Well, Discovered a couple of things.
First, there are no dedicated rear proportioning valves in my car. I'm guessing the distribution block does this? Or perhaps just the differential piston/pad sizes?
I took apart the distribution block with the warning switch. Simple little thing with a couple of springs, four O rings and some sliding metal. The dealership couldn't get new O rings and I didn't want to drop $90 on a new one. So, after cleaning it up, installing the O rings in different positions, and bleeding the system, I got pressure back to my RR caliper! Still not sure what problem could have happened in the distribution block, but cleaning it fixed it.
thanks,
simon
|