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Cervelo PX-Series - 2020 Manual

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7 8
FORK INSTALLATION
Note: It is recommended that you familiarize
yourself with the steering system before
complete installation, by performing a trial
assembly without hoses or control cables
present.
Fork Insert
1. To prepare fork for the glue in Fork Insert, carefully sand a bevel to
the inside of the end of the circular steerer tube to t the insert.
2. Dry t Fork Insert to check that it is ush with the end of the steerer
tube.
3. Use isopropyl alcohol to clean the inside of the steerer tube and the
outside of the Fork Insert.
4. Fully mix the two-part epoxy and apply to the outer surface of the
Fork Insert with the wooden mixing stick.
5. Slide the Fork Insert into the steerer while rotating it slowly until the
ared end sits ush with the top of the steerer.
6. Wipe away any excess glue from the outside surface of the steerer
tube with the isopropyl alcohol wipe.
7. Set the fork aside and allow it to sit undisturbed for the full curing
period.
Do not attempt to t the fork into a bike prior to
the completion of the full curing period.
NOTE: This diagram is for assembly reference
only. During complete assembly, hoses and
control cables will be present.
Preload Fixing
Screw M6 x 30mm
Stem Cap
1 1/8" Upper
Bearing
(36˚x 45˚)
1 1/2" Lower
Bearing
(36˚x 45˚)
Stem Steerer
Clamp (ST-ST30)
Steerer Clamp Screws
Compression Ring
1. Check the Stem Steerer Clamp and headset components to make sure there are no sharp or
rough edges on any of the surfaces which could cut or damage the steerer tube. If any rough
edges are detected, have the components repaired (sharp edges removed) or replaced before
proceeding.
2. Press the upper and lower headset bearings into the frame, and insert the fork into the head
tube.
3. Slide the compression ring onto the steerer, and down until it fully seats in the top of the
upper headset bearing. The split in the compression ring must be oriented toward to the left or
right side of the steerer – never towards the front or back.
4. Slide the Stem Steerer Clamp onto the fork steerer oriented as shown. Note the Stem Steerer
Clamp must engage both the fork steerer and the external steerer. Do not use grease on the
fork steerer. The use of Tacx Carbon Assembly Compound™ or equivalent friction paste is
recommended to help secure the Stem Steerer Clamp.
5. Lightly grease the threads of the Preload Fixing Screw, and the Steerer Clamp screws.
6. Place the Stem Cap on top of the Stem Steerer Clamp and insert the greased M6 bolt through
the cap to engage with the star nut. Tighten the bolt only enough to remove all play from the
headset, and ensure that the fork still rotates freely.
7. Tighten the 2 greased Steerer Clamp Screws to the steerer using a torque wrench. Tighten to a
maximum of 5Nm.
8. As a nal check ensure that the fork rotates freely in the head tube without any play or
binding. If any problem is detected, loosen the bolts and perform steps 6) to 7) again.
Do not exceed the maximum torque specication for the stem. Correct tightening force on
fasteners – nuts, bolts, screws – on your bicycle is very important. Too little force, and the
fastener may not hold securely. Too much force, and the fastener can strip threads, stretch,
deform or break. Either way, incorrect tightening force can result in component failure,
which can cause you to loose control and fall.
… 5 …


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