BMW R1150RT - MAINTENANCE INTEGRAL ABS Wartungshandbuch PDF herunterladen (Seite 84)

34.21

Filling the rear control circuit

•

Remove rear reservoir cap with rubber dia-

phragm.

•

Top up the brake fluid level to the “MAX” mark.

e Attention:

While filling and bleeding the system, do not allow

the brake fluid level to drop below the “MIN” mark,

as otherwise air will be drawn into the brake system.

d Warning:

When performing maintenance and repair work on

BMW Integral ABS, never pump quickly or vigorous-

ly.

•

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:

– rear metering cylinder (1),

– rear integral circuit (2),

– rear control circuit (3) and

– rear 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.

Bleeding the rear control circuit

•

Switch off the brake bleeding device.

•

In the following sequence, bleed:

– rear metering cylinder (1),

– rear integral circuit (2),

– rear control circuit (3) and

– rear metering cylinder (1) for the second time

using ring spanner, BMWNo.342532, in accord-

ance with instructions for bleeding.

Instructions for bleeding:

1. Slowly depress brake lever until brake-light

switch clicks (blow-by bore closed).

2. Open the bleed screw.

3. Slowly depress brake lever to full extent of its trav-

el and close the bleed screw.

4. Slowly release the brake lever.

5. Repeat steps 1 to 4 until the bake fluid is clear

and free of bubbles.

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