the big nut had come undone when the split pin broke ,this allowed the pinion to smash back and forth so smashing the front pinion bearing and snapping the oil pump shaft :argh:. i took the pump out of another axle and put into no nuts to keep her going.:sweat:then i took the bits apart and managed to find some bright steel to make the new shaft, worked out the taper ,cut the thread ,drilled the dowel hole and cut the keyway this took longer than the rest of the job. had to do the keyway on the mill took a while to set up and find the right tooling. im happy with the result :-D, would of preferred silver steel but all to small :-(