Merida Bike Instructions d'exploitation télécharger pdf (Page 52)

Synchronizing and readjusting

Hydraulic rim brakes are synchronized together with the

alignment of the brake pads. The position of the brake

lever where the brake starts to act, also referred to as the

pressure point, can be adjusted to the size of the hand

as well as to individual convenience at the same time.

Also observe in this regard the instructions given in the

chapter “Adjusting the brake lever reach“.

As the brake pads wear down, the pressure point moves

towards the handlebar grips. Make absolutely sure you

cannot pull the brake lever all the way to the handle-

bar grip. Most brake models are, however, ﬁtted with a

bolt or a small knob at the brake lever unit to compen-

sate the wear. Observe the operating instructions of the

brake manufacturer on this MERIDA CD-ROM. If you

are in doubt or if you have any questions, contact your

MERIDA dealer.

Read the instructions of the brake manufac-

turer on this MERIDA CD-ROM carefully be-

fore removing the wheel or doing any main-

tenance work. Improper operation can lead to brake

failure.

Disc brakes

Functioning and wear

The most striking feature of disc brakes

(a-c)

is their out-

standing braking effect. They respond a lot faster in wet

conditions than rim brakes do and achieve their normal

high braking power within a very short time. They re-

quire little maintenance and do not wear down the rims

as rim brakes do. Disc brakes consist of the brake cal-

iper, the rotor, the brake lines or cables as well as the

brake lever unit

(d)

. Actuating the brake lever compress-

es the hydraulic pistons through hydraulic pressure or

mechanically, pushing the brake pads against the rotor.

The friction generated by braking causes wear to the

brake pads as well as to the rotors. Frequent rides in the

rain and dirt and over hilly terrain can accelerate wear

on both braking surfaces. Depending on the manufac-

turer and the model there are different ways of checking

the brake pads and rotors for their wear limits.

New brake pads have to be broken in until

they reach their optimal braking power. Ac-

celerate your MERIDA bike about 30 to 50

times to around 30 kmh and bring it to a halt each time.

This procedure is ﬁnished, when the force required at

the lever for braking has stopped decreasing.

Disc brakes get hot in use. For this reason do

not touch the rotors directly after stopping,

especially after a long downhill ride.

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Merida Bike Instructions d'exploitation Page 52

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