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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    Gotcha I didn’t know if you knew of a trick to see what kind of signals the sensor was sending. Thanks for the part number for I will see if I can find one to get it ordered. I will post what the machine does after we get us a sensor installed
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    We did clear the codes and still have the code 27. We followed the manual and checked that the harness was good between the pvc and p sensor. I don’t know how to know if the p sensor is reading a high pressure the manual just says short circuit of the p sensor and/or harness. When we got the...
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    The two codes we pulled off the pvc were 26 and 27 by the way
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    Alright we got a chance to work on our machine today, we got a manual and checked codes by jumping connector in the cab, had a code for dp and pressure sensor on main pump. We had just installed a new dp but found out it was set to .4 volts out of the box so we adjusted that and reinstalled. The...
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    Thanks I believe I found a KM105E03 manual. Thanks for the part number on that. I’m going to check for codes in the next couple days and will post what I figure out. If the top controller is the ec controller then it is flashing a red light but the flashes are not the same some longer than other...
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    Maybe somebody will chime in with a link to the correct manual I need soon. Today after we replaced the dp sensor with no change we removed the angle sensor to see if maybe the previous owner removed it and reinstalled it with the dot 180 out. When we removed it when checked power and ground and...
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    Where would be the best place to buy the manual I need. I am new to the excavator stuff so I’m learning as I go. I have seen where people talk about there being several manuals
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    Can I check codes without having the dr ex diagnostic tool?
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    Hitachi ex120-2 intermittent slow hydraulics for all functions.

    Hello, a friend and I have recently purchased an older ex120-2 that has some hydraulic issues. When we bought the machine it would barely move and the pump area was full of soot from where the previous owner had been using it with a muffler pipe rusted off so all the exhaust was dumped into the...
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