Aussie Ken
Member
I have a friend here in Australia that has this tractor -I haven't been out to see it yet - intermittently the hydraulics will quit - no power steering, 3 point, scv. park it for a few days and try it and everything works again - last week he used it for 2 hours and then the hydraulics stop working -if he revs it wide open the loader will lift slowly - I told him to change the oil and filters and clean the screen - he did there was some stuff on the screen but it wasn't plugged . he started it and drove it a short distance - the steering would work while driving - which is basically manual steering, but the transmission seemed to shift fine - he pulled the line from the valve block that goes to the main pump, and there was lots of oil flow - I got him to pull the stroke control valve and it and brought it to the shop - it all seems fine - he is going to install the stroke control valve tomorrow and adjust the pressure screw at the bottom to see if he gets some hydraulic response - with out testing pressures, it is hard to diagnose - he is thinking of replacing the main pump, but I am reluctant yet since it seems to be an intermittent problem. where else can he check before I am able to get to his place -I have the original service manual, and there are testing procedures - which includes testing the main pressure regulating valve - I don't have the proper fittings yet - any ideas?