Centurion ROAD BIKE ISO 4210-2, Руководство пользователя

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69
e
f
g
h
A
Do not clamp a carbon frame or seat
post in the holding jaws of a workstand!
The components may sustain damage.
Mount a sturdy (aluminum) seat post (b) instead
and use it to clamp the frame, or choose a work
stand that holds the frame at three points inside
the frame triangle or that clamps the fork and
bottom bracket shell.
i
Protect the exposed areas of your car-
bon frame (e.g. the head tube and the
underside of the down tube) against
rubbing cables or stone chips with special pads
(c+d) your CENTURION dealer keeps for sale.
i
Carbon fiber components are particu-
larly vulnerable to damage caused by
excessive clamping force. Carbon as-
sembly paste creates extra friction between two
surfaces, allowing the necessary torque value to
be reduced by up to 30 %. This is especially use-
ful in the clamping areas of handlebars and stem,
steerer tube and stem and seat post and stem,
i.e. three areas where too much clamping force
can damage either component, causing compo-
nent failure or voiding the warranty. By reducing
the clamping force, carbon assembly paste re-
lieves stress on sensitive carbon surfaces, pre-
venting damage to fibers (e) or the cracking of
the carbon substructure.
The headset
The headset (f) connects the fork to the frame, but
allows it to move freely. It must afford virtually no re-
sistance to moving, if your CENTURION road bike is
to go straight, stabilizing itself as it runs. The shocks
caused by uneven road surfaces expose the headset
to considerable levels of stress. In this way it can be-
come loose and maladjusted.
G
Riding the bike with a loose headset
greatly increases the stress on the fork
and the bearings. This can lead to dam-
age to the fork. Risk of an accident!
Checking and readjusting
Check the headset for play by placing your fingers
around the upper head tube race (g) .
Bring your weight to bear on the saddle, pull the
front brakes with your other hand and push your
CENTURION road bike firmly back and forth with the
wheel remaining on the ground (h) . If the bearing has
play, you will feel the upper head tube race moving in
jerks relative to the lower head tube race - visible as a
small gap in between the head tube races.
To check the bearing for ease of running, lift the
frame until the front wheel is suspended in the air.
The handlebars should turn from far left to far right
without feeling roughness or tightness at any point.