12 TREK SERVICE INFORMATION August 2016
To Install The Housings In The Frame
If the housings are already in place in the frame, go to To install housings in the mono-
extension and aerobar, on page 14.
1. To differentiate it from the rear housing, mark each end of the front derailleur shift
housing with a piece of tape.
Note: Only 4 mm housing will fit into the derailleur housing stops. To determine the length
of housings, use the previous pieces as a guide, or install new 1500 mm pieces that you will
re-size later.
Figure 7.3. Shi housing extending out of the head tube
2. Slide the rear brake housing and both pieces of shift housing through the top tube
housing window (Figure 7.3), down the down tube, and out of the window at the bottom
bracket.
Figure 7.4. Boom bracket cable guide on shi housing
Figure 7.5. Brake housing along with shi housing
3. Install ferrules on the shift housings and slide them into the bottom bracket cable guide
(Figure 7.4). Attach the guide with the BB cable guide bolt and tighten to 3 Nm.
4. Put the brake housing in the middle of the shift housings at the head tube (Figure 7.5)
and at the bottom bracket between the two derailleur housing stops.
Note: To determine the length of housing, use the previous piece as a guide, or install a
new 700 mm piece that you will re-size later.
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