Operating instructions

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When mounting a tyre on a rim that has
already been used, it may be necessary to
remove glue residues and dirt with a steel
brush or with emery cloth (a). When you are
done, wipe the rim with a soft rag and ace-
tone or benzine.
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There is special tubular tyre cement (e.g.
from Continental) for carbon rims. Before
using this type of glue, read the operating
instructions.
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Observe the video showing the secure glu-
ing of Continental tubular tyres on carbon
rims at www.conti-online.com
Clincher and folding tyres
Tyre removal
Remove the cap and the fastening nut o the valve
and deate the tyre completely. Press one tyre side
from the rim sides towards the centre of the rim. This
will ease the removal.
Apply a plastic tyre lever to one bead of the tyre about
5 cm beside the valve (b) and lever the tyre out of the
rim in this area. Hold the tyre lever tight in its position.
Slip the second tyre lever between rim and tyre at a
distance of about ten centimetres on the other side
of the valve and lever the next portion of the bead
over the edge of the rim (c).
After levering a part of the tyre bead over the edge
of the rim you should normally be able to slip o
the whole tyre on one side by moving the tyre le-
ver around the whole circumference. Now you can
remove the inner tube (d). Make sure the valve does
not get caught in the rim, as this can damage the in-
ner tube. If necessary you can remove the whole tyre
by pulling the other tyre bead o the rim. Repair the
puncture according to the instructions of the repair
kit manufacturer or replace the inner tube by a new
one.
When you have removed the tyre, you should also
check the rim tape
(e). It should lie squarely in the
rim trough, covering all spoke nipples, and should
neither be damaged nor brittle. In the case of double
wall rims the tape must cover the entire rim base, but
it should not be so broad as to stand up along the
inside edges of the rim trough. Rim tapes for this type
of rim should only be made of fabric or durable plas-
tic. If you are in doubt or if you have any questions,
contact your AX-Lightness and engage dealer.
G
If the fabric of the tyre is destroyed by the
perforating object, replace the tyre to be on
the safe side.
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Replace spoilt rim tapes immediately.
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If you get a puncture en route, inate the
inner tube and bring it close to your ear. In
most cases you can hear the air coming out.
At home you can help yourself with a buck-
et of water where you can locate the hole
by the bubbles. When you have found the
hole, look for the corresponding place on
the tyre and check it. Remove the foreign
body, otherwise another puncture can oc-
cur.
Tyre mounting
When mounting a tyre make sure no foreign matter,
such as dirt or sand, gets inside the tyre and you do
not damage the inner tube in the process.
Slip one bead of the tyre onto the rim. Using your
thumbs, press one bead over the edge of the rim and
then around the entire circumference. This should
normally be possible without using tools.
Stick the valve of the inner tube through the hole in
the rim (f).
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If you have wheels with deep rims,
you need to screw on a valve ex-
tension (g+h).
54 55
Rims - Wheels
f
ea
b
c
d
g
h