Changing Brake Fluid And Bleeding Brake System; Change The Brake Fluid Annually; (Inspection Iv); Bleeding Front Brake Circuit/Changing Brake Fluid - BMW R 1150 GS Repair Manual

Changing brake fluid and bleeding
brake system

Change the brake fluid annually

(Inspection IV)

Bleeding front brake circuit/changing
brake fluid
L
Note:
This description applies to brake filling and bleeding
devices with vacuum extraction of the brake fluid at
the brake caliper.
If other devices are used, comply with their manu-
facturers' instructions.
•
Remove brake calipers.
e
Caution:
Keep the brake caliper parallel to the brake disc
when removing and installing.
There is a risk of damage to the brake pads.
•
Remove the brake pads.
•
Release clamps securing handlebar.
•
Turn the front wheel and the handlebar to a posi-
tion in which the brake fluid reservoir is horizon-
tal.
•
Tighten the handlebar and secure the front wheel
in this position.
•
Remove reservoir cover with rubber diaphragm.
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Caution:
Do not allow brake fluid to come into contact with
painted parts of the motorcycle as brake fluid de-
stroys paint.
34 1 500
•
Use resetting tool, BMW No. 34 1 500, to force
the pistons of the right-hand brake caliper fully
back.
•
Take out the resetting tool and insert spacer,
BMW No. 34 1 520, in its place.
•
Use resetting tool, BMW No. 34 1 500, to force
the pistons of the left-hand brake caliper fully
back, and allow the resetting tool to remain in
position.
•
Top up the brake fluid level to the "MAX" mark
(arrow).
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Caution:
When adding brake fluid, do not allow it to enter the
holes for the reservoir lid screws.
•
[ABS] Begin by bleeding the pressure modula-
tor.
.............. See Additional information for [ABS]
a
2
1
•
Wrap a cloth around the filler adapter on the
right-hand brake caliper.
•
Remove the socket-head grub screw (1) from the
filler adapter on the right-hand brake caliper.
•
Connect the brake bleeding device to bleed
screw (2).
•
Screw the bleed screw all the way into the filler
adapter (valve in filler adapter closed).
•
Open the bleed screw by half a turn (valve open).
•
Draw off brake fluid until it emerges clear and
R21000270
free from air bubbles.
e
Caution:
While bleeding the system, do not allow the brake
fluid level to drop below the "MIN" mark, as other-
wise air will be drawn into the brake system.
Bleed the system again if this happens.
•
Remove the bleed screw.
•
Disconnect the brake bleeding device from the
bleed screw.
•
Reinstall socket-head grub screw (1) in the filler
adapter.
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S000261
00.31