Filter
Top Products
Maintenance and care
39
HP
Velotechnik
Changing the tubes
In order to exchange single parts in the upper
chain tubes cut the old tube at the retention
spring at the chain roller and pull the remai-
ning part off the spring. Now move the
smooth part of the new tube through the
spring and expand the tube end as described
above.
Changing the complete upper chain pro-
tection or the retention spring
Disassemble the chain roller. For this purpose
hold the nut on the left side of the frame with
a ring spanner SW 13 and undo the screw in
the chain roller with an Allen key SW 8.
Remember the exact position of the spacers.
Take the bolt off the frame together with the
chain roller. Between frame and chain roller is
a spacer that is encased in a transparent
plastic tube.
Take the retention spring off this spacer and
put on the new retention spring.Turn the
spring so that the retention springs run under
the spacer to the tubes and the wires lie bet-
ween frame and chain tube; that way the spi-
rals look outwards.
Lubricate the shaft of the retaining bolt. Push
the bolt through the chain roller, the washer,
the chain retention hook and the spacer with
the retention spring into the frame. Put on the
washer on the left side, secure the thread with
Loctite and tighten the nut with 14-16 Nm.
Changing the lower chain tube
Open the retention clips. On the bottom side
of the clip there is a lid that is put over a
hook.You can lift up the lid with a screwdriver
and expand the clip. Change the lower chain
tube and close the clips by fastening the lids
over the hooks.
Caution! The rear end of the upper chain
tube has to be secured against moving with
a cable tie that is wrapped around the tube
near the retention spring.Without the cable
tie the tube may be dragged forward into
the turning chain guide and thus be damaged
by the chain.