60
23.3 Hub brakes
As the calipers are located in the hub, hub
brakes hardly require any servicing.
23.3.1 Roller brakes
The braking force of roller brakes is applied
via a cable pull from the brake lever to the
brakes. Longer periods of braking strongly
heat roller brakes. Constant braking can
reduce the braking performance, with the
brakes possibly completely failing. You should
therefore adjust your riding style accordingly.
• Check that the screws on the brake lever
are secure at regular intervals.
• By turning the screws clockwise, you can
tighten these. Please adhere to the cor-
rect torque (see chapter 33.3 “Torques for
screwed connections”).
• Check the performance of the brakes by
pushing the pedelec forwards and applying
the front and rear brake levers in succes-
sion, just as you would during strong pe-
riods of braking. If the brakes are working
correctly, the front brake should brake so
effectively that the rear wheel lifts off the
ground. The braking force on the rear wheel
should be so strong that the wheel locks.
• Oil the pull cable at regular intervals.
• Have the brake oiled with Shimano roller
brake grease from Shimano at regular
intervals.
Brakes, brake levers and braking systems
Hub brakes are strongly heated
by long periods of braking. Con-
stant braking can reduce the
braking performance, with the brakes
possibly completely failing. You should
therefore adjust your riding style ac-
cordingly.
Do not brake constantly on long
downhill sections, otherwise
the brakes can become very
hot, which can reduce their effective-
ness. Alternate between applying the
front and back brake on long and steep
downhill sections to allow the other
brake to cool. Do not touch the brakes
for at least 30 minutes after riding as
they can become very hot.
The brake lever has to be
specially adjusted for roller
brakes.
Brake pads are subject to wear
due to their constant use. Have
the brake pads in all braking
systems checked and if required re-
placed by a specialist retailer at regular
intervals.
After the bike has stood for a peri-
od of time, a rust film can form on the
brakes, which increases the braking
effect. When beginning your ride, you
should brake lightly multiple times to
remove the rust film. This avoids the
brakes suddenly blocking.
Source: Shimano
®
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