Maintenance; Wheel; Checking The Tyres; Checking The Rims - Bosch Bulls Cross Lite Evo Operating Instructions Manual

7.4

Maintenance

CAUTION
!
Crash and falling caused by unintentional
activation
There is a risk of injury if the drive system is
activated unintentionally.
 Remove the battery before maintenance.
The following maintenance measures must be
performed on a regular basis. They can be carried
out by the operator and rider. In case of any doubt,
consult the specialist dealer.
7.4.1

Wheel

WARNING
!
Crash caused by braking hard on rims
A rim can break and block the wheel if you brake
hard. This may cause a crash with serious
injuries.
 Check rim wear on a regular basis.
Notice
If the tyre pressure is too low in the tyre, the tyre
does not achieve its load bearing capacity. The
tyre is not stable and may come off the rim.
If the tyre pressure is too high, the tyre may burst.
 Check the tyre pressure as per specifications
 Adjust the tyre pressure as necessary.
 Check tyre wear.
 Check the tyre pressure.
 Check the rims 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 lining replacement.
 Check the tension of the spokes.
MY20B01-22_1.0_21.06.2019
7.4.2

Checking the tyres

 Check the tyre wear. The tyre is worn if the anti-
puncture protection or the carcass cords are
visible.
 A specialist dealer will need to change the tyre if
it is worn.
7.4.3

Checking the rims

 Check the rims for wear. The rims are worn as
soon as the black, all-round groove on the pad
friction surface becomes invisible.
 Worn rims must be replaced by a specialist
dealer.
 We recommend that you also replace the rims at
the same time as every second brake lining
replacement.
7.4.4

Check and correct tyre pressure

7.4.4.1 Dunlop valve

The tyre pressure cannot be
measured on the simple Dunlop
valve. The tyre pressure is
therefore measured in the filling
hose when pumping slowly with
the bicycle pump.
It is recommendable to use a
bicycle pump with a pressure
gauge. The operating
instructions for the bicycle pump
must be adhered to.
Unscrew and remove the valve
cap.
Connect the bicycle pump.
Pump up the tyre slowly and
pay attention to the tyre pressure
in the process.
 Correct the tyre pressure according to
specifications in the Pedelec pass.
 If the tyre pressure is too high, unfasten the union
nut, let out air and tighten the union nut again.
 Remove the bicycle pump.
 Screw the valve cap tight.
 Screw the rim nut gently against the rim with the
tips of your fingers.
Cleaning and servicing
93