Operation Manual

19
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 loose control and fall,
resulting in serious injury or death.
2. Wheels with cam action systems
There are currently two types of over-center cam wheel retention
mechanisms: the traditional over-center cam (g. 8a) and the cam-and-cup
system (g. 8b). 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(g.8a)
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rstWARNINGinthisSection,p.18.
b.Adjustingthecam-and-cupmechanism(g.8b)
The cam-and-cup system on your front wheel will have been correctly adjusted
for your bicycle 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.
CAUTION: If your bike has a disc brake, exercise care in touching the
rotor or caliper. Disc rotors have sharp edges, and both rotor and caliper
can get very hot during use.