Bosch ZEMO SU-E FS 12 Translation Of Original Operating Instructions page 201

7.5.2.6 Checking the rim brake
Only applies to pedelecs with this equipment
Checking the brake linings
 We recommend that you also replace the rims
at the same time as every second brake lining
replacement.
1 Check whether the brake linings are worn
evenly on both sides of the rim.
Check whether the brake linings are worn to
one side.
 If the brake linings are worn unevenly or worn
to one side, contact your specialist dealer.
2 Check whether the brake lining wear limit has
been reached.
 If the brake linings have reached their wear
limit, they need to be changed. Contact
specialist dealer.
3 Check whether the brake linings can be
twisted.
 If the brake linings twist, the brake lining
bracket is defective and must be replaced.
Contact specialist dealer.
4 Check that the brake linings move steadily and
symmetrically back towards the rim when you
pull and release the handbrake.
 If the brake linings move irregularly, 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 lining 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.
MY22Z0a - 12_1.0_25.07.2022
Cleaning, servicing and inspection
Adjusting the V-brake
 Check that the braking effect initiates after one
third of the handbrake distance is reached.
 Turn the setting screw on the brake handle to
the left and right to adjust the gap between the
brake shoes and the rim uniformly to 1-1.5 mm.
 If the brake handle has no setting screw or the
gap between the brake shoes and the rim can
only be set above 1.5 mm, contact your
specialist dealer.
1
Figure 206: Turn setting screw (1) until brakes initiate
after ⅓ of the handbrake distance is reached
200