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3. Install the handlebar on the steerer tube. Loosen the rear stem screws so
that the handlebar stem can slide along the fork steerer.
WARNING:
In case of full internal cables routing, please carry out the cables
routing before proceeding to the next step.
4. Install the expander (not included) in the fork steerer until it stops, and
tighten the expansion bolt at maximum of 3 Nm.
WARNING
: Make sure that the expander has enough length to ensure the
stem rear screws seat on the expander portion of the fork steerer. This will
reduce the risk of fork steerer notching while tightening the stem rear bolts.
5. Install the Aero top cap and tighten the compression bolt to preload the
headset bearings and adjust the headset play.
WARNING
: Overtightening can damage the ball bearings that could get
stuck under stress.
Follow carefully the tightening torque recommended for the operation and
maintenance manual of the headset you use.
6. Ensure handlebar is aligned straight in relation to the direction of travel.
Tighten the two rear stem screws into the barrel–nut alternately, turning ½
turn at a time, until a minimum torque of 4Nm is reached. If the handlebar
stem is not tight enough, increase the torque up to a maximum of 5 Nm.
Please check the handlebar stem, which should not rotate on the fork steerer.
WARNING
: Always use a calibrated torque wrench to tighten the bolts. Use the
minimum stem bolts tightening torque required to ensure that the handlebar
stem does not rotate on the fork steerer (Max. 5 Nm). An unnecessarily high
torque generates a dangerous state of radial compression on the fork steerer
which can cracks and/or break without notice.
