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X-3.4: Fitting/removing the wheel
•
When removing the wheel, we recommend you use a brake block spacer. This prevents the
piston from being pushed out if the brake lever is operated once the wheel has been re-
moved. This also prevents air bubbles in the expansion vessel from entering the system.
•
If the brake lever is operated and the brake block spacer is not inserted, the pistons may ex-
tend further than normal. Put the bike in an upright position to push back the brake blocks.
Use a clean flat screw driver or tyre lever and be careful not to scratch the brake blocks.
If the brake blocks are not fitted, push the piston back carefully without damaging it. If you
have trouble pushing back the brake blocks or piston, remove the reservoir cap and try
again. Note that some oil may flow out the reservoir.
• After fitting the wheel, check that the quick-release lever is on the side opposite the brake
disc. If it is on the same side as the brake disc, there is a danger of the lever and brake disc
obstructing one another and this could also reduce the clamping force of the quick-release
device.
XI. Bike gears
XI-1.
Derailleur gears
This User Manual describes the handling of typical, commercially available gear-shift compo-
nents for MTB, ATB, cross. Separate instructions are provided for other components on the CD
or on the web pages of the relevant manufacturer in the Internet. If you have questions on instal-
lation, adjustment, maintenance and operation, please consult a specialist cycle shop.
WARNING
If gear-shift components are loose, worn, damaged or adjusted incorrectly, this poses a
risk of injury to the rider. Have the derailleur gears adjusted at a professional bike work-
shop.
NOTE:
Always contact your specialist cycle shop if the chain jumps o’ the chain rings or sprock-
ets when riding or you hear unusual noises or you cannot change gears easily or the
rear derailleur, front derailleur or other gear-shift components are loose, damaged or
distorted or • chain links are defective or worn.
WARNING:
The bike chain must not be on the smallest chain ring at the front and the small outer
rear sprocket wheel simultaneously. The bike chain must not be on the largest chain ring
at the front and large inner sprocket wheel at the rear simultaneously. Otherwise the bike
chain could jump off.
Never pedal backwards when changing gears as you could damage the gear-shift mecha-
nism.
Only make changes to the gear-shift system carefully and in small increments. If settings
are made incorrectly, the bike chain could jump off the sprocket wheel and cause you to
fall o’ the bike. If you are unsure about what to do, have this work carried out by a profes-
sional bike workshop.
NOTE:
Even if the gear system is perfectly adjusted, rt can produce noise if the chain is running
at an extremely sharp angle. This does not mean it is defective and does not damage
the drive. As soon as the chain is at a more shallow angle, the noise will disappear.
