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  1. M

    Section for komatsu d20,21 and similar grey market dozers

    We had already checked the strainer but did so again. Clean and does not seem to be the issue. Due to a death in the family things got put on hold until last week. Took the pump, modulator valve, and direction/speed/inching valve to the Komatsu service facility. They indicated the pump...
  2. M

    Section for komatsu d20,21 and similar grey market dozers

    Greetings from Linden Tennessee. I own a D21P-5 and have used it for several years. Recently, once the dozer has run 10-20 minutes and is warmed up, a whine starts and track power starts to drop and both tracks will stop when you pull the left lever. We put a gauge on the test port on top...
  3. M

    Hitachi Ex120 Problem

    Does anyone have the part numbers for the screens/strainers that go in the banjo fittings? I downloaded the 120-2 parts document and am having trouble finding them in the fuel or engine sections. Also, I could use the shop/service manuals if anyone can provide. At this time my 120-2 runs...
  4. M

    Hitachi Ex120 Problem

    Fuel is not the problem. Went through all fuses and replaced with new/correct ratings and now major changes. Everything seemed to work except the cab would not swing in either direction. I pulled fuse 14/stop M and cab would swing for a few seconds and then stop. Pulled out fuse 7 and...
  5. M

    Hitachi Ex120 Problem

    Please send 120-2 manuals to melson_michael@yahoo.com I have the issue with engine dying under any hydraulic load. Does the fluid level usually remain the same in the tank if the control valve is working and allowing the fluid to return? We have cleaned fuel side filters/strainers...
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