Operating instructions

Inate the inner tube slightly (a) so that it becomes
round and push it into the tyre all the way round.
Make sure not to leave any folds in the inner tube.
To nish mounting the tyre, start at the opposite side
of the valve. Use your thumbs to press the other tyre
bead over the rim ange as far as you can.
Make sure the inner tube does not get pinched and
squashed between the tyre and the rim. You can pre-
vent this by pushing the inner tube into the hollow of
the tyre (b) with a nger as you work along.
Work the tyre into the rim by approaching the valve
symmetrically from both sides. Towards the end, you
will have to pull the tyre vigorously downwards (c) to
make the already mounted portion of the tyre slip to-
wards the deepest part of the rim well. This will ease
the job noticeably on the last centimetres.
Before tting the tyre completely on the rim check
again whether the inner tube lies properly inside the
tyre and press the last stretch of tyre over the edge of
the rim using the balls of your thumbs.
If this does not work, you will have to use the tyre le-
vers (d). Make sure the bent ends point towards the
inner tube and the inner tube does not get damaged.
Push the valve a little into the tyre so that the inner
tube does not get caught between the rim and the
tyre beads. Check whether the valve stands upright.
If not, dismount one bead again and reposition the
inner tube.
To make sure the inner tube does not get pinched
between the rim and the bead, move it sideways
back and forth between the sides of the rim. While
doing so, also check whether the rim tape has shifted.
Inate the inner tube to the desired pressure. The
maximum pressure is indicated on the side of the tyre
(e).
Check whether the tyre is properly seated by inspect-
ing the ne witness line just above the rim edge. This
line should be even to the rim all around the tyre (f).
Starting from the maximum tyre pressure you can
now reduce the pressure through the valve to suit
your needs. Please observe the recommended tyre
pressure range.
Truing up wheels
Although AX-Lightness and engage wheels are deliv-
ered accurately trued, it is a matter of fact that the
spokes will “bed in” to the hub and rim on the rst
kilometres. As a result thereof the spokes lose a little
tension. Furthermore, a loosening of the spokes on
their own, can lead to a lateral or vertical runout of
the wheel. For this reason make sure the wheel set is
checked and true up, if necessary, after you have run
it in, at the latest however after about 100 kilometres
to 300 kilometres (60 to 180 miles).
Truing up wheels is a job best left to your AX-Lightness
and engage dealer. Inappropriately tightened spokes
can cause irreparable damage.
If you feel up to doing it after all, be sure to observe
the following instructions during truing up:
» The spoke nipples of AX-Lightness and engage
wheels are sunk in the rim. That means these can
only be retightened from outside, i.e. from the side
of the tyre. The tyre must therefore be removed. In
addition, you need special tools (g).
Keep in mind that tubular tyres need to be re-
glued subsequently.
» The spokes of AX-Lightness and engage wheels are
highly weight-optimised. Make sure not to distort
the spokes when tightening the spoke nipples.
Keep the spokes in position by using special tools
(h).
Overtighten the nipple by a quarter of a turn and
turn it back afterwards; the spokes will then remain
free from harmful tensions.
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Rims - Wheels
a
b
c
d
e
h
g
f