At 07:55 AM 6/16/2011, J Stewart wrote:
>Speaking of weak brakes, what is the purpose of 
>disconnecting the vacuum line to the power 
>booster when bleeding the brakes (per Bentley)?�

This is strictly a guess: ever since people have 
started compressing fluids they've been finding 
out the hard way how penetrable human skin it.  A 
grease gun injury, for example, is a terrible 
thing that often leads to amputation because the 
grease dissects in along the muscle fasciae and 
is near-impossible to retrieve.  Brake fluid 
would I suspect be similarly nasty.  Having the 
boost available could make it more likely for a 
cutting stream of fluid to come jetting out.

Yours,
David