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    Komatsu 50uu-1 Swivel joint ?

    Hey Guys/Gregs, Reviving this old thread again...Not sure if any of you guys still have your PC50uu-1, but you seem to be the experienced bunch. My pc50uu-1 had the center swivel seals fail (lost final drive power almost entirely). When we got it torn apart the swivel/slipper seals were all...
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    Komatsu PC50uu-1 hydraulic problem

    WestsideRida, I haven't solved the mystery yet. I just learned to live with it for now. I have pressure tested the hydraulic supply and have 3000psi to the final drives. The only thing mine can be is a flow issue with the pump (its still original with almost 5300 hours) or its a faulty final...
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    Komatsu pc50uu starts then stops

    i have a pc50uu-1. it was in pretty rough shape when i got it. Not sure if you have the pc50uu-1 or -2 as they have different engines. I installed an inline electric fuel pump from summit supply on my machine right underneath the tank. this helped starting A LOT! I was skeptical of the...
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    Komatsu PC50uu-1 hydraulic problem

    Yes they did have me do a case drain test, very little (hardly anything) was getting by. No real answers yet. They are having me send the final drive back under warranty and will likely send a replacement out once they get back in stock and inspect it. I am letting the supplier lead the way...
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    Komatsu PC50uu-1 hydraulic problem

    So the full 3000psi is making it to the RH final drive when hot, and the final drive stalls out. have a call into the final drive supplier, hopefully he can provide some insight. The LH final drive is still going strong. Will let you guys know what i find out.
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    Komatsu PC50uu-1 hydraulic problem

    I got a komatsu style hydraulic tee-fitting a while back that i planned to attach my pressure meter to. Tomorrow i plan on working the machine some more, get it good and hot, then splice into the hydraulic line where it is attached to the RH final drive motor. This will at least tell me if the...
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    Komatsu PC50uu-1 hydraulic problem

    Greg, Thanks for the info. sounds like we have the same machine, haha!! Mine also will counter rotate better than just one final operating individually (usually anyways). glad to see your machine at 8400 hours, that means hopefully ive got at least than many hours left in mine! I got the...
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    Komatsu PC50uu-1 hydraulic problem

    komatsugreg, The front blade seems to work OK, it will pick the machine off the ground no problem. It does tend to gradually go up or down if i'm not paying attention, but not frequently. I think the blade wandering might have more to do with the lever linkages that i tried to tighten up and...
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    Komatsu PC50uu-1 hydraulic problem

    Hey guys, I also have the same machine (1997 pc50uu-1 with 5200 hours, bought it at 5000hrs rubber tracks). I was wondering if any of you guys can comment on the strength of your final drives? Both of mine have been replaced by aftermarket units. The left replaced by the previous owner and the...
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    Komatsu 50uu-1 Swivel joint ?

    Were you able to figure it out? Sorry guys, Old thread. Just curious if you ever got your pc50uu-1 turning again? I have the same machine and the same problem. One final drive was replaced by previous owner, the replacement is stronger but slower, but still stalls out when turning. The...
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