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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: update kumatsu pc 25

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NCWayne

04-02-2012 19:06:40
69.40.232.132



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Ok, I misunderstood what you were talking about the first time when you were asking about changing the hoses. I assumed you were just talking about changing the pilot controls, but changing the actual lines going to the cylinders might not cause any actual problems but it could cause problems syncronizing the motions of the boom. That said, I don't know exactly how the smaller excavators like you've got are designed, but the boom cylinder circuit on most all of the larger excavators is different than the circuits going to the other functions. I say different in that they typically merge pump flows when lifting the boom, use regeretive oil from other circuits, etc all in order to increase the flow to the cylinders causing the boom to cycle faster. On your machine none of those things may be at issue here, but it would still pay to call and talk to someone in service at your local dealer and find out for sure. If you can't get anyone to help you feel free to get back with me with model and serial number, and I'll be glad to call and talk to one of the service guys I know at my local dealer. My email is open.

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CBBC

04-02-2012 20:12:22
70.79.230.41



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 Re: update komatsu pc 25 in reply to NCWayne, 04-02-2012 19:06:40  
I was wondering about that, but it doesn't seem to be an isssue. The cycling speed and strength of lift seem the same in the JD format vs the Cat which it was in (all though the opperators - Dad and I were pretty shaky).

I will drop by the Komatsu dealer later in the week and ask - the worst case would be to trace the pilot lines and switch them.

We will run it for a few days anyway and see how it is. We are digging out slabs 3'X3' of a cranberry field and replanting them in the holes and dammaged area of another field. We are digging them out with our PC-60 and using the PC-25 to scrape a bit of soil over them and pack the slabs down in the good field. If we need something bigger, we have our EX 120 sitting on the dyke to push out piles of sawdust and soil.

I'll update with the progress later in the week.
Thanks, Grant

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