[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: '82 urq: Uneven Brake Pad Wear (right to left)
# In message <01bd0a71$4c3b9f80$LocalHost@default> "Ian J Haseltine" writes:
# > >2) The device under the master cylinder, that has the brake lines going to
# > >it, is weeping fluid very, very slightly. What is this device for?
# > >Proportioning valve?
# > Yeah, also known as a bias valve. Mine was leaking when I bought the Urq,
# > about a teaspoonsfull (5ml) when standing overnight in my garage. Replaced
# > it ASAP, dead easy job, then bled the system with a pressure bleeder.
# It has no external mechanical input - where was it leaking from?
There's a shiny cap that covers the internal mechanicals ... the fluid
leaks from inside this cap (IME) ... probably the seals on the mechanism
that allows full rear braking force when there's a fault in the front
brake circuit. I've had to replace this part on the urQ once ... many
moons ago ... and just did the same on the '85 4kQ ...
# The evening before he'd been ridiculing the idea that a car might keep
# up with a bike. He kept repeating: "But the road's wet" like a mantra.
... common misconception ... bikes can be much quicker than cars ... but
when you think about the fact that you've got only two tiny contact pat-
ches through which all of the drive/brake/lateral forces must be communi-
cated and the consequences of going a bit over the edge are a bit more
drastic reason often wins out ...
San Jose, CA (USA)
5 Audis + 1 BMW k1