Bedienungsanleitung GT Bicycles 2015 (Seite 8 von 108) (Englisch)

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PART I

1.C - MECHANICAL

SAFETY CHECK

Routinely check the condition of your bicycle before

every ride.

Nuts, Bolts Screws & Other

Fasteners

Because manufacturers use a wide variety of fastener

sizes and shapes made in a variety of materials,

often diering by model and component, the correct

tightening force or torque cannot be generalized.

To make sure that the many fasteners on your bicycle

are correctly tightened. See page 78.

Always refer to the torque specications in the

instructions provided by the manufacturer of a

component in question.

Correctly tightening a fastener requires a calibrated

torque wrench. A professional bicycle mechanic

with a torque wrench should torque the fasteners

on you bicycle. If you choose to work on your own

bicycle, you must use a torque wrench and the correct

tightening torque specications from the bicycle or

component manufacturer or from your dealer. If you

need to make an adjustment at home or in the eld,

we urge you to exercise care, and to have the fasteners

you worked on checked by your dealer as soon as

possible.

Note that there are some components which require

special tools and knowledge. In Sections 3 and 4,

we discuss the items which you may be able to adjust

yourself. All other adjustments and repairs should be

done by a qualied bike mechanic.

WARNING

CORRECT TIGHTENING FORCE ON

FASTENERS –NUTS, BOLTS, SCREWS–

ON YOUR BICYCLE IS IMPORTANT.

Too little force, and the fastener may not hold

securely. Too much force, and the fastener can

strip threads, stretch, deform or break. Either

way, incorrect tightening force can result in

component failure, which can cause you to loose

control and fall.

Make sure nothing is loose. Lift the front wheel o the

ground by two or three inches, then let it bounce on

the ground. Anything sound, feel or look loose? Do

a visual and tactile inspection of the whole bike. Any

loose parts or accessories? If so, secure them. If you’re

not sure, ask someone with experience to check.

Tires & Wheels

Make sure tires are correctly inated (see SECTION

4.G.1). Check by putting one hand on the saddle, one

on the intersection of the handlebars and stem, then

bouncing your weight on the bike while looking at tire

deection. Compare what you see with how it looks

when you know the tires are correctly inated; and

adjust if necessary.

Tires in good shape? Spin each wheel slowly and look

for cuts in the tread and sidewall. Replace damaged

tires before riding the bike.

Wheels true? Spin each wheel and check for brake

clearance and side-to-side wobble. If a wheel wobbles

side-to-side even slightly, or rubs against or hits the

brake pads, take the bike to a qualied bike shop to

have the wheel trued.

CAUTION

Wheels must be true for the brakes to work

eectively. Wheel trueing is a skill which requires

special tools and experience. Do not attempt

to true a wheel unless you have the knowledge,

experience and tools needed to do the job

correctly.

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