Ax-lightness engage Operations Instructions download pdf (Page 14)

Operation and wear

Actuating the levers on the handlebars

(

)

and the

cables

causes a brake pad to be pressed against a

braking surface (b+c), and the ensuing friction slows

down the wheel. If water, dirt or oil comes into con-

tact with one of the braking surfaces, this changes

the coecient of friction and deceleration is reduced.

This is why brakes respond with a slight delay and less

powerfully in wet weather.

In order to maintain their eectiveness, the AX-Light-

ness and engage brakes need to be checked and re-

adjusted regularly.

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. Some rims are provided

with wear indicators, e.g. grooves or circular indenta-

tions. Once these are visible (e.g. yellow marks on the

braking surfaces), the rim must be replaced. When

the abrasion of the rim has reached a certain critical

point, the rim may break under the tyre pressure. This

can make the wheel jam or the inner tube burst, both

of which can cause an accident! Risk of accident!

Functional check

Check whether the brake pads are accurately aligned

with the rims (d) and still suciently thick. You can

judge the wear of the brake pads by the appearance

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

of the grooves, it is time to replace them (e). Be sure

to observe the appropriate instructions of the respec-

tive manufacturer.

See your AX-Lightness or engage dealer and ask them

to examine the remaining thickness of the rims when

you have worn through your second set of brake

pads with an aluminium rim at the latest. Your bicycle

dealer has special measuring devices for determining

the remaining thickness of the rims.

Both brake arms must hit the rim simultaneously,

when you actuate the brake lever. They must keep o

the tyre.

The brake lever must always remain clear of the han-

dlebars. You should not even be able to pull it all the

way to the handlebars

(f) in the event of an emergen-

cy braking. If this is the case, however, observe the

following chapter “Synchronising and readjust-

ing the brakes”.

A correctly adjusted AX-Lightness and engage brake

must have passed all these checks.

Brake cables that are damaged (g), e.g.

frayed, should be replaced immediately, as

they can otherwise fail at a critical moment,

possibly causing an accident.

Adjusting the position of the brake pads

relative to the rims requires a considera-

ble degree of skill. Replacing and adjust-

ing the brake pads is a job best left to your

AX-Lightness and engage dealer.

Have your rims regularly inspected and

measured by your AX-Lightness and en-

gage dealer (h).

24 25

Brakes

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Ax-lightness engage Operations Instructions Page 14

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