Dismantling Horwood Bagshaw Super Spreader

Has anyone had the misfortune, to dismantle a towable 1 tonne Horwood Bagshaw super spreader. Trying to get the oscillating spreader section apart, as the person that was driving the tractor, didn't notice the noise of the yoke and the oscillating banging together. The shafts that go into the yoke bearings have disappeared, as well as the bearing that the yoke slides into. The main body of the spreading unit, cast metal and plastic funnel, has nylon dust covers top and bottom, is the part I'm trying to separate so that I can mount it, to repair/replace the shafts. If no one has dismantled one, would someone have a diagram of that section to work out how and what goes where.Regards and ThanksKryn