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  1. P

    Thumb questions ?

    Like ATCOEQUIP said they look similar but are not the same as JIC. What I did is took the lines off the offset valve (they were in good condition) and had a shop with hydraulic crimper cut them and crimp standard fittings to adapt to solenoid valve, then measured and made up rest of line to...
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    Thumb questions ?

    I built a thumb for my PC50uu-2 and used a solenoid selector valve in the offset boom curcuit. I use a rocker switch between the two functions and also put a relief valve to protect the thumb cylinder. Got valves from surpluscenter.com. Link to valve...
  3. P

    Final drive seal

    Thanks to all who have responded. I am happy to say the drive is back together, timed and back in the machine with no leaks. Thanks again, Phil
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    Final drive seal

    Hi John, I believe this would be the sprocket seal. Its the main steel face seal behind the final drive cluster. They call it the floating seal in the parts book (dealer faxed me the breakdown). The cover comes off, then snap ring on shaft, then three bolts holding the cluster in and the...
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    Final drive seal

    Hi Marco, Thanks for the quick reply. My concern is how deep the o-ring should be in the chamber. The seal has a groove were the o-ring seats but the housing is tapered. If I try to push the o-ring to far in the in the chamber the seal will pop out. If I push the o-ring in just below flush...
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    Final drive seal

    Has anyone ever replaced the floating final drive seal on a smaller excavator (Komatsu PC50UU-2)? The big o-ring in back of the floating seal was broke causing the oil to leak out when filled to that point. I got a new seal and want to know if there is a special procedure for installing it. I...
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    Right side track slower then left?

    Thanks for the great illustration. I'm not sure if I have to take the cover off or not. It seems to be leaking on the inside between the motor and the final drive. I just don't know how to get at that seal.
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    Right side track slower then left?

    Did you take the old drive apart? I have a Komatsu pc50uu-2 that has the same type of drive (hydash) and it leaks gear oil when its full. The drive sounds ok and no metal in the gearbox so I would like to repair it before it does some damage. I can't find a manual or any info on how to take it...
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    Grouser OTT Tracks

    I bought a set of used Grouser tracks 4 or 5 years ago and really like them. We have alot of red clay around here and they make it push like a dozer. I only put them on when I have to over stock air filled tires, never had a problem. It only takes me about 30 min. to put on and 10 min. to take...
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