BMW R 1100 S EVO, Maintenance Manual

Page: 85 / 95

34.20
Filling the rear control circuit
•
Remove rear reservoir cap with rubber
diaphragm.
•
Top up the brake fluid level to the “ MAX ” mark.
e
Important:
While filling and bleeding the system, do not allow
the brake fluid level to drop below the “ MIN ” mark,
air will otherwise be drawn into the brake system.
d
Warning:
Avoid rapid and forceful pumping of the brakes
when performing maintenance and repair work on
the BMW Integral ABS.
•
Draw off the brake fluid and simultaneously add
the new brake fluid in accordance with the se-
quence, using the ring spanner,
BMW No. 34 2 532 .
– Rear dosing cylinder (1),
– rear integral circuit(2)
– rear control circuit (3) and
– again, front dosing cylinder (1)
e
Important:
On account of the vacuum extraction process, it is
not possible to tell whether there is brake fluid in the
hose of the brake bleeding device when it is free of
bubbles.
It is therefore necessary to bleed the hose by hand
in the predefined sequence and in accordance
with the rules for bleeding.
•
Switch off the bleed device.
•
In sequence, bleed the:
– rear dosing cylinder (1),
– rear integral circuit (2)
– front control circuit (3) and,
– again, rear dosing cylinder (1)
using the ring spanner, BMW No. 34 2 532 , and
in accordance with the rules for bleeding.
Rules for bleeding:
1. Press the brake lever slowly until the brake light
switch clicks (snifter hole closed).
2. Open the bleed screw.
3. Press the brake lever fully and close the bleed
screw.
4. Release the brake lever slowly.
5. Repeat steps 1 to 4 until the brake fluid is clear
and has no bubbles.
•
Fit the protective caps on the bleed screws.
•
Top up the brake fluid until it reaches at least to
the “ MIN ” mark.
•
Wipe the rim of the reservoir, the rubber gaiter
and the cover to remove brake fluid, and carefully
reassemble the components.
•
Recheck the brake-fluid level.
•
Place the motorcycle on its centre stand.
Required level
not below ......................................................... MIN
Brake fluid ...................................................DOT 4
R28000050
MAX
MIN
R28340110
1
2
3
R28000050
MIN