There's two types of brake balance switch. I think the one on the non-servo
master is left screwed in but you have to bleed the first circuit again very
carefully until the light just goes out. With the servo master you unscrew
the switch, bleed, then screw back. The difference is the first is a
non-latching shuttle that is moved away from each circuit as it's being
bled, the latter is a spring loaded shuttle that recentralises itself as
long as the switch is unscrewed.
----- Original Message -----
> ... Now Haynes says when bleeding with PDWA
> start in the front closest to the master cylinder then work away
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