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  1. J

    pc50uu hydraulic problems

    Merry Christmas guys, I recently picked up a 96 komatsu pc50uu that has some hydraulic issues. It starts and runs fine but the only hydraulic function that works is one track and the blade. nothing else works at all, when you move the controls it doesn't make any noise like there is any strain...
  2. J

    quick coupler question

    Good afternoon guys, I am looking for a quick coupler for my Daewoo 220-lcv and ran across this one. Will this work with the buckets and hammer I have? thanks in advance http://www.machinerytrader.com/listings/components/ACDetails.aspx?OHID=307213&keywords=manual
  3. J

    99 john deere 450 heavy black smoke

    i think my excavator is getting too much fuel. when I turn up the throttle the RPMs will go all the way to where they should be but if I put a load on the machine it will blow a huge amount of black smoke out of the exhaust. I think the previous owner turned up the fuel injection pump to try to...
  4. J

    hitachi ex150 water pump

    Been searching around on the internet and cant find one. Does anybody know where I can find one? machine is a 1994
  5. J

    ASV RC30 controls

    My operator was just using my rc30 yesterday and the machine just suddenly stopped working. The machine runs fine but none of the controls work with the safety bar down. it is just like the safety bar is up, there is no load on the engine or anything when you try using the controls. Has this...
  6. J

    john deere 450lc final drive

    Does anyone have a diagram for the final drives in this machine? thanks in advance
  7. J

    bobcat 853 problems

    i have a early 90s 853 bobcat which worked fine yesterday. i went to use it today and the hydraulics would only go up and the bucket would only dump. the lift arms would not lower and the bucket would not curl back. once i shut the machine off, i hit the controls and the lift arms would lower...
  8. J

    pumping up tracks on large excavator

    hey guys i have a daewoo 400 that a track recently fell off of. I released the pressure on the idler and got the track back on but now the idler is really hard to pump back up. is there a special trick to it or do you just need a real high pressure grease gun? Thanks in advance
  9. J

    hitachi ex200-2 hyd. pump removal

    I have to take a hydraulic pump off of of a 1992 ex200-2 this weekend and the machine is 6 hours away so i do not want to drive the work truck all the way there. can any of you mechanics let me know what tools i need to have to take the pump off?
  10. J

    study guide

    does anyone know where to find a study guide for a hoisting license? massachusetts preferably but im sure any state study guide will be similiar. thanks
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