Table of Contents
Advertisement
If you cannot remove the front wheel after releasing the lever, this is due
to the drop-out safety tabs. They come as metal catches which engage
with recesses in the drop-outs (a). Just release the quick-release ad-
justing nut a little and slip the wheel past the tabs.
You will find it easier to remove the rear wheel, when you pull the rear
derailleur slightly backwards (b). Lift your WHEELER bicycle off the
ground and give the wheel a gentle tap with your hand so that it drops
out.
a
G
G
A
b
A
I
c
CLInCHER AnD FoLDInG TYRES
Tyre Removal
Remove the cap and the fastening nut off the valve and deflate the
tyre completely (e). Press one tyre side from the rim sides towards the
centre of the rim. This will ease the removal.
Apply a plastic tyre lever under one bead of the tyre about 5 cm away
next to the valve and lever the tyre out of the rim in this area (f). Hold
the tyre lever tight in its position. Slip the second tyre lever between rim
d
and tyre at a distance of about 10 cm on the other side of the valve and
lever the next portion of the bead there over the edge of the rim.
68
Rotors can become hot, so let them cool down before re-
moving a wheel.
If you purchased a WHEELER bicycle with hydraulic disc
brakes, never turn your bicycle upside down for repair
work, i.e. with the handlebars and saddle underneath, as
the brakes will fail otherwise!
never pull the (disc) brake lever while a wheel is removed
and always make sure that you fit the safety locks
fore removing the wheel.
In the case of drum and roller brakes as well as of internal
gear hubs you must release the torque arm that takes up
the drive and brake forces to the frame (d). The shift cables
and the click box must also be dismounted before wheel
removal.
Comply with the instructions of the brake and gear manu-
facturers, which you can find on the enclosed CD.
After levering a part of the tyre bead over the edge of the rim you should
normally be able to slip off the whole tyre on one side by moving the tyre
lever around the whole circumference. Now you can remove the inner
tube (g). Make sure the valve does not get caught in the rim, as this can
damage the inner tube. If necessary you can remove the whole tyre by
pulling the other tyre bead off the rim. Repair the puncture according to
the instructions of the repair kit manufacturer or replace the inner tube.
When you have removed the tyre you should also check the rim tape
(h). 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 plastic. If you are in doubt or if you have any questions,
then contact your WHEELER bicycle dealer.
G
If the fabric of the tyre is destroyed by the perforating ob-
(c)
be-
ject, replace the tyre to be on the safe side.
G
Replace spoilt rim tapes immediately.
I
Keep in mind when buying replacement tubes that Schrader
valves do not fit in every rim!
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 tyre and check it, as well. often you will find a for-
eign body sticking in the tyre, which ought to be removed.
otherwise another puncture can occur.
Tyre Mounting
When mounting a tyre make sure that no foreign matter such as dirt
or sand gets inside the tyre and that 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 circumfer-
ence. This should normally be possible without using tools.
e
f
f
g
h
69
Advertisement
Table of Contents
