Nice machine once sorted out. The worlds firist power shifting tractor transmission.
Are you aware that there is a no-longer-available transmission oil filter beneath the transmission top cover?
Tony Jacobs, here in the US, has been speaking with WIX to see if they will continue to manufacture the filters but I have not heard any update about this issue lately.
Tony: If you are listening, please let us know what, if anything, is happening. I have only one left, which I plan to use when I rebuild the SOS in my 64 4000.