Bleeding ABS Brake Lines

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <199712012020.PAA28861@coimbra.ans.net> Daniel Hussey writes:

> The factory specifies to use a pressure bleeder, but I don't see any reason
> why a vaccum bleeder wouldn't work just as well.

a) A vacuum bleeder has at most 1 bar available - a pressure bleeder has
   (usually) 2 or so bar.
 
b) With a vacuum bleeder, air enters via the threads of the bleed screws.
   Eliminating this air from consideration is an art.

-- 
 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club