I managed to get my troublesome brake drum off today, last time I was trying I sprayed loads of WD40 at it and in the meantime it must have worked it's magic.
Inside I found the piston had a big hole worn into the seal on one side, the whole of the inside was greasy, I assume hydrolic fluid. the rearmost shoe also seemed loose, I could rock it back and forth (or side to side more correctly), it seemed something was missing but I have no idea what, it seemed to have all the same parts as the foremost shoe.
I cleaned everything up as best I could with rags and fitted a new cylinder (pattern) that I ordered months ago, refitted, adjusted etc.
I then set-up the gunsons wonder gadget thing (eezi-bleed) which worked like a charm, it holds about half a litre of brake fluid and in total I put around 3/4 of a litre through the systep, concentrating on the new cylender and the opposite side at the rear also.
I'm fairly sure it's properly bled now and that should also have renewed the fluid in the system so I'm happy with that.
However the brakes are definatly better but I'm not happy with them yet.
I intend to buy new drums and shoes for the rear (do the shoes come with new springs and other gubbins?)
And new pads for the front while I'm at-it. I still have the new cam-adjuster kit here which I'll fit at the same time as the drums and shoes. Then if that doesn't make me happy... who knows......
Whoever first suggested the eezi-bleed, thank you, lovely tool that.
Regards. Mark.(AKA, Mr.Nice.)