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TREK SERVICE INFORMATION August 2016
14. Crankset
The Speed Concept uses the same bearing system as a Madone; there are no parts that
thread into the frame. Instead, the bearings are a slip-fit into the frame. However, the Speed
Concept uses the new tighter fit of the bearings, which may require using a headset press
(see page 28). Do not use a hammer
to install the bearings into the frame. If the bearing fit
is too tight, make sure the bearing seats are clean and free of debris.
Bearings kits are available for all major brand of cranksets: SRAM/TruVativ/Bontrager GXP,
Shimano HollowTech, Campagnolo UltraTorque, and FSA MegaExo. Each kit includes a
slightly different set of bearings, seals, and spacers. When installing other crankset systems,
follow the manufacturer’s instructions to achieve the correct assembly and adjustment.
Figure 14.2. Inserting one half of the axle shield into
frame
Figure 14.1. Applying grease to the axle shield
Figure 14.3. Release tab
2. Place the male axle shield into the bottom bracket shell from the drive side (Figure
14.2).
3. Place the female (larger diameter) axle shield into the bottom bracket shell from the
non-drive side.
4. With a headset press (Figure 14.3), push together the two halves of the axle shield.
When they are inserted in the correct position, there will be an audible click.
To Install The Axle Shields
All bottom bracket systems share the same procedure to install the bottom bracket shields.
Do these steps before installing the bearings.
Your frame may already have the axle shields installed in the frame.
1.
Apply a light coat of grease to the male axle shield (smaller diameter, Figure 14.1).
5. To install the bearings for your choice of crankset, go to the instructions on the
following pages.
Part
PN
Axle shield (two
pieces)
281823
