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  1. S

    Hitachi Dr ZX

    Hi! I would need too windr. Download. Does it work with the ebay dr.zx usb-cable? Jh.koneosa@gmail.com
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    Hitachi ex100.2 diagnostic tool

    Hi! Im looking for a dr.ex or some other diagnostic tool to operate with ex100.2. i found dr.zx on ebay to work with laptop, only problem is that it comes with disc and nowadays laptops doesnt have disc base. What are my opinions? Is there any downloadable program that works with usb cable?
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    Kobelco hydraulic excavators

    Can someone send me a sk135 srlc 2003 service manual? jh.koneosa@gmail.com I Haven some issues after replacing The step motor.
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    Kobelco hydraulic excavators

    Hi! Does someone have manuals for 2003 sk135 sr(lc)? Porinraudoitus(at)gmail.com Is there some hidden menus or something, where you can make some adjustments? Only hidden menu or feature i know, is where you can read pressures and voltages.
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    Messersi owners, (libre?)

    Hi! Is here any messersi owners? Is it fact,that messersi is the same as libre? The outfit is pretty much same in many machines too. I just bought a messersi. I bought it as a m-35, year 2005. When it arrived from ireland, it had the type plate missing. I think it is a m-28, and closer of a...
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    Ex100.2 solenoid valve bank wiring

    Hi! I posted some time ago about issue, when hitachi's bucket just stopped moving. I found the problem from the solenoid valve bank. Bucket started moving again when i unplugged the wiring from the bucket operating solenoid. Now, i have been looking out what is wrong in it. I figured, that...
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    ex100.2 bucket cylinder weak & slooooooowwww

    Thanks mike. Took off the spools that the solenoid valve operates at main valve, nothing unusual. Took off two solenoids from the solenoid valve bank, took a look at them, everything seemed fine. Had no multimeter by my hands so i swapped the solenoids places, no cure. Then i unplugged the wires...
  8. S

    ex100.2 bucket cylinder weak & slooooooowwww

    I went and took a look at the valves and thinked your words, there is going little steel pipe from each spool to this solenoid valve bank where is six solenoids or proportional valves. I swear the problem is in there. Im sure. So if i unplug the pipe and plug it, it should make a difference? Im...
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    ex100.2 bucket cylinder weak & slooooooowwww

    There is this solenoid valve bank or something next to the main valve bank.http://m.ebay.com/itm?itemId=251384254252 theres solenoids like this six or eight peaces. Their name is proportional something. I just dont know this solenoid valve banks function how does it work and where it effects...
  10. S

    ex100.2 bucket cylinder weak & slooooooowwww

    Correct, all other functions are fine, just the upperstructure turn has some issues. Im really not sure about the pump, but as i know there is one variable pump.
  11. S

    ex100.2 bucket cylinder weak & slooooooowwww

    Have tried it, and also measured pilot pressures from spool cap. Pressures were normal, and bucket did not move with another pilot line. I think problem is in main valve bank, but have no idea where in it. I changed shuttlevalves which are situated close the pipe outlets, one for each pipe. Took...
  12. S

    ex100.2 bucket cylinder weak & slooooooowwww

    With pilot lines do you mean pipings going from valve block to cylinders? I suppose thats next thing o should do. If the bucket works normally with other functions pipings, the problem is in valve block somewhere. Just cant reaconize where. Well, theres like three weeks when we should have...
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    ex100.2 bucket cylinder weak & slooooooowwww

    With pilot lines do you mean pipings going from valve block to cylinders? I suppose thats next thing o should do. If the bucket works normally with other functions pipings, the problem is in valve block somewhere. Just cant reaconize where. Well, theres like three weeks when we should have...
  14. S

    ex100.2 bucket cylinder weak & slooooooowwww

    Did not yet test the tracks with second counter, just drove it a bit and it feels like its going straight. Also tried some boom functions when tracking, didnt notice any mistracking, only slows down when boom is moved. How did johnnyboy your hitachi story go? I really do not know where to look...
  15. S

    ex100.2 bucket cylinder weak & slooooooowwww

    The pilotpressure is fine. Also the cylinders gaskets seems fine, bucket stands in place even if i pull the excavator with it. I changed the shuttle valves between an other function, still quiet. Next ill do the tracking test. Where is this regulator, and what is its real full name? Could...
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    ex100.2 bucket cylinder weak & slooooooowwww

    today got the t fittings to measure some pressures. then ill tell you do i have enough pilot pressure. it is just like the spool valve is not opening. it does not load the engine until the movement reaches a top, then it strokes the engine as normal. really weird, but now ill get some facts with...
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    ex100.2 bucket cylinder weak & slooooooowwww

    yes, it is tracking straight, as ive been driving it. pilot system has it own pump, and im pretty sure it is somewhere in pilot system, because bucket does have its power left, its just slow. so the spool valve is not opening for some reason. what is funny it is like ten times faster when i pull...
  18. S

    ex100.2 bucket cylinder weak & slooooooowwww

    what could be the possible places that could cause this problem? im pretty sure theres no enough pilot pressure going to the spool valve.havent got my meter engaging parts yet. whats the function of that solenoid valvebank? this really makes me crazy. other functions works well. only turn and...
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    ex100.2 bucket cylinder weak & slooooooowwww

    found nothing. now i really need to get the pressure gauge engaged. i started to think maybe theres some pain inside the control valve, im pretty sure those metal pieces came from it. sounds expensive.
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    ex100.2 bucket cylinder weak & slooooooowwww

    so i took the spool valves out, found a little metal piece from one. now we noticed that also the upperstructure turn is sticking often, so next im going to take out the fc valve and see is there more metal in, because the both, turn and bucket operating pilot pressure hoses are going through...
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