Bosch BULLS 650-185, Operating Instructions Manual

Page: 154 / 238

153
Cleaning and servicing
7.5.2.6 Checking the rim brake
Only applies to
ebikes
with this equipment
Checking the
brake pads
 We recommend that you also replace the rims
at the same time as every second
brake pad
replacement.
1 Check whether the
brake pads
are worn
evenly on both sides of the rim.
2 Check whether the
brake pads
are worn to
one side.

If the
brake pads
are worn unevenly or worn
to one side, contact your specialist dealer.
3 Check whether the
brake pad
wear limit has
been reached.
 If the
brake pads
have reached their wear
limit, they need to be changed. Contact
specialist dealer.
4 Check whether the
brake pads
can be
twisted.

If the
brake pads
twist, the
brake pad
bracket is defective and must be replaced.
Contact specialist dealer.
5 Check that the
brake pads
move uniformly
and symmetrically towards the rim when you
pull and release the brake lever.
 If the
brake pads
move unevenly, contact
your specialist dealer.
Checking the rim braking surface for wear
The side wall is more prone to wear in rim brakes.
The wear depends on the stress loads during
rides. Dirt between the
brake pad
and rim and
strong braking forces can have an impact on the
service life.
The rim must be replaced if the wall is less than
0.9
mm thick. If deep grooves are visible, rim
hooks will warp towards the outside or the braking
power will change, contact your specialist dealer
as soon as possible.
 Replacing a rim requires considerable
mechanical expertise. Only a specialist dealer
should carry out this task.