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    Komatsu mini excavator PC50 mr2 year 2007 low movement speed

    I ´m purchasing a new pump housing in China, that holds the half balls. Thank you for your very valuable info return ! On the market I can see plenty of those pumps new and used refurbished, that means lots of people have problems with them I guess. But why almost nobody communicate about this...
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    Komatsu mini excavator PC50 mr2 year 2007 low movement speed

    Pictures of my pump
  3. I

    Komatsu mini excavator PC50 mr2 year 2007 low movement speed

    Ooh such qualified info ! Thank you so much the servo piston also have problems ? Very good info. I found my pump housing at rocker swash plate cam articulation have half balls inserted and strange weld job done around. But on the book it shows full balls, not half balls. Are the half balls...
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    Komatsu mini excavator PC50 mr2 year 2007 low movement speed

    I havent found pilot pump filter at all on mine …. My actual opinion is that the swash plate (pump volume actuator) doesn’t move freely as should, then the pump doesn’t respond correctly from the Load sense LS given to it by the distributor
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    Komatsu mini excavator PC50 mr2 year 2007 low movement speed

    Hello ! Did you found the problem ? I’ve got same excavator with very same problem. Pilot pressure is perfect. I found wear at the balls in the pump, I feel the rocker cam is hard to be actuated when using the machine
  6. I

    Komatsu PW140-7 hydraulic load issues

    I ! I’ve got one nearby with same issue. I believe it comes from some wear in the pump. Can be rebuilt. Something like the rocker got stuck and so the variable stroke of the pump doesn’t destroke when starting. When starting the pressure rise and as the volume of oil produced is not used , the...
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    Excavating using laser's

    Hello. I know the post is old but many of us surely have the same problems. I just want to share my little experience : I purchased a Chinese green laser with auto leveling and horizontal line. I made excavation at night, installed the laser in a hole at right level, and then directly excavate...
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