Hydraulic Disc Brakes; Functional Check; Wear And Maintenance; Mechanical Disc Brakes - wheeler city/trekking Operating Instructions Manual

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Hydraulic Disc Brakes

Functional Check

Regularly check the lines and connections for leaks
on the lever. Contact your bicycle dealer immediately in the event of
a brake liquid leakage. A leak in the brake lines can render the brake
ineffective. risk of accidents!

Wear and Maintenance

a
Check the pads for wear at regular intervals
operating instructions of the respective manufacturer.
G
G
b
A
I
c
d
50
(a)
while pulling
(b+c)
by following the
Loose connections or leaky brake lines drastically impair
the braking power. If you find leaks in the brake system or
kinked lines, contact your WHEELER bicycle dealer immedi-
ately!
If your brake system works with DoT brake fluid, the latter
needs to be replaced regularly according to the intervals
prescribed by the manufacturer.
Do not open the brake lines. There is a risk of brake fluid
leakage which is harmful to health and the coating.
The manufacturers of hydraulic disc brakes
(d)
provide detailed instructions, and these are on the enclosed
CD. Be sure to read them carefully before removing a wheel
or doing any maintenance work.

Mechanical Disc Brakes

Functional Check
The more the brake pads of mechanical disc brakes
longer is the brake lever travel. Regularly check whether you get a posi-
tive braking response before the lever touches the handlebars. Make
sure the brake cables
(f)
are in sound condition!
G
Damaged cables must be replaced immediately, as they
could snap. risk of accidents!
Wear and Maintenance
To a certain extent, the wear of the brake pads can be compensated
for directly at the brake lever. Unscrew the knurled lock nut on the bolt
through which the cable enters the grip and then unscrew the bolt until
the lever has the desired travel (g). Retighten the lock nut by taking
care that the slit of the bolt head does not face upward or forward, as
this would permit an unnecessarily high amount of water or dirt to enter.
Now check the functioning of the brake and make sure the brake pads
do not drag on the rotor when you release the brake lever and let the
wheel spin.
Repeated readjustment at the brake lever makes the arm on the brake
normally
calliper change its position. This can reduce braking power and result
in a complete brake failure in an extreme case. risk of accidents!
Some models offer further ways of adjusting the brakes directly at the
brake calliper, though this requires a certain amount of skill. In all cases
it is essential to read the original operating instructions of the brake
manufacturer, which you can find on the enclosed CD, before adjusting
the brake. If you are in doubt or if you have any questions, then contact
your WHEELER bicycle dealer.
G
Repeated readjustment at the brake lever
cally reduce the maximum braking performance.
I
The manufacturers of mechanical disc brakes normally pro-
vide detailed instructions, and these are on the enclosed
CD. Be sure to read them carefully before removing a wheel
or doing any maintenance work.
(e)
wear down, the
(h)
can drasti-
e
f
f
g
h
51

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