tban52 said:Well now you've got me worried. My MK-III just passed 15k. Shifts nice and smooth, no movement on the kickstart, no evidence of metal when the gear oil is drained. I don't know if the PO maybe changed the bearing??? Is this problem absolutely gonna happen? Or were some gearboxes assembled with different bearings? Is there any way to tell?
I could make this part of my winter projects list, but there are a lot of potential miles between now and then. Just how concerned should I be? I'm liable to run into something while I'm staring down at the kickstart.......
lrutt said:So looking at the old brits website I see they have 3 or 4 different bearings listed. I'd just like to replace with a like ball bearing. I don't care to go with an expensive roller and mess with shimming. So which of their ball bearings is the one to get? It's hard to decipher from their site which would be best.
1975 all MK-IIIs had the upgraded layshaft bearings.
tban52 said:He told me that in 1975 all MK-IIIs had the upgraded layshaft bearings.
Foxy said:Good link Jim, I see the site states that a brass cage is stronger and for heavier duties, the bearing I purchased is a FBJ and has the brass cage. Incidently the Japanese Co FBJ claim to be the first to ever manufacture bearings FWIW.
britbike220 said:This is probably a stupid question, but since I don't know anything about bearing tolerances and bearing uses why does it say "nylon" cage?