Adjustable Stems; Stems For Threadless Systems, The Aheadset - wheeler city/trekking Operating Instructions Manual

ADjUSTABLE STEMS

There are various solutions for adjusting the tilt of the front part of
adjustable stems (a):
Some designs use bolts on the sides of the joint (b), others have bolts
coming from above or below (c), and other again are equipped with
additional locking mechanisms or adjusting bolts.
a
Before adjusting read the enclosed operating instructions of the stem
manufacturer. Ask your WHEELER bicycle dealer to explain to you both
the function and adjustment of your stem or else let him do that work.
G
b
a
STEMS FoR THREADLESS SYSTEMS,
THE AHEADSET
(Aheadset
c
In the case of bicycles with Aheadset
to adjust the bearing preload. If you change the position of the stem you
have to readjust the bearing play (see the chapter "headset").
The vertical setting range is determined by the intermediate rings, also
referred to as spacers (d). In the case of flip-flop stem models the stem
can be mounted the other way round to achieve a different handlebar
height.
d
34
note that the bolted connections of adjustable stems and
handlebars have to be tightened to the specified torques.
otherwise the handlebars or stem may come loose or
break. Use a torque wrench and observe the minimum and
maximum torque values! You can find these in the chapter
"recommended torque Settings for components", on the
components themselves and/or in the instructions from the
parts manufacturers, which you can find on the enclosed
CD.
Keep in mind that readjusting the position of the stem
changes the position of the handlebars, brake and shift le-
vers. Readjust these components, as described in chapter
"adjusting the tilt of the handlebars, bar ends and brake
levers".
SYSTEM
®
® is a registered trade mark of Dia-Compe)
headsets the stem also serves
®
Unscrew the preload bolt at the top of the fork steerer tube, remove the
cap and release the bolts on either side of the stem by up to three turns
(e). Remove the stem and spacers from the fork steerer tube. In doing
so keep hold of both frame and fork to prevent the fork from slipping
off the head tube.
You can determine the handlebar height by the arrangement of stem and
spacers. Slip the remaining spacers onto the fork steerer tube above
the stem. Adjust the headset, as described in the chapter "headset".
If you want to turn the stem around, you have to also release the bolts
of the faceplate securing the handlebars (f). If the stem is fitted with
a cap, you can simply take out the handlebars at this point. If it is not
fitted with a cap, you have to remove the handlebar fittings.
Mount the handlebars and, if necessary, the handlebar fittings, as de-
scribed in the chapter "adjusting the tilt of the handlebars, bar
ends and brake levers" and/or in the operating instructions of the
parts manufacturers, which you can find on the enclosed CD.
Check whether the handlebars are firmly seated in the stem by trying to
rotate the handlebars downwards. Verify whether the handlebar/stem
unit can be twisted relative to the fork. Do this by taking the front wheel
between your knees and trying to twist the handlebars (g). If there is
movement, carefully tighten the bolts a little more and check again the
proper fit.
Tighten carefully by approaching the prescribed maximum torque in
small steps (0.5 Nm increments) and check in between the proper fit of
the component (h). Never exceed the maximum torque value indicated
by the manufacturer!
G
These routines require a certain amount of manual skill and
(special) tools and are best left to your WHEELER bicycle
dealer. If you still wish to do this by yourself, carefully read
through beforehand the instructions of the stem manufac-
turer, which you can find on the enclosed CD.
e
f f
g
h
35