Only bleeding the rear wheel circuit
Draw off the old brake fluid from the wheel-circuit
Remove rear brake pads, force back the brake
pistons and secure the pistons in this position.
Wrap a cloth around the rear brake caliper.
34 1 561
34 2 541
Fill rear wheel-circuit reservoir with brake fluid up
to "MAX" mark and install cap,
BMW No. 34 2 541.
Connect 1.5m (4.9214 ft) silicon
hose, BMW No. 34 1 561, to the bleed screw.
If necessary, use a cable tie to secure the bleed
hose to the bleed screw.
Switch on the ignition.
After switching on the ignition, always wait for the
BMW Integral ABS to complete its self-diagnosis.
Do not operate the brake lever until self-diagnosis
Very gently press the footbrake lever until the
pump just starts up.
Open the bleed screw.
Pump the brake fluid with virtually no pressure
until the hose is full of brake fluid.
Connect end of hose to
cap, BMW No. 34 2 541.
Pump the brake fluid with virtually no pressure to
begin with, then vary the brake pressure.
Check that the brake fluid in the hose does not
If the fluid foams, proceed as described in the sec-
tion on bleeding and changing brake fluid in rear
wheel circuit. (
Pump brake fluid through the system until it is
clear and free from air bubbles.
Close the bleed screw.
Release the brake and switch off the ignition.
Disconnect silicon hose, BMW No. 34 1 561,
from bleed screw and drain the hose.
Remove cap, BMW No. 34 2 541.
After changing and/or bleeding the brakes, always
top up the fluid in the wheel-circuit reservoir to the
correct level in accordance with the instructions.
Fill rear wheel-circuit reservoir with brake fluid in
accordance with instructions.
Check operation of the brake system with the ig-
nition switched on.
After all the work on the brake system has been
completed, run a bleed test using the
Brake fluid ...................................................DOT 4
Bleed screw in rear brake caliper ................... 6 Nm
Brake caliper to rear wheel drive .................. 40 Nm