RE: Milano Brake Bleeding, tiny bubbles

[Hirsch <Catenary@domain.elided>]

Gerry Lehmann wrote:
 =

>> ...A possible cause that I've found relates to the
installation of new calipers. I believe that when new
calipers are installed, there are small air bubbles that
actually cling inside the new hardware when it is first
wetted...

The solution was to drive it a bit (carefully) with the
low peddle and then come back and bleed again. The driving
part seems to knock the stubborn air loose (there is something
pot holes are good for!). In my case the air came out quite
quickly when bled the final time after driving. <<

In Fred Puhn's Brake Handbook (HPBooks) he recommends the
following:

"Brakes are sometimes spongy after manual bleeding. Slow pedal
movement avoids turbulence that would otherwise form bubbles.
But, slow fluid flow will not dislodge small bubbles that cling
to rough surfaces. If you tap the calipers gently with a plastic
mallet while bleeding, this will help dislodge those
stubborn bubbles."

Rich Hirsch
Editor, i Saluti, St Louis AROC
Website: http://www.catenary.com/isaluti

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