Gear system and chain
HP
Velotechnik
45
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spare tubes either as uncut tubes or already
cut into the correct length, complete with
retention spring from your specialist dealer.
Replacing the chain 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 remain-
ing part off the spring. Now move the smooth
part of the new tube through the spring and
rubber tube, then expand the tube end as
described above.
Changing the complete upper chain protec-
tion or the retention spring (Grasshopper fx)
Disassemble the chain roller. For this purpose
hold the nut on the left side of the frame with
a ring spanner size 13 and undo the screw in
the chain roller with an Allen key size 8.
The screw also connects the rear suspension
element with the main frame.
Danger!
If the bicycle does not stand
on the ground while undoing the screws of
the suspension element the rear swingarm
may come down uncontrolled afterwards
and hurt you seriously. In addition to this
the cables of the gear system and the
brakes may overstretch and you would
have to replace them. Ensure that the rear
swingarm comes down in a controlled and
gentle fashion by putting up a solid string
or cable tie between the main frame and
the rear swingarm. When the bicycle is
standing on the ground the frame and the
swingarm come up against each other.
Please make sure that this happens in a
controlled and gentle fashion. Put a cloth
between the contact points. Otherwise, if
they come up against each other uncon-
trolled your hands may get caught between
main frame, rear arm swing and suspension
element and your bicycle may be damaged.
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 plastic tube.
Take the retention springs off this spacer and
put on the new retention springs. Turn the
springs so that the retention springs run
under the spacer to the tubes and the wires
lie between frame and chain tube; that way
the spirals look outward.
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. Secure
the thread with threadlocker and tighten the
nut with 17–19 Nm.
Changing the complete upper chain protec-
tion or the retention spring (Streetmachine
Gte, Speedmachine)
Remove the bolt in the chain roller with an
Allen key size 6.Take off the chain roller, the
washer and the chain retention hook.
Remember the exact position of the spacers.
Take the bolt off the frame together with the
chain roller. The end of the threaded tube in
the frame is protected with a clear plastic
tube.
Take the retention spring off this plastic tube
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
between frame and chain tube; that way the
spirals face outwards.
Push the bolt back through the chain roller,
the washer and the chain retention hook,
secure the thread with threadlocker and
tighten the bolt with 17–19 Nm.
The recessed side of the chain roller has to
face to the frame. Make sure the washer is
placed between chain roller and plastic tube /
frame.
Changing the lower chain tube
The chain tube is connected to the mounting
plate by a rubber sleeve. For dismounting the