Bosch BULLS 650-185, Operating Instructions Manual

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149
Cleaning and servicing
7.5.1.3 Checking the rims
Rims are wear parts and wear away due to
fatigue, mechanical impacts, environmental
influences or due to braking if rim brakes are
used.

Check the rim well for wear.
 The rims of a rim brake with invisible wear
indicator are worn as soon as the wear
indicator becomes visible in the area of the rim
joint.

The rims with visible wear indicator are worn as
soon as the black, all-round groove on the pad
friction surface is no longer visible. We
recommend that you also replace the
rims with
every second
brake pad
replacement.

We recommend that you also replace the rims
at the same time as every second
brake pad
replacement.
7.5.1.4 Checking the nipple holes
Nipples cause fatigue and stress on the edge of
the nipple hole.
 Check whether there are cracks on the edge of
the nipple hole.
If there are cracks on the edge of the nipple hole,
contact your specialist dealer.
7.5.1.5 Checking the nipple well
The nipple holes can weaken the
tire
bed.

Check to see if cracks are emerging from the
nipple holes.

If there are cracks radiating from the nipple
hole, contact your specialist dealer.
7.5.1.6 Checking the rim hooks
Mechanical impacts can warp the rim hooks.
There is no longer a guarantee that a
tire
can be
fitted safely if this is the case.

Check for twisted rim hooks.
 Replace rims with twisted rim hooks. Never
repair the rim with pliers and bend the hook
back.
7.5.1.7 Checking the spokes

Press spokes slightly together with your thumb
and index finger. Check to ensure that the
tension is the same for all spokes.
 Contact your specialist dealer if the spokes are
loose or are tensioned differently.
Crash caused by a worn rim
A worn rim can break and block the wheel. This
may cause a crash with serious injuries.

Check rim wear on a regular basis.
 Take
ebike
out of service if the rim has any
cracks or warping. Contact specialist dealer.
WARNING
!