Loosen the upper section of the first blee-
der screw/hollow bleeder screw by approx.
one half rotation; in doing so, hold the lower
section of the bleeder screw in place using
a wrench (Figure 1) so that it does not come
loose from the brake caliper.
In this position, the check ball just barely
closes the flow opening by means of spring
action, so that the brake system is sealed
when it is not under pressure.
Thus, brake fluid cannot escape from the
bleeder screw/hollow bleeder screw and
air cannot intrude into the brake system.
If the upper section is opened too far, the
check function no longer works effectively.
If it is not opened far enough, the ball stri-
kes against the upper seat (clicking sound)
and prevents fluid from flowing through.
Using a hose, connect the collection con-
tainer for the used brake fluid to the hose
connector of the bleeder screw/hollow
bleeder screw (Figure 2).
Activate the main brake cylinder (e.g. by
pulling on the hand brake lever) and in
this way press brake fluid through the
bleeder screw/hollow bleeder screw into
the collection container.
Release the hand brake lever. The check
ball immediately closes the flow opening
and used brake fluid and air can no lon-
ger flow back into the brake system.
Repeat the procedure until the desired
bleed result is reached (the exiting brake
fluid has no air bubbles (Figure 2); the
brake has the right pressure point).
2
ENGLISH
17
1