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  1. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Oil and fuel pressure gauges added. Note the needle valve on the fuel line that bleeds off too high of pressure to the injector pump. Poor mans regulator.
  2. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Here's the mechanical lift pump on the Thermo King (DI-2) engine. Shown with new primer pump and banjo bolt to barb fitting.
  3. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Remember that both fuel pumps will draw through the Racor when the electric pump is running. This filter gauge shows allowable readings for either 1 or both pumps running.
  4. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Okay, Back to the fuel system. The electric pump has a built in screen (80 Micron). Serves no purpose since it's after the 30 micron filter. Well, maybe if something lets go in that Racor filter I guess it would catch all the big stuff. Installed; Since the pumps are after the Racor, I...
  5. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    One more angle for those rear mounts.
  6. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    10 Micron engine mounted Filter Look at those rear relocated engine iso mounts with that custom crossbar.
  7. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Next Up Fuel System We all know that almost all no starts are caused by fuel issues!! So I set up this Super Cool Fuel/Pump and Filter set-up. I added an electric pump and kept the Mechanical. I can switch back and forth with (2) 3-way valves. The engine mounted filter is a smaller 10 micron...
  8. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    A pic of the battery holders base plate. I had to sacrifice the nice factory canister air filter :(
  9. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    I couldn't bend this pipe manually. (I need more tools!) This stupid pipe took multiple dry fits and lots of little mods to make room for that radiator. It was way thicker than I thought. This little tractor is stout. For ex.
  10. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Rigged up this to help weld it up up. Notice the bearing carousal plate under the chuck. Now I could weld it continuously all the way around non stop. No leaks the first time!
  11. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    I found that the 3 hydraulic pump hoses were a metric size that was hard for me to procure. So I welded collars on the manifolds so I could use easily sourced suction rubber hoses.
  12. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Here's the electric slim radiator fan I had to use to make room for the extra cylinder.
  13. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    I was curious how much the hydraulic fluid actually cooled so I put a thermostat on each side of the squiggly pipe to see if spending all that time cutting it in two (twice) and rewelding it was worth keeping it.
  14. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Had to ditch the belt cooling fan. Found a slim electric pusher fan and squeezed it between the radiator and hydraulic S turned return line. I guess tats Komatsu's idea of cooling the hydraulics : )
  15. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Relocated the battery and made this adjustable tray
  16. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Test fit engine with new rubber isolators
  17. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Yes, I like pictures. Here's more! Welded, drilled and taped front engine mounts.
  18. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    Identical looking after failed too. This is preparing the Thermo King flywheel to weld my adaptor to a flat surface. I know you machinist out there will have a good time with this one.
  19. djbobo

    My Komatsu PC50UU-1 Engine swap W/Pics

    More details for flywheel to pump adaption Thermo King flywheel dry fit for adaptor requirements shown with new Centaflex coupling - Top Komatsu flywheel; Bad rubber @ 3300 hrs on a 1991 - Bottom
  20. djbobo

    Manual for the KOMATSU PC50UU

    Thanks tool king!
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