TREK CRONUS SERVICE INFORMATION - Trek Bicycle Corporation

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 48).
2. With the plastic bearing shield facing out, press one bearing into the drive side of
the bottom bracket shell (Figure 49).
3. Repeat Steps 1-2 for the other bearing on the non-drive side.
To install the drive-side crankarm
1. Apply a light coat of grease to the axle surface where the bearings will be in
contact (Figure 50).
+ The grease areas should be about 1 inch (25 mm) wide. On the drive side, start at the
bearing seal. On the non-drive side, start at the splines and apply toward the drive side
of the axle
Figure 48. Greasing the bearing and the frame saddle
2. Insert the axle through the drive-side bearing in the bottom bracket (Figure 51).
Figure 49. Pressing the bearing into the frame with the
shield on the outside
Figure 50. Greasing the axle
Figure 51. Sliding the axle through the bearings
24 | TREK GARY FISHER COLLECTION SERVICE INFORMATION