Operating instructions

Brake adjustment and maintenance
Synchronising and readjusting the brakes
To adjust the brake pads in parallel to the braking
surfaces of the rims, place a at 12 mm open-ended
wrench to the wrench surfaces directly behind the
brake arms (a).
Keep the brake xed with the tool and check with a
torque wrench and a 6-mm bit, whether the sleeve
nut with which the brake is connected to the frame is
still tightened to a torque of 2 to 3 Nm (b).
The position of the brake lever where the brake starts
to act, also referred to as pressure point (c), can be
adjusted to the size of the hand as well as to individu-
al convenience by readjusting the brake cable. Make
absolutely sure you cannot pull the brake lever all the
way to the handlebar grip. With an unapplied brake
the brake pads should not be too close to the rim
sides, otherwise they could drag along the rim during
riding.
Prior to this adjustment, read the relevant instructions
in your general bicycle user manual or the manuals of
the component manufacturers Campagnolo, SRAM
or Shimano.
With ongoing brake pad wear, the pressure point at
the brake lever moves towards the handlebars. Check
the free travel at regular intervals. It should not be
longer than a quarter of the whole travel.
For readjustment turn the knurled bolt (d) through
which the cable runs into the brake body anticlock-
wise until the lever has the desired travel.
Hold the bolt tight
(e) and screw the knurled nut
downwards until you feel resistance. This countering
with the ngers has a self-locking eect, thus xing
the adjustment.
Test the brakes subsequently in an area free of trac.
i
A decreasing braking performance can also
be caused by soiled rims and brake pads. In
such a case, clean the braking surfaces of
aluminium rims with a soft rag and benzine
or with a special rim cleaning rubber. The
braking surfaces of carbon rims should be
cleaned carefully by using a little acetone.
To remove dirt from the brake pads, use
emery paper and rub o the top layer.
A
Scraping noises during braking indicate
impurities sticking in the brake pads which
must be removed at once. Small stones as
well as very hard components of the brake
pad can scratch out aluminium particles
from the surface of an aluminium rim. The
rim wears down quickly and the braking
performance decreases. In the case of car-
bon rims the top layer can be aected.
G
Always test the brakes’ function when sta-
tionary (f) after adjusting them, making
sure the brake pads engage fully with the
rim without touching the tyre (g) when you
pull them hard. Make sure you cannot pull
the lever all the way to the handlebars (h).
G
Be sure to rst practise using the brakes
away from normal road trac to get used
to the changing braking response and to
achieve full braking performance of the
brake pads.
26 27
Brakes
a
b
c
d h
g
f
e