• 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. J

    Komatsu PC78us-6-n0 Motor Stalls while moving bucket and swing arm

    This is the monitor. I do not know how to pull codes on this one.
  2. J

    Komatsu PC78us-6-n0 Motor Stalls while moving bucket and swing arm

    Thanks for the quick responses. Machine is a PC78US-6 serial 5565 just over 12k hours. Motor starts up great, machine operates amazing until you use a function with substantial flow. (Rapid boom down, tracking, and multi function). It will load the engine, seems like a pressure relief sticking...
  3. J

    Komatsu PC78us-6-n0 Motor Stalls while moving bucket and swing arm

    We're you ever able find the issue? I have a pc78us-6 with similar symptoms.
Top