Motorcycle BMW R1150RT. Manual - part 68

34.17

34 00 

Draining the Integral ABS brake 

system 

d

 Warning:

All repair and maintenance work on the 
BMW Integral ABS must be performed by trained, 
qualified specialists.
Comply with all maintenance and repair instructions 
and always work through the various steps in the 
correct order.
Use only new brake fluid from freshly opened con-
tainers.

L

 Note:

This description applies for the brake filling and 
bleeding unit with extraction of the brake fluid by 
partial vacuum.
If other devices are used, comply with their manu-
facturers’ instructions.

•

Remove front and rear seats.

•

Remove fuel tank.

Drain both wheel circuits

e

 Attention:

Do not allow brake fluid to come into contact with 
painted parts of the motorcycle as brake fluid de-
stroys paint.

Draining front wheel circuit

e

 Attention:

Integral brakes, the rear brake must be ready for 
use.

•

Open front wheel-circuit reservoir (1).

e

 Attention:

To prevent brake fluid entering plugs, do not discon-
nect plugs from the ABS pressure modulator.

•

Draw off the old brake fluid from the wheel-circuit 
reservoir and reinstall the cap.

•

Remove front brake pads.

e

 Attention:

Do not scrape the wheel – mask it off if necessary.

•

Use resetting tool, BMW No. 34 1 531, and 
locator, BMW No. 34 1 532, to force the pistons 
in the left and right brake calipers all the way 
back and hold them in this position.

•

Wrap cloths around the left and right brake cali-
pers.

•

Connect the brake bleeding device to the bleed 
screw of the left brake caliper, but do not switch 
on the device.

•

Switch on the ignition.

L

 Note:

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 
has completed.

•

Gently pull the handbrake lever until the pump 
just starts up.

•

Open the bleed screw.

•

Drain the wheel circuit with the pump.

•

Close the bleed screw.

•

Release the brake.

•

Disconnect the brake bleeding device from the 
bleed screw.

•

The procedure for draining the right brake caliper 
is the same as that for the left caliper.

•

Close the bleed screw.

•

Release the brake and switch off the ignition.

•

Disconnect the brake bleeding device from the 
bleed screw.

R28340110

1

R28000180

34 1 531

34 1 532

34.18

Draining rear wheel circuit

e

 Attention:

Integral brakes, the rear brake must be ready for 
use.

–

Install front brake pads, if applicable.

•

Open rear wheel-circuit reservoir (1).

e

 Attention:

To prevent brake fluid entering plugs, do not discon-
nect plugs from the ABS pressure modulator.

•

Draw off the old brake fluid from the wheel-circuit 
reservoir and reinstall the cap.

•

Remove rear brake pads.

•

Install adapter,  BMW No. 34 1 536, instead of 
the outboard brake pad.

•

Install resetting tool, BMW No. 34 1 531, with 
the handle toward the outside in the rear brake 
caliper, press the pistons fully back and secure 
them in this position.

•

Wrap a cloth around the brake caliper.

•

Connect the brake bleeding device to the bleed 
screw, but do not switch on the device.

•

Switch on the ignition.

L

 Note:

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 
has completed.

•

Gently press the footbrake lever until the pump 
just starts up.

•

Open the bleed screw.

•

Drain the wheel circuit with the pump.

•

Close the bleed screw.

•

Release the brake and switch off the ignition.

•

Disconnect the brake bleeding device from the 
bleed screw.

R28340110

1

R28000170

34 1 536

34 1 531

34.19

Draining control circuits

e

 Attention:

Do not allow brake fluid to come into contact with 
painted parts of the motorcycle as brake fluid de-
stroys paint.

Draining front control circuit

•

Turn the front wheel to a position in which the 
brake fluid reservoir is horizontal and secure the 
handlebars in this position.

•

Wrap cloths around the reservoir.

•

Remove front reservoir cap with rubber dia-
phragm.

•

Draw off old brake fluid and clean the reservoir.

•

Draw off the brake fluid from the circuits in the 
correct sequence, using ring spanner, 
BMW No. 34 2 532:

–

front metering cylinder (1),

–

front integral circuit (2) and

–

front control circuit (3).

Draining rear control circuit

•

Remove rear reservoir cap with rubber dia-
phragm, draw off the old brake fluid and clean 
the reservoir.

•

Draw off the brake fluid from the circuits in the 
correct sequence, using ring spanner, 
BMW No. 34 2 532:

–

rear metering cylinder (4),

–

rear integral circuit (5) and

–

rear control circuit (6).

R28340110

1

3

2

R28340110

4

5

6

34.20

34 00  

Filling and bleeding Integral 

ABS system

d

 Warning:

All repair and maintenance work on the 
BMW Integral ABS must be performed by trained, 
qualified specialists.
Comply with all maintenance and repair instructions 
and always work through the various steps in the 
correct order.
Use only new brake fluid from freshly opened con-
tainers.

L

 Note:

This description applies for the brake filling and 
bleeding unit with extraction of the brake fluid by 
partial vacuum.
If other devices are used, comply with their manu-
facturers’ instructions.

–

Place motorcycle on its centre stand.

–

Remove front and rear seats.

–

Remove fuel tank.

Filling and bleeding control circuits

e

 Attention:

Do not allow brake fluid to come into contact with 
painted parts of the motorcycle as brake fluid de-
stroys paint.

Filling the front control circuit

–

Turn the front wheel to a position in which the 
brake fluid reservoir is horizontal and secure the 
handlebars in this position.

–

Wrap cloths around the reservoir.

–

Remove front reservoir cap with rubber dia-
phragm.

•

Top up the brake fluid levelup to the to the “MAX” 
mark (arrow).

e

 Attention:

During the filling and bleeding procedure, make sure 
that the fluid replenishing hole is always below the 
level of the brake fluid, or else air will be drawn into 
the brake system.

•

Draw off the brake fluid from the circuits in the 
correct sequence while topping up continuously 
with fresh brake fluid and using ring spanner, 
BMW No. 34 2 532:

•

front metering cylinder (1),

•

front integral circuit (2),

•

front control circuit (3) and 

•

front metering cylinder (1) for the second time.

e

 Attention:

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.
Consequently, the system must be bled again 
manually in the specified sequence and in ac-
cordance with the instructions for bleeding the 
brakes.

KR340280

R28340110

1

3

2