Left hand wheel would lock up and be very non-progressive- had thought it was just badly adjusted. Undid the bearing, got the shoe bias adjustment nut loose and pulled the drum off.mercrocker wrote: ↑Mon Feb 17, 2020 7:06 am Bugger. What's happening there, Phil - scored s/cylinder bores?
Some nimrod had overpacked the hub and it had forced grease part the seal and onto the shoes.
I took a look to see if both shoes were moving freely, and only the trailing shoe was shifting at all. Judicious use of levers saw the front piston move, which promptly started pissing brake fluid all over everything.
Being as there rear brakes don't do much when the pedal is depressed (handbrake mechanical cable linkage works well) I decided to just halt and replace all four cylinders and flexible lines for new, partly because they're unknown quantity and also because it's a single system.
It's a pain but I'm not looking at it as a setback; I'd much rather have catastrophic hydraulic failure of the service brakes in a controlled environment than on the road at 65mph when they're needed in an emergency.
Phil