I just finished replacing my drive shaft and final drive unit with\nsalvaged parts on a Vulcan 750. I drained the old gear oil out of the\ndrive unit and replaced it to the proper lever and greased the parts\nwith the correct grease as called for in the shop manual. Today, I\ntest rode it for about 30 miles at speeds up to 70 mph along with\nseveral stops and starts. The ambient temps were in the middle 80's\nalso. Upon returning, I thought it might be a good idea to check the\nfinal drive for any heating. It was more than warm to the touch but\nnot hot enough to not be able to lay my hand on it.\nMy question to all of you that are much wiser than me is.......does\nthat sound about correct for the final drive warming like that? Or,\nshould it not warm up at all?