• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Search results

  1. S

    Komatsu pw98 mr-6 hydraulic pump under load

    Ok should i check the travel valves first, because the travel pedal relieves the pressure when pressed slightly? Hopefully this fixes the slow speed issue aswell.
  2. S

    Komatsu pw98 mr-6 hydraulic pump under load

    The delta p is around 30 bar The issue is that the pump pressure is increasing when the hydraulics get warm, to the point where the engine is unable to low idle and it wont event start.
  3. S

    Komatsu pw98 mr-6 hydraulic pump under load

    Hello i have a komatsu pw98 mr-6 wheeled excavator The issue starts when the hydraulics get warm, the hydraulic pump stays under load even though the joysticks are at neutral position, and it tends to get worse and worse as im working to the point where, if i leave the engine at low idle, it...
  4. S

    Komatsu pw98 mr-6 hydraulic pump under load

    Hello i have a komatsu pw98 mr-6 wheeled excavator The issue starts when the hydraulics get warm, the hydraulic pump stays under load even though the joysticks are at neutral position, and it tends to get worse and worse as im working to the point where, if i leave the engine at low idle, it...
    • salih esati
    • Thread
    • komatsu pw98 mr-6 low speed pump under load
    • Replies: 0
    • Forum: Excavators
  5. S

    Komatsu pw98 hydraulic pump under load

    yes i checked the bypass valve and it was clean
  6. S

    Komatsu pw98 hydraulic pump under load

    Hello sorry for the late reply the issue still persists i bought some hydraulic gauges to check pressure and the ls pressure does rise as high as 80 bar as the excavator warms up i also replaced the unloading valve but nothing changed
  7. S

    Komatsu pw98 hydraulic pump under load

    the monitor panel is very simple, no fault codes are showing. thanks for the help anyway
  8. S

    Komatsu pw98 hydraulic pump under load

  9. S

    Komatsu pw98 hydraulic pump under load

    Yes the excavator is on tires. I will get you a photo of the pump and control valve, in the mean time here's a link of the parts book, it contains some photos of the control valve and pump. https://777parts.org/a1/#?k=!0!1!5276!194!278 also if i lift the excavator off the ground, the tires do...
  10. S

    Komatsu pw98 hydraulic pump under load

    Hello i have a komatsu pw98-mr6 The issue is that when the hydraulics get warm the hydraulic pump stays under load even though the joysticks are at neutral position, and it tends to get worse and worse as im working to the point where if i leave the engine at idle it stalls. Also there is a...
Top