Giant momentum Anleitung Seite 18

Understand and apply the correct technique for clamping your wheel in place.
2. Each time, before you ride the bike, check that the wheel is securely clamped.
3. The clamping action of a correctly secured wheel must emboss the surfaces of the dropouts.
1. Front Wheel Secondary Retention Devices
Most bicycles have front forks which utilize a secondary wheel retention device to reduce the risk of the
wheel disengaging from the fork if the wheel is incorrectly secured. Secondary retention devices are not a
substitute for correctly securing your front wheel.
Secondary retention devices fall into two basic categories:
a. The clip-on type is a part which the manufacturer adds to the front wheel hub or front fork.
b. The integral type is molded, cast or machined into the outer faces of the front fork dropouts.
Ask your dealer to explain the particular secondary retention device on your bike.
WARNING: Do not remove or disable the secondary retention device. As its name implies, it serves as
a back-up for a critical adjustment. If the wheel is not secured correctly, the secondary retention device
can reduce the risk of the wheel disengaging from the fork. Removing or disabling the secondary
retention device may also void the warranty.
Secondary retention devices are not a substitute for correctly securing your wheel. Failure to properly
secure the wheel can cause the wheel to wobble or disengage, which could cause you to lose control
and fall, resulting in serious injury or death.
2. Wheels with cam action systems (Quick Release)
There are currently two types of over-center cam wheel retention mechanisms: the traditional over-center
cam (fig. 8) and the cam-and-cup system. Both use an over-center cam action to clamp the bike's wheel in place.
Your bicycle may have a cam-and-cup front wheel retention system and a traditional rear wheel cam action
system.
a. Adjusting the traditional cam action mechanism (Quick release mechanism) (fig. 8)
The wheel hub is clamped in place by the force of the over-center cam pushing against one dropout and
pulling the tension adjusting nut, by way of the skewer, against the other dropout. The amount of clamping force
is controlled by the tension adjusting nut. Turning the tension adjusting nut clockwise while keeping the cam
lever from rotating increases clamping force; turning it counterclockwise while keeping the cam lever from
rotating reduces clamping force. Less than half a turn of the tension adjusting nut can make the difference
between safe clamping force and unsafe clamping force.
WARNING: The full force of the cam action is needed to clamp the wheel securely. Holding the nut
with one hand and turning the lever like a wing nut with the other hand until everything is as tight as you
can get it will not clamp a cam action wheel safely in the dropouts. See also the first WARNING in this
Section, p. 15.
b. Adjusting the cam-and-cup mechanism
If your bicycle is equipped with a cam-and-cup mechanism, it will have been properly adjusted by your dealer.
Ask your dealer to check the adjustment every six months. Do not use a cam-and-cup front wheel on any
bicycle other than the one for which your dealer adjusted it.
3. Removing and Installing wheels
WARNING: If your bike is equipped with a hub brake such as a rear coaster brake, front or rear drum,
band or roller brake; or if it has an internal gear rear hub, do not attempt to remove the wheel. The
removal and re-installation of most hub brakes and internal gear hubs requires special knowledge.
Incorrect removal or assembly can result in brake or gear failure, which can cause you to lose control
and fall.
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