Bedienungsanleitung Kona 2016 (Seite 9 von 23) (Englisch)

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KONA OWNER’S MANUAL

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

Kona 2016 Seite 9

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