Owner`s manual

24
Cervélo Owner’s Manual
G. Tightening of Fasteners
Your Cervélo bicycle is equipped with precision components which
require precise adjustment and care in order to function properly. When-
ever components are changed or adjusted on the bicycle, it is critical for
safety and performance reasons that all fasteners be tightened in
accordance with the listed values below. It is recommended that you
permit your dealer to perform the following adjustments, as they have
the proper tools and experience to ensure it is done correctly. Improper
adjustments can result in safety hazards – ensure you read all applicable
documentation and have the correct tools prior to attempting any
adjustments yourself.
Note that prior to assembling and tightening any bolts, all threads must
be generously greased with a quality, non-lithium type grease. Torque
wrenches with scale appropriate for the particular torque setting are
strongly recommended for tightening all threaded fasteners.
Cervélo strongly recommends the use of carbon assembly
compound/friction paste for all areas of clamping to carbon fiber,
such as the seatpost to frame, the stem to fork, and the handlebar
to stem joints. Benefits to using this paste include reduced
corrosion potential, and a decrease in required clamping force
needed to support a given load. The paste should be evenly spread
on the carbon surface under the clamped area, and the applicable
bolt tightened as per the following recommendations.
WARNING: In case of a disagreement or a conflict
between the following list and any supplier literature
on recommended torque values for original equipment
components, please contact Cervélo Customer Service for
review and clarification of the required torque prior to
installation.
• Water bottle cage bolts – 2 to 3 Nm
• Stem (to handlebar/basebar) – 8 to 12 Nm for aluminum handlebars;
5Nm for carbon handlebars
• Stem (to fork steerer tube) – 4 to 5 Nm
• Bottom bracket cable guide – 1 Nm
• Brake/shift levers – 5 to 8 Nm
• Brake calipers – 8 to 10 Nm
• Brake plate (P2,P3, S5) – 4 Nm
• Rear derailleur hanger bolts – 1 Nm
• Stem top cap – Apply only enough torque to remove all headset play
while ensuring it rotates freely. 1 to 2 Nm is recommended.
• Aerobar extensions (to basebar) - refer to manufacterer’s specifications
• Aerobar extensions (to armrest bolt) - refer to manufacterer’s
specifications
• Saddle (seatpost head bolt):
• Aero Tri/TT seatpost (P2, P3, P5, T4) saddle clamp bolt – 12 Nm;
seatpost head to seatpost rail bolt – 6 to 7 Nm
• Carbon Two Offset seatpost (S5 ) saddle clamp bolt – 12 Nm (Note
that 2 Allen keys are necessary to prevent the bolt from
turning while applying the proper torque; this must be verified
using a torque wrench. Insufficient torque will cause the saddle to
slip, possibly causing premature wear to the clamping mechanism.)
• Carbon Single Offset seatpost (S2, S3) saddle clamp bolt - 12 Nm