62
a
b
c
d
i
If you get a puncture en route, inflate
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 bucket of water where you can locate the hole
by the bubbles. When you have found the hole,
look for the corresponding place on the tire and
check it, as well. Often you will find the foreign
body sticking in the tire. Otherwise another punc-
ture can occur.
Mounting tires
When mounting a tire make sure that no foreign mat-
ter such as dirt or sand gets inside the tire and that
you do not damage the inner tube in the process.
Slip one bead of the tire 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
(a)
. Inflate the inner tube slightly so that it
becomes round and push it into the tire all the way
round. Make sure not to leave any folds in the inner
tube.
To finish mounting the tire, start at the opposite side
of the valve. Using your thumbs, press as much of
the second bead of the tire over the edge of the rim
as you can
(b)
.
Make sure the inner tube does not get pinched and
squashed between the tire and the rim. You can pre-
vent this by pushing the inner tube into the hollow of
the tire
(c)
with a finger as you work along.
Work the tire into the rim by approaching the valve
symmetrically from both sides. Towards the end, you
will have to pull the tire vigorously downwards
(d)
to
make the already mounted portion of the tire slip to-
wards the deepest part of the rim well. This will ease
the job noticeably on the last centimeters.
Before fitting the tire completely on the rim check
again whether the inner tube lies properly inside the
tire and press the last stretch of tire over the edge of
the rim using the balls of your thumbs.
If this does not work, you will have to use the tire le-
vers
(e)
. Make sure that the bent ends point towards
the inner tube and that the inner tube does not get
damaged.
Push the valve subsequently a little into the tire so
that the inner tube does not get caught between
the rim and the tire 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 tire beads move it sideways
back and forth between the sides of the rim. While
doing so, also check whether the rim tape has shifted.
Содержание ROAD BIKE ISO 4210-2
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