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  1. J

    Need info on Mitsubishi K4n engine

    I am grinding valves on the K4N. What is the proper tool/driver to seat the valve stem seals?
  2. J

    Mitsubishi mm30sr

    Sorry, I am unable to help you on the "proportional hookup". Maybe others can help.
  3. J

    Mitsubishi mm30sr

    If you have feedback, I would say they are not proportional. I am looking at the description of MM55SR solenoids, "using high response solenoids and differential transformer (lvdt)" Why are you doing away with your electronic controls?
  4. J

    Mitsubishi mm30sr

    The block with the five wires is the lvdt feedback to let the electronics know how much the spool has moved and which direction. This feedback cancels out the demand going to the valve to keep it from saturating in the open or close/in or out.
  5. J

    Mitsubishi mm30sr

    The led modules 14, 15 would indicate error codes. Tr15-17 and resistors are associated with these leds. Your error codes are being sent to the display below the joystick, I think.
  6. J

    Mitsubishi mm30sr

    I think the error diagnosis codes are being displayed on the display below the joystick. Graham Hamilton,s web site has a list of error codes. On page 277 of his info for the MM55SR at the bottom of page "error code B6 and A8 can be neglected". Page 275 code 33=swing in ,code 52=front/back of LH...
  7. J

    Mitsubishi MM40SR

    Have you tried the "Fordzilla fix" yet? If so how about an update.
  8. J

    Mitsubishi MM40SR

    an update I came to the conclusion my unit was no good as it was so I dug in. One thing learned, the control panel must have power/led/display on for the unit to have any function. On the schematic I have the bypass button has two wires one to the small remote unit and one to the main computer...
  9. J

    Mitsubishi mm30sr

    from info for 55sr problem in spool center 30=boom in, 31=arm in, 32=bucket in, 33=swing in,34=boom out, 35=arm out, 36=bucket out, 37=swing out I would think spool on hyd valve not being back in center with no demand or feedback error. best I can do, others may provide better info good luck
  10. J

    Mitsubishi MM40SR

    Thanks Fordzilla for the information. I am tackling a unit that has been butchered, to put it mild. In the monitor, diodes CR18 and CR17 have been cutout. Looks as though the leads were soldered together. The buzzer was completely removed, window for led readout was painted over(black). Also a...
  11. J

    Mitsubishi mm30sr

    please send me a copy of what you have, jcannon1@triad.rr.com
  12. J

    Mitsubishi MM40SR

    In dire need of schematic for Mitsubishi 55 SR. Any help will be appreciated !
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