33
g
f
h
e
Conventional stems
Handlebars with conventional stems allow limited
vertical adjustment. This is done by moving the stem
up or down inside the fork steerer tube.
Release the expander bolt by two to three complete
turns. The stem should now turn freely inside the
fork. If it does not, release the bolt by tapping it gen-
tly with a rubber hammer
(e)
. With Allen bolts you
need to stick the Allen key into its head first, as it is
normally countersunk and therefore impossible to be
hit directly.
Now you can move the handlebar/stem unit up and
down as a whole. Be sure not to pull out the stem
too far. The mark on the stem (end, min, max, stop,
limit or the like) should always remain within the tube
(f)
. Setting the stem to a lower position can only add
to your safety!
Realign the handlebars with the front wheel
(g)
.
Retighten the expander bolt with a torque wrench.
Tighten carefully by approaching the prescribed
maximum torque value in small steps (0.5 Nm incre-
ments) and check the proper fit of the component in
between. Never exceed the maximum torque value
indicated by the manufacturer! You will find the pre-
scribed values in the chapter “Recommended torque
settings”, directly on the components and/or in the
operating instructions of the component manufactur-
ers on this CENTURION CD-ROM.
Check the seat of the stem by taking the front wheel
between your legs and trying to turn the handle-
bars and stem relative to the wheel
(h)
. If there is
movement, you have to increase the torque value. If
the handlebars are still too high or too low, you can
replace the stem. This can be quite a big job, as it
may mean taking off and remounting all the fittings
on the handlebars. Ask your CENTURION dealer for
advice about the different types of stems.
G
Never ride a CENTURION bike with a
stem that has been drawn out beyond
the mark for the maximum permissible
height! Check all bolted connections and test
your brakes before you set off in an area free of
traffic!
a
Never try to unscrew the top race of the
headset when you only want to adjust
the stem, as you will otherwise alter the
bearing play!
To Next Page
Loading...
