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Recent content by newtone79

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    Hydraulic question

    Fluid looks good and I changed the filter when I first got it since it looked like it hadn't been changed in a while. I will go through the pressure tests for sure, just trying to get an understanding before I do that. Interesting note on performance that maybe I haven't been too clear on...
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    Hydraulic question

    It has been a while and of course I have ignored this problem until now because I haven't needed to dig any more stumps. This past weekend I dug up a pretty big poplar stump and this issue showed up again. I dug in to the manual some more and found decent information (on previous gen, fingers...
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    Hydraulic question

    I found a big 1” low pressure line that was pretty rough looking but not leaking. I replaced that and tested by digging out a pretty good sized hickory stump. By the end my hydraulic oil tank was pretty hot but not too hot to touch. One thing I realized was that if I engage the track motor a...
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    Hydraulic question

    Boom up was the slowest being almost unusable near the end, but I think everything was slower to some extent. I think the biggest cylinders were the slow ones based on what the print says.
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    Hydraulic question

    I used my Komatsu PC28 to dig up my first stump this weekend and I noticed after a while the boom functions got really slow. I read a couple threads about this type of thing and they mentioned pressure relief valves bypassing when they shouldn't for various reasons. I have a diagram of the...
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    2007 Komatsu PC35mr-2 Excavator manuals

    @tool_king is your man
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    Looking for PC28UU2 Service Manual

    I just picked this machine up before Christmas and would like to check it out with the reference docs in hand. I have located the operator maintenance manual online for free, but can't seem to find the more detailed documents. Hoping that someone on here has one to share to help keep some...
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    Komatsu pc28uu 3d78 workshop manual

    Any chance someone has the next generation pc28-uu-2 available?
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