According to the speedo, this box has done about 40 thousand miles in 22 years or so. I have a rebuilt one to replace it with so that'll go in & I hope it leaks less. The old one will get a sealed bearing.
Thanks for the correction Ian.
While we're here, another question. The sliding plate on my inner chaincase has one open & one closed slot to accommodate the securing bolts.
Parts lists show open slots on both ends so I can't get an idea from them. Which end of the plate, open or closed, should face which way? I can't see that it makes any difference but perhaps I've just had a boy's look.
Because I was trained in engineering sciences I look for anything that can go wrong.
SO when I do mine the closed end goes to the back lest a thrown chain possibly pick up the open end.
I also fit a loose nylon tube over the spacer tube to prevent a loose or collapsed chain eating through the steel
