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komastsu

  1. P

    Komatsu brake band assembly “help”

    Hey guys I just replaced the steering clutches on my komatsu d21p-6. I’m having a hard time reassembling the brake band assembly under the clutch covers and getting the covers back on. Any help would be greatly appreciated.
    • Philipcolumbetti
    • Thread
    • komastsu komatsu d21 steering brake steering clutches
    • Replies: 3
    • Forum: Dozers
  2. Orion Zenith

    Komatsu Hydraulic Excavator PC1600-1

    Download it here, and if you enjoy it, click the 'Like' button! Link to download: Excavator PC1600-1 Best regards
  3. Girth_Brooks

    4 Way Blade Adjustments

    We have a komatsu 65ex with 4 way blade and had the arm, with hoses, slip off a couple times before i got it tuned in. Should the 2 tie rods, from arm to back middle of blade, be pulling in to hold everything square or maybe relaxed. I feel like im missing something.
    • Girth_Brooks
    • Thread
    • 4 way blade 65ex-15eo blade issues dozer komastsu
    • Replies: 8
    • Forum: Dozers
  4. B

    PC120-6 Display monitor power

    The display monitor on my Komatsu PC120-6 quit working. I bought a new monitor and it doesn’t work either. I traced the power wire from the fuse box to the monitor and it has about 24 volts. The machine cranks up and runs the throttle response but the engine won’t rev to full rpm. Like it’s in a...
    • blanchb
    • Thread
    • display monitor komastsu pc120-6
    • Replies: 3
    • Forum: Excavators
  5. A

    Komatsu pc50 slow movements

    Hi everyone, I own a 2008 Komatsu pc50. When I move the dipper, the boom lifts very slowly, but when I slightly release the dipper joystick the boom lifts just fine and fast. Is there any way to make the boom and dipper work simultaneously? There are hold valves on the boom and dipper cylinders...
    • Ale98
    • Thread
    • excavator komastsu pc50 mr-2
    • Replies: 1
    • Forum: Excavators
  6. T

    Komatsu PC300LC-7L setting hydraulic pressures

    Need some help again. Customer states machine has new pumps and control valve has been cleaned, new main relief valves, new unloading valves. Machine will not function correctly. I'm assuming none of the pressures are set correctly. Where would I even start on this machine? I am obviously...
  7. A

    komatsu excavators

    hello if i have a komatsu excavator and i want to know its year of manufacture how can i do this ? is there a place to search the equipment details by the serial number?
  8. erick93

    Spool For a PC400-7

    Hello my fellow enthusiast I’ve got an issue for a Komatsu PC400-7 excavator Serial No. 50478. We have a Valve ass’y with the part number 723-40-71201 that has a damaged spool. I’ve attached the diagram of the mentioned valve (item 1) and spool (item 2). The thing is that it’s impossible to...
    • erick93
    • Thread
    • help komastsu pc400 spare parts online spool spool valve used parts valve assembly
    • Replies: 1
    • Forum: Excavators
  9. J

    Cat 308B pilot Control valve

    Does anyone know where pilot control valve is on a cat 308BSR to switch from cat to JD. TIA
    • jxa5094
    • Thread
    • cat cat controls john deere komastsu pilot controls
    • Replies: 2
    • Forum: Excavators
  10. tharindudimi

    Komatsu PC 210 LC 8 Changing passcode and getting KOMTRAX

    Hi, we have a excavator brought from an auction. I want to change the passcode of the excavator and to login to the komtrax system. However no information on this regard was given to me. However there is a barcode with a KOMTRAX sticker on the left side of the pilot seat. Kindly advice as to...
  11. J

    Cat 308 hydraulic fluid or motor oil

    I have a 97 cat 308B. I went to change the filters the hydraulic filter was milky. I am going to change to fluid. My father in law had an older JD that took motor oil in the hydraulic fluid. Does anyone know if this takes hydraulic fluid or motor oil? TIA!
    • jxa5094
    • Thread
    • cat caterpillar excavator hydraulic john deere komastsu midi
    • Replies: 0
    • Forum: Excavators
  12. J

    Komatsu pc128 won’t start

    My Komatsu won’t turn over. When I turn the key one everything come on. The only way it will turn over is if I connect a ground wire to the alternator and ground it to the machine. After it starts I can pull the ground wire and the machine will run fine. Changed the safety starter relay. New...
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