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KONA OWNER’S MANUAL
KONA OWNER’S MANUAL
18
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. 16.
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. Incor-
rect 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.
a. Removing a disk brake or rim brake Front Wheel
(1) If your bike has rim brakes, disengage the brake’s
quick-release mechanism to increase the clearance
between the tire and the brake pads (See Section 4.C
g. 11 through 15).
(2) If your bike has cam action front wheel retention,
move the cam lever from the locked or CLOSED position
to the OPEN position (gs. 8a & b). If your bike has
through bolt or bolt-on front wheel retention, loosen
the fastener(s) a few turns counter-clockwise using an
appropriate wrench, lock key or the integral lever.
(3) If your front fork has a clip-on type secondary
retention device, disengage it and go to step (4). If your
front fork has an integral secondary retention device,
and a traditional cam action system (g. 8a) loosen the
tension adjusting nut enough to allow removing the wheel
from the dropouts. If your front wheel uses a cam-and-
cup system, (g. 8b) squeeze the cup and cam lever
together while removing the wheel. No rotation of any
part is necessary with the cam-and-cup system.
You may need to tap the top of the wheel with the palm
of your hand to release the wheel from the front fork.
b. Installing a disk brake or rim brake Front Wheel
CAUTION: If your bike is equipped with a front disk
brake, be careful not to damage the disk, caliper or
brake pads when re-inserting the disk into the caliper.
Never activate a disk brake’s control lever unless
the disk is correctly inserted in the caliper. See also
Section 4.C.
(1) If your bike has cam action front wheel retention,
move the cam lever so that it curves away from the
wheel (g. 8b). This is the OPEN position. If your bike has
through bolt or bolt-on front wheel retention, go to the
next step.
(2) With the steering fork facing forward, insert the wheel 17
Your bicycle may be equipped with a different securing
method for the front wheel than for the rear wheel.
Discuss the wheel securing method for your bicycle with
your dealer.
It is very important that you understand the type of
wheel securing method on your bicycle, that you know
how to secure the wheels correctly, and that you know
how to apply the correct clamping force that safely
secures the wheel. Ask your dealer to instruct you in
correct wheel removal and installation, and ask him to
give you any available manufacturer’s instructions.
WARNING: Riding with an improperly secured
wheel can allow the wheel to wobble or fall off the
bicycle, which can cause serious injury or death.
Therefore, it is essential that you:
1. Ask your dealer to help you make sure you know
how to install and remove your wheels safely.
2. Understand and apply the correct technique for
clamping your wheel in place.
3. Each time, before you ride the bike, check that the
wheel is securely clamped.
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 reten-
tion 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
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
16
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