> Took the brakes apart - didn't think to mark left/riight inner/outer and
> noticed that on TWO calipers there is a small somewhat rusty ball bearing in
> one end
The ball bearings go on the top of the outer calipers. They act
as a seal against the machined seat inside the caliper - the bleeder
screw, which you'll note is NOT pointed like most screws but rather
dished to apply pressure against the BB, presses the BB tightly
into the seat.
If the BB is rusty (they usually are), it will not properly seal
and you'll leak brake fluid. A full-service hardware store should
have new ones. I bought a handful so I can replace them whenever
I bleed the brakes. Take a thin screwdriver, place a magnet against
the shaft, and then you can lift the BB out (the BB sticks to the
now-magnetized screwdriver).
As Linda points out, you toss the BB if you use speed bleeders.
But if you use the factory bleed screw, you need the BB for a
proper seal.
-- John
John F Sandhoff sandhoff@csus.edu Sacramento, CA
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