Trek Domane SL 2020, Service Manual

Page: 11 / 16

18 19
8 8
Install the front Isospeed
7.
Hand thread the elliptical nut a few turns to
the LEFT to secure it for the next step. Do not
grease the threads.
8.
The elliptical nut is an oval shape and
matches the oval shape of the bore hole in
the head tube. When the elliptical nut is hand
tight, align the oval of the nut with the style
line of the head tube.
STYLE LINE
9.
Place one hand on the opposite side of the
head tube (9a) and with the other, insert the
torque key into the nut and apply pressure
with both hands until the nut seats into the
head tube (9b). Then turn clockwise, with firm
pressure (9c). This will draw the screw inside
the head tube towards the nut. Turn until snug,
do not fully tighten.
9c
9b
9a
10.
Repeat steps 4 through 8 for the other side of
the decoupler.
CHAMFER
11.
Repeat step 9 for the other side.
Install the front IsoSpeed
12.
To fully tighten, apply good pressure while
turning the torque wrench. This will prevent
the bolt inside the decoupler from spinning
and will draw it towards the nut. Tighten to a
maximum of 8Nm.
13.
Repeat step 12 for the other side.
14.
Check the decoupler for free movement after
installation. If it does not move freely, loosen,
clean the connections, apply grease, and
reinstall.
15.
Lower the pre-load spacer into the decoupler
so that the label “BEARING” is on the top and
“SPRING” is pointed down.
NOTE
There are flat sides that line up with the
screws on either side of the decoupler.
BEARING
SPRING
NOTE
Grease should not be applied to the
IsoSpeed assembly except for the top chamfer where
the upper bearing is positioned. Do not apply grease
to the lower bearing, wave washer, lower split ring, or
spacer.