Repairs/Maintenance on Scarlett's Final Drive - the prep work

About two days ago I got the word from Randy F. (retired Ural dealer) that he was willing to do the work involved with replacing leaking seals and the worn driven gear hub on the final drive.To prepare the final drive for transport to Randy's shop, I removed it (carefully slow due to my still recovering back) and cleaned it up.The final drive is the component which takes rotating input from the primary drive shaft coming out of the motorcycle's transmission; converting it to rotating motion and "driving" the pusher wheel when in 1WD and also the sidecar wheel when in 2WD.Here's the final drive, sort of cleaned up:the arrow points to the driven gearhub's teeth, onto which the rear wheel ismated onto....The worn out teeth of the driven gear hub are seen below. Quite pointy.Below pic shows the replacement driven gear hub, note what the gear teeth should look like when compared to the above pic:Here's the mostly cleaned up final drive, along with the new driven gear hub that Randy will…