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  1. Sam1734

    Cat D6b over heating

    Is there a special attachment to pressure test the radiator on the D6B?
  2. Sam1734

    Backhoe outrigger cylinder drift when stopped.

    I just repacked both of my tilt cylinders, and noticed I'm drifting much faster than I would like. I also noticed my lift cylinders were raising slowly without my touching the control. The machine has been down while I rebuilt the transmission for several months until today not really sure...
  3. Sam1734

    JCB Powershift transmission cutch pack pistons

    Hello All, has anyone here rebuilt a JCB Powershift transmission? I am in the process, and things were going good until I realized the original JCB composite pistons were required to be replaced with a aluminum piston. No Problem....However when I replaced the piston, I learned the piston liner...
  4. Sam1734

    Cat D6b over heating

    Ok, I just got the new PRV and immediately I noticed that the spring is much stronger than the old part, and the new part has a seal for when it closes off. The old part did not have a seal period, So I assume this is a contributor to the leaking through the overflow. Going to run it without the...
  5. Sam1734

    Cat D6b over heating

    This is more like what I'm seeing.
  6. Sam1734

    Cat D6b over heating

  7. Sam1734

    Cat D6b over heating

    It looks like a baffle inside the top of the radiator and unable to see anything but the flat plate inside. Filler neck is made into the top of the radiator top.
  8. Sam1734

    Cat D6b over heating

    No
  9. Sam1734

    Cat D6b over heating

    Yes sir it is.
  10. Sam1734

    Cat D6b over heating

    The radiator has a flat plate inside that the stud is mounted and unable to see the radiator.
  11. Sam1734

    Cat D6b over heating

    I’ve not put over 100 hours since, just minor farm work.
  12. Sam1734

    Cat D6b over heating

    I will try that, and no I ordered it from regal. However it was different from the original cap. It was cast iron rather than the steel plate original. I suspect the stud inside the radiator might be bent a little because it wasn’t seating correctly. I discovered this when I removed it to check...
  13. Sam1734

    Cat D6b over heating

    Could be. After I done the head work I refilled to manual specs which I think was 7 gallons. I don’t have the manual with me at the moment
  14. Sam1734

    Cat D6b over heating

    If it reaches normal temperature the cooling rises to the rim of coolant nozzle and overflows
  15. Sam1734

    Cat D6b over heating

    Only circulating and temp stays normal
  16. Sam1734

    Cat D6b over heating

    Not yet waiting for pressure testing equipment
  17. Sam1734

    Cat D6b over heating

    Just figured the main leak, the radiator cap seal doesn’t seal well so I added another thicker gasket which stops the leak but water is overflowing through overflow tube and temps getting up to about 240
  18. Sam1734

    Cat D6b over heating

    Kind of leaks out like a water level in a clear hose but when you look on the inside engine bay the water seems to be pouring out from the top
  19. Sam1734

    Cat D6b over heating

    Yes it was clear. And the radiator cap is leaking. Kind of like when you have water in a glass jar and overflowing after the engine starts
  20. Sam1734

    Cat D6b over heating

    I just put new gaskets on and the old PRV and ran it a while, about 20 minutes and the temp wouldn’t get over 190. But the coolant was still leaking from the new cap like it is overflowing. Water cool to touch in radiator. But seems to be circulating. Maybe thermostat isn’t reaching temperature...
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