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Motorcycle BMW R1150RT. Manual - part 14

00.52

34 00 082

Bleeding/changing brake fluid

in rear control circuit

–

Place the motorcycle on its main (centre) stand.

–

Fuel tank removed.

Attention:

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

•

Remove right case, if necessary.

•

Remove small right side fairing panel.

•

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

•

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

•

Connect the brake bleeding device to bleed
screw (1) of the rear metering cylinder, but do
not switch on.

Warning:

Do not use vacuum extraction to change the brake
fluid in the control circuits or bleed the control cir-
cuits.

Attention:

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.

Warning:

When performing maintenance and repair work on
BMW Integral ABS, never pump quickly or vigorous-
ly.

•

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, BMW No. 34 2 532, 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.

•

Fit the protective caps on the bleed screws.

R22000151

R28340110

00.53

•

Correct the brake fluid level.

•

Wipe the rim of the reservoir, the rubber dia-
phragm and the cover to remove brake fluid, and
carefully reassemble the components.

•

Place the motorcycle on its centre stand.

Specified level
not below ......................................................... MIN

Attention:

After all the work on the brake system has been
completed, run a bleed test using the
BMW MoDiTeC.

•

Perform bleed test with BMW MoDiTeC.
(

00.31)

•

Install fuel tank.

Brake fluid....................................................DOT 4

Checking clutch operating fluid
level

(Inspections II and III)

Attention:

Keep the brake fluid in the clutch operating system
away from painted surfaces on the motorcycle be-
cause brake fluid attacks paint.

•

Place motorcycle on its centre stand.

•

Move the handlebars to the straight-ahead po-
sition.

Specified level with a new clutch liner:

........................................... Half way up sight glass

Note:

As the clutch lining wears, the fluid level in the res-
ervoir rises.

•

If necessary, remove reservoir cap with insert.

•

Correct the fluid level.

–

Mark in reservoir: same as brake circuit.

•

Reinstall the reservoir cap with insert.

•

Tighten the reservoir cap carefully and without
using force.

Brake fluid ...................................................DOT 4

R22000150

R22000190

00.54

21 52 005

Changing the clutch fluid

(Inspection IV)
every 2 years at the latest

Note:

The description applies to a brake system filling and
bleeding device with vacuum extraction of brake flu-
id at the bleed line.
If other devices are used, comply with their manu-
facturers’ instructions.

•

Place the motorcycle on its main (centre) stand.

•

Turn the handlebars to a position in which the
clutch fluid reservoir is horizontal.

•

Secure front wheel in position.

Attention:

Keep the brake fluid in the clutch operating system
away from painted surfaces on the motorcycle be-
cause brake fluid attacks paint.

•

Remove reservoir cap with rubber diaphragm.

•

Draw off the brake fluid and clean the reservoir.

•

Top up the brake fluid.

•

Pull back protective hose (1).

•

Wrap a cloth around the filler adapter.

•

Remove socket-head grub screw (2) from the fill-
er adapter.

•

Connect the brake bleeding device to bleed
screw (3).

•

Screw the bleed screw all the way into the filler
adapter (valve in filler adapter closed).

Attention:

While bleeding the system, do not allow the brake
fluid level to drop below the bottom edge of the ring
mark, as otherwise air will be drawn into the clutch
system. Bleed the system again if this happens.

•

Open the bleed screw by half a turn (valve open).

•

Draw off brake fluid until it emerges clear and
free from air bubbles.

•

Remove the bleed screw.

•

Disconnect the brake bleeding device from the
bleed screw.

Note:

On account of the vacuum extraction process, it
might not be possible to tell whether there is brake
fluid in the hose of the brake bleeding device when
it is free of bubbles.
In this case bleed the system manually.

•

Reinstall socket-head grub screw (2) in the filler
adapter.

Attention:

The motorcycle is not permitted on the road without
the grub screw in place and secure in the filler
adapter.

•

Correct the fluid level.

•

Reinstall the reservoir lid with rubber diaphragm
in position.

•

Tighten the reservoir cap carefully and without
using force.

•

Recheck the fluid level.

Tightening torque:

Grub screw in filler adapter .......................... 10 Nm

Consumables
Brake fluid.....................................................DOT 4

R22210010

00.55

Checking tightness of rear wheel
studs

(Inspection I)

•

Tighten the rear wheel studs with a torque
wrench.

Tightening torque:

Securing screws for rear wheel .................. 105 Nm

Checking rear wheel bearing play by
tilting wheel

(Inspection III)

•

Tilt the rear wheel to and fro across its axle.

–

If play is detected, fit new shims to rear wheel
drive or replace bearings (

33.5).

Checking swinging arm bearings,
adjusting if necessary

(Inspections I and III)

•

Grip rear tyre and try to move it sideways, brac-
ing against the frame.

–

If play is perceptible, remove fixed-bearing stud
and floating-bearing stud of the bearing in ques-
tion, clean the threads and reinstall (

33.20).

Checking function of side stand
contact switch

(Inspections I, II, III and IV)

•

Place the motorcycle on its centre stand.

•

Retract the side stand, if extended.

•

Disengage the clutch and select a gear.

•

Start the engine, without releasing the clutch le-
ver.

•

Extend the side stand.

Note:

The side-stand switch is in correct working order if
the engine stops when the side stand is extended.

Greasing the side stand pivot

(Inspections I, II and III)

•

Check freedom of movement of side stand and
grease if necessary.

•

Grease pivot point (arrow).

Lubricant:

................................................... Shell Retinax EP2

R22000310

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