MY23I0a - 42_1.0_29.08.2023
218
Troubleshooting, fault clearance and repair
9.2.9
Correcting freewheel faults
Symptom
Cause
Remedy
Freewheel blocked.
Cover forgotten after fitting.
Contact specialist dealer. Check installation correct.
After fitting, socket was compressed by
over-tightening the quick-release axle.
Contact specialist dealer. Measure the length of the socket. If
the socket is shorter than 15.4 mm, replace socket.
Freewheel does not lock
into place or slips.
After maintenance: Too much or wrong
grease on the toothed discs.
Contact specialist dealer. Remove hub. Clean and grease
toothed disc.
Toothed discs are worn.
Contact specialist dealer. Replace toothed disc.
One or both springs were forgotten
after fitting.
Contact specialist dealer. Check installation correct.
One or both toothed discs are fitted the
wrong way round after assembly.
Contact specialist dealer. Check installation correct.
Hub has axial clearance.
Ball bearings are worn.
Contact specialist dealer. Replace ball bearings.
One or both toothed discs are fitted the
wrong way round after assembly.
Contact specialist dealer. Check installation correct.
Hub is stiff when turned.
Ball bearings are worn.
Contact specialist dealer. Replace ball bearings.
Ball bearings have been driven in too
firmly after assembly
Contact specialist dealer. Check installation correct.
Installation sequence for ball bearings
not observed.
Contact specialist dealer. Check installation correct.
Hub makes noise.
Ball bearings are worn.
Contact specialist dealer. Replace ball bearings.
Cassette caused notches
on the freewheel body.
Steel cassette works its way into the
aluminium bar on the freewheel body.
Contact specialist dealer. Remove notches on the cassette
surface with a file.
Freewheel body is stiff
when turned.
Ball bearings in the freewheel body are
worn.
Contact specialist dealer. Replace freewheel body.
Freewheel is too loud or
too quiet.
Perception of freewheel noise is
subjective. While some pedelec riders
prefer loud freewheel noise, others like
a quite freewheel more.
This is not a malfunction. The amount of grease between the
toothed discs may have an effect on the freewheel noise. Less
grease increases freewheel noise but also causes greater
wear.
Table 52: Error solution for freewheel
Summary of Contents for E5 ZR F
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