Leitner Berlin 2020, User Manual

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calliper mounting bolt (15 Nm)
Outer brake cable housing
Adjustment barrel
Centering bolt (12 Nm)
Centering bolt (12 Nm)
Actuating arm
Cable anchor bolt (7 Nm)
Inner brake cable
Disc (Rotor)
calliper mounting bolt (15 NM)
Disc mounting bolt (8 Nm)
Figure DB1: Disc Brake Assembly: View from left side
Fork
Inner brake pad adjustment bolt.
Figure DB2 : Disc Brake Assembly: View from
right side
Figure DB3 Disc Brake Assembly:
Magnified view from back
Outer
brake
pad
Inner
brake
pad
Disc
DISC BRAKES
General information about brakes: The brake system allows you to decrease speed or your bicycle. This operation is very
important to your safety. Only use original brake pads. WARNING! Brakes needs to be adjusted correctly to avoid injury!
Adjusting Disc Brake Clearance:
•
The pads need to be adjusted to be as close to the disc as
possible without rubbing much. Slight rubbing is normal initially
and will get better after the break‐in phase. To check if the
brakes are rubbing lift the wheel, spin it and listen for rubbing
sound. Brake pads can be moved very close to the disc for best
performance. This may cause slight rubbing which is normal. If
there is a lot of rubbing and the wheel is slowed down without
braking, increase the brake pad distance.
•
If you position yourself towards the back of the brake pads and
look very carefully against a bright background, you will see the
brake pads as in figure DB3. If you engage the brake lever, you
will see the outer brake pad moving towards the disc. Visual
inspection will make it easier to position the brake pads while
adjusting.
Disc Brakes: Braking in period:
•
Please note that brand new disc brakes
need “braking in”. This means it may take
a few weeks until they perform optimally.
Ride your bike very carefully and allow
plenty of time for braking.
•
Please find below a guide on how to
adjust the disc‐brakes. You may have to
re‐adjust them several times during the
brake‐in period. Brakes need to be re‐
adjusted regularly, also after the brake‐in
period. This is normal as brake pads will
wear down. Before each ride, make sure
that both front and rear brakes work well
and follow the guide below to maintain
the brakes.
How disc brakes work: Disc brake pads apply pressure to a disc
mounted to the hub of the wheel (Figure DB1). The pressure is
controlled with a hand lever on your handle‐bar that is connected
to the brake by a cable (inner brake cable). Do not press brake
lever when wheel is not installed.
Inspection: Every 30 days inspect all bolts for correct tightness
and pads for thickness. Replace if disc brake pads are thinner than
1mm. Pushing the brake lever will push the outer pad against the
disk and the inner pad. The friction will cause the bike to slow
down. (Figure DB3).
1) Before adjusting the brakes, push and release the brake lever on your
handle‐bar 10 times. This tightens the brake cable. It may loosen up again in
time and you may have to repeat this step.
2) Adjust OUTER brake pad
(Figure DB1) : Turn adjustment barrel all the
way clock‐wise. Loosen cable anchor bolt. Adjust inner brake cable tension
until outer pad is as close as possible to disc without touching disc. Tighten
Cable anchor bolt. Turn adjustment barrel to fine‐tune.
3) Adjust INNER brake pad
(Figure DB2): Turn Inner brake pad adjustment
bolt: Turn clockwise: reduce distance of brake pad to disc. Turn anti‐
clockwise: increase distance of brake pad to disc.
Aligning brake with disc (Figure DB1): Loosen centering bolts, align brake
pads to disc by visual inspection (Figure DB3) or slide a thin object like a
business card between outer brake pad and the disc. Pull handlebar lever
fully and tighten Centering bolts to 12 Nm.
Changing Brake pads: Remove wheel or remove brake calliper by loosening
Calliper centering bolts. Remove pads and replace with new brake pads. Re‐
install wheel or tighten Calliper centering bolts in correct position.
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© Leitner Pty Ltd 2019