Bedienungsanleitung Winora Algemene (Seite 38 von 140) (Englisch)

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 

The friction generated by braking causes wear to the brake pads as well

as to the rims. Frequent rides in the rain and dirt and over hilly terrain can

accelerate wear on both braking surfaces.

Rims are provided with wear indicators, i.e. grooves or circular indenta-

tions. If the rim is worn down to the point where the grooves or indentations

are no longer visible, they need to be replaced. Once the abrasion of the rim

has reached a certain critical point, the rim may break under the tyre pres-

sure. This can make the wheel jam or the inner tube burst, both of which

can cause an accident!

The grooves in the brake pads are worn down by braking. See your bicycle

dealer and ask them to examine the remaining thickness of the rims when

you have worn through your second set of brake pads at the latest. Your

bicycle dealer has a special measuring device for determining the remaining

thickness of the rims.

Wet weather reduces your braking power. Be aware of longer

stopping distances when riding in the rain!

When replacing any parts be sure to only use parts that bear

the appropriate mark and, to be on the safe side, original spare

parts. Your bicycle dealer will be pleased to help you!

Ensure that the brake pads are absolutely free of wax, grease

and oil.

Have your rims regularly inspected and measured by a bicycle

dealer .

Brake cables that are damaged , e.g. frayed, should be re-

placed immediately, as they can otherwise fail in a critical mo-

ment, possibly causing a crash.

 

Common V-brake designs have two brake arms mounted separately on ei-

ther side of the rim. When actuating the brake lever, both arms are tightened

by the cable, the pads touch the rim.



Check whether the brake pads are accurately aligned with the rims and

still sufficiently thick. You can judge the wear of the brake pads by the ap-

pearance of the grooves. If the pads are worn down to the bottom of the

grooves, it is time to replace them.

The brake pads must hit the rim simultaneously, first touching it with the front

portion of their surface. At the moment of first contact the rear portion of the

pads should be a millimetre away from the rim. Viewed from the top the brake

pads form a “V“ with the trough pointing to the front. This V-shaped

setting prevents the brakes from screeching when applied.

The brake lever must always remain clear of the handlebars. You should not

even be able to pull them all the way to the handlebars in the event of an

emergency stop.

Only a successful passing of all these points will ensure a correctly adjusted

brake.

Adjusting the position of the brake pads relative to the rims re-

quires a considerable degree of skill. Replacing and adjusting

the brake pads is a job best left to your bicycle dealer.



Some V-brakes of city and trekking bicycles are fitted with a power modula-

tor that acts as brake force control during braking hereby limiting the brake

force.

This device is intended to prevent overbraking and a blocking of the front

wheel.

An inappropriately adjusted power modulator may result in se-

vere accidents. Ask your bicycle dealer about the system your

bicycle is fitted with.



Almost all brake designs have a bolt located next to one or both brake cal-

lipers for adjusting the initial spring tension . Adjust this bolt carefully until

the distance between brake pads and rim is the same on either side.

To adjust the brakes, unscrew the knurled lock ring located at the point

where the brake cable enters the brake lever on the handlebars .

Unscrew the knurled, slotted adjusting bolt by a few turns. This reduces the

free travel of the brake lever.

Keeping the adjusting bolt firm, tighten the lock ring against the brake lever

mount. This prevents the adjusting bolt from coming loose by itself.

Ensure that the slot of the bolt faces neither forward nor upward, as this

would permit water or dirt to enter.

Always test the brakes’ function when stationary after adjusting

them, making sure the brake pads fully engage with the rim

when you pull them hard.

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