Also cracked on and into the gearbox this afternoon...... Quite clean internally, a little sludge, but overall not too bad. The bronze bushes on the drive axle are quite badly worn as well as the axle itself........ Damn!!! Axle was originally 1" diameter, now measures 0.985 at the most worn point. Bushes should be 1.125 o.d x 1.0 i.d x 1" Jim Beacon is going to help me with this issue! Maybe turn the shaft down and make bushes to fit? Will then need to make some spacers to make the wheels fit again!!!
In the meantime will strip the handlebars down, dismantle the ploughing wheels and get them to the shot blasters.
Here's the gearbox once opened up.........