Komatsu d39

    I got a Komatsu d39 that I’m trying to find out how to smadjust the steering brakes
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