2006 BMW MOTORRAD K 1200 GT brake sensor

Tyre pressure control
RDC
OE
FunctionA sensor integrated into each
tyre measures the air tem-
perature and the air pressure
inside the tyre and transmits
this information to the control
unit.
Each sensor has a
centrifugal-force tripswitch
that does not enable
transmission of the measured
values until the motorcycle
has accelerated to about
30 km/h. The display shows--
for each tyre until the
tyre-pressure signal is
received for the first time. The
sensors continue to transmit
the measured-value signals
for approximately 15 minutes
after the motorcycle comes to
a stop. The control unit can
administrate four sensors, so
two different sets of wheels
with RDC sensors can be
alternated on the motorcycle.
An error message is issued
if wheels without sensors
are fitted to a motorcycle
equipped with an RDC control
unit.
Temperature
compensationThe tyre-pressure readings
shown by the multifunction
display are temperature-
compensated; the reference
tyre temperature for these
readings is always 20 °C.
The air lines available to
the public in petrol stations
and motorway service areas
almost invariably show
temperature-dependent
tyre pressures, so in most
instances these gaugereadings will not tally with
the readings shown by the
multifunction display.
Tyre-pressure rangesThe RDC control unit differ-
entiates between three air-
pressure ranges, all of which
are parameterised for the mo-
torcycle:
Air pressure within permit-
ted tolerance.
Air pressure close to limit of
permitted tolerance.
Air pressure outside permit-
ted tolerance.Brake system, generalDescending mountain
passes
There is a danger of the
brakes fading if you use
only the rear brakes when
descending mountain passes.
Under extreme conditions, the
585zRiding

draw the attention of the au-
thorised BMW Motorrad deal-
er or specialist workshop to
the fact that the wheel is fitted
with an RDC sensor.Remove the front wheelPlace the motorcycle on
centre stand ( 83)
Remove screws1on left
and right.
Pull the front mudguard for-
ward to remove. Once the calipers have
been removed, there is
a risk of the brake pads be-
ing pressed together to the
extent that they cannot be
slipped back over the brake
disc on reassembly.
Do not operate the handbrake
lever when the brake calipers
have been removed.
Remove securing screws 2
of the left and right brake
calipers. Force the brake pads
slightly apart by rocking
brake calipers
3back
and forth Aagainst brake
discs 4.
Mask off the parts of the
wheel rim that could be
scratched in the process of
removing the brake calipers.
Carefully pull the brake cal-
ipers back and out until
clear of the brake discs.
When removing the left
brake caliper, take care not
to damage the ABS sensor
cable.
7111zMaintenance

When removing the right
brake caliper, take care not
to alter the routing of the
sensor cable of the brake-
pad wear detector.
Raise the front of the mo-
torcycle until the front wheel
can rotate freely. BMW Mo-
torrad recommends the
BMW Motorrad front wheel
stand for lifting the motor-
cycle.
Fit the front-wheel stand
( 118)
Remove right-hand axle
clamping screw5. The left axle clamping
screw locates the
threaded bush in the front
suspension. If the threaded
bush is not correctly aligned
the gap between the ABS
sensor ring and the ABS
sensor will not be correct and
this can cause the ABS to
malfunction or allow the ABS
sensor to be damaged.
In order to ensure that the
threaded bush remains cor-
rectly aligned, do not slacken
or remove the left axle camp-
ing screw.
Remove quick-release
axle 6, while supporting the
wheel.
Lower the front wheel to the
ground between the front
forks.
Take care not to damage
the ABS sensor when
rolling out the front wheel. Note the ABS sensor when
rolling out the front wheel.
Roll the front wheel forward
to remove.
Installing front wheel
ABS malfunctions on ac-
count of incorrect speed
signal.
Segmentation differs between
individual types of sensor
ring; it is very important to en-
sure that the correct sensor
ring is installed. Install only
the sensor ring that matches
the motorcycle's construction
status.
Threaded fasteners not
tightened to the spe-
cified torque can work loose
or their threads can suffer
damage.
Always have the security of
the fasteners checked by a
specialist workshop, prefer-
7112zMaintenance

ably an authorised BMW Mo-
torrad dealer.The front wheel must be
installed right way round
to rotate in the correct direc-
tion.
Note the direction-of-rotation
arrows on the tyre or the
wheel rim.
There is a risk of dam-
aging parts of the front
brake, particularly the BMW
Motorrad Integral ABS, in the
course of the procedure de-
scribed below.
Take care not to damage the
brake system, in particular the
ABS sensor with cable and
the ABS sensor ring.
Take care not to damage
the ABS sensor when
rolling in the front wheel.
Note the ABS sensor when
rolling in the front wheel. Roll the front wheel into
position between the front
forks.
Raise the front wheel, insert
quick-release axle
6and
tighten to specified torque.
Quick-release axle in
threaded bush
50 Nm
Tighten right axle clamp-
ing screw 5to the specified
tightening torque. Clamping screw for
quick-release axle in
wheel carrier
19 Nm
Remove the front wheel
stand.
Install securing screws 2on
left and right and tighten to
specified tightening torque.
Front brake caliper to
wheel carrier
30 Nm
7113zMaintenance

The cable of the ABS
sensor could chafe
through if it comes into
contact with the brake disc.
Make sure that the ABS
sensor cable is routed
correctly.
Clip the ABS sensor cable
into three retaining clips 3. Route the ABS sensor cable
between the brake caliper
and the front forks as illus-
trated here.
Remove the adhesive tape
from the wheel rim.
Install the front mudguard
and install screws
1on left
and right.
Firmly pull the handbrake
lever until the pressure point
is perceptible, and repeat
this operation several times.
Removing rear wheelPlace the motorcycle on
centre stand ( 83)
7114zMaintenance

front wheel with the BMW
Motorrad front-wheel stand.Fit the front-wheel standPlace the motorcycle on
centre stand ( 83)
Slacken adjusting screws1.
Push the two pins 2apart
until the front suspension
fits between them.
Use locating pins 3to set
the front wheel stand to the
desired height.
Centre the front wheel stand
relative to the front wheel and push it against the front
axle.
Push both mounting pins
2
through the triangles of the
brake caliper anchorages
just far enough to allow
the front wheel to be rolled
between them.
There is a risk of dam-
aging the ABS sensor
ring of the BMW Integral ABS.
Push the pin in just far
enough to ensure that it
clears the sensor ring of the
BMW Integral ABS. Tighten adjusting screws
1.
If the motorcycle is
raised too far the centre
stand will lift clear of the
ground and the motorcycle
could topple to one side.
When raising the motorcycle,
make sure that the centre
stand remains on the
ground.
Apply uniform pressure to
push the front wheel stand
down and raise the motor-
cycle.
7118zMaintenance