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Fundamental information »
Torques
WARNING
Risk of accident and injury!
Incorrectly tightened screws can lead to material fatigue.
When subjected to excessive strain, screws become
malleable and can rupture.
• If you notice loose screw connections, ask your spe-
cialist dealer to tighten them using a torque key.
• If you tighten screws yourself, use a torque key and
seek information from your specialist dealers about
the torque to use.
To tighten the screws you will require a torque key with the
appropriate adjustment settings.
• If you are inexperienced in tightening screws using torques,
take your bicycle to your specialist dealer so that they can
tighten loose screws in a technically correct manner.
The torque required depends on the material and diameter of
the screw and the material/method of assembly of the com-
ponents.
• Verify if your bicycle has any aluminium parts (see chapter
“Bicycle Passport”).
• Note the specific torques required for aluminium.
• If torques are embossed or printed on the components,
use these torques.
Loose screws on the handlebar stem, on the brake, on the
bottom bracket or on the gear shift can indicate other defects.
• Take your bicycle to your specialist dealer to have any loose
screw connections on the handlebar stem, the brakes or the
gear shift tightened.
» Fundamental information » Torques
