Does anyone know how to disassemble a Mark IV coaster hub? I've gone through the Sturmey-Archer and Bendix sites online and don't find a match to my hub. A lot of them appear to be approached from the drive-side, usually by removing a circlip. My hub doesn't have a circlip that I can find. Some other hubs I saw have a brake arm on the left-hand side that lifts off after removing locknuts, etc. The brake arm on my hub won't budge.
On my hub, there is a thick ring on the drive-side that has a single notch. I was thinking maybe a spanner of some sort may be needed to wrench it off.
But, if anyone has experience with this hub, I'd appreciate hearing from you!
Thanks, Bikeman. I checked Sheldon's site over the weekend and learned a lot (who doesn't?). And you're right, the Mark IV is a Sturmey Archer. It just seems to differ a little bit from the exploded diagrams I saw. Another poster on C&V said that the drive-side notched ring is a lockring. So, I'm going to give that a shot soon.