Got the swingarm back in today. Boy was that fun: I had to knock up a drift to press the UJ into its bearing. I decided against bearing lock fluid because it's bleeding tight as it is and I stick to the principle that some poor sod might have to dismantle it one day, and that poor sod could well be me. So: shiny new UJ & gaiter fitted. Swingarm is now a lovely Hammerite silver-grey. Wheel & brake caliper on and... the brake pedal has no resistance; nil; nada. So I dug out the Mityvac, which sucked a little fluid but mostly air from the nipple itself. I dribbled a bit of oil onto the nipple threads, which reduced the air intake, but apart from that, no joy. Then I started unbolting stuff, with the inevitable dribbles of brake fluid every-bleeding-where. It seems that the master cylinder is weeping slightly and the piston isn't *quite* returning all the way, so the feed hole from the reservoir stays blocked. I did manage to shove it back a bit using a thin allen key, which opened the hole, but as soon as I pumped the piston it simply returned to the not-quite-far-enough position. In fact, I had noticed over the last few weeks that the pedal was travelling a fraction further than it should, so now I know why. There's no obvious way of opening this cylinder up and cleaning it out, so it looks like I'll need a replacement. Arse.
