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TREK SERVICE INFORMATION August 2016
To Install The Bearings
1.
Apply a liberal coat of grease to the contact surfaces of one bearing and the drive side
of the bottom bracket shell (Figure 14.7).
Figure 14.10. Greasing the bearing covers
Figure 14.9. Pressing the bearing into the frame
Figure 14.7. Greasing the bearing and the frame saddle
Figure 14.8. Grease on the frame and the non-drive side
bearing (with the lip facing in)
2. Slide a bearing onto the installation tool.
Either side of the drive-side bearing is the “right side.” The non-drive bearing on GXP
systems has a lip (Figure 14.8). Install the bearing so that the lip faces in.
3. Press one bearing into the drive side of the bottom bracket shell (Figure 14.9).
4. Repeat steps 1-3 for the other bearing on the non-drive side.
To Install The Drive-Side Crankarm
When handling the seals, avoid bending them. A bent seal will rub on the bearing, creating
drag.
1.
Apply a light coat of grease to the bearings on the face and the axle contact surface.
2. Apply a light coat of grease to the metal inside of one bearing seal (Figure 14.10).
