You are right Richard, thanks for your interest! It is winter over here and quite chilly outside by the time I get home in the evenings, so very little productive work going on at the moment. I had my nephew, an earthmoving equipment dieselmech, troubleshoot the lack of power steering on the sarry. He opened the steering box and guess what!? More silicon found in the internals. He cleaned it up a bit, reassembled, and adjusted one of the valves, it reacts a bit better to the one side but turning to the other side is still bad. I guess both the valves will also have to come out, be cleaned and checked before we can go much further on this challenge. It took some figuring out from the drawing on how the power steering operates, the design does seem quite simple with the system relying on back pressure to get the job done!
Another big job still outstanding is the centre bevelbox on the left side, it is leaking oil badly. I have already purchased the seals but don't look forward to removing the drive shafts for access, remembering the hassles on the driver's right hand side! I hate to think that the fuel tank might have to come out again. This much said, the gearbox is closed up but the panels not reinstalled for this reason. Come summer, there will be (several) late nights again!