30-03-20, 12:18 AM
If you’ve avoided wet and salty roads it’s a fair bet that the pistons will be fine. I've never needed to split calipers... i see which piston moves easier then use a small G-clamp to hold it in while using the pedal to pump the difficult one out. Then piston pliers to wriggle the other out.
If the seals on the master cylinder haven’t been replaced recently I’d change ‘em. Yamaha say to do so every 4 years for all the hydraulics’ rubber components, though that is a bit over-cautious.
You can avoid problems with bleed nipples by greasing the threads when you put them in. And a squirt of WD40 down the hole after bleeding blows out that nasty hygroscopic brake fluid... just keep your face out of the firing line when you do.
