Trek Domane SLR 2020 User manual

2020 DOMANE SLR/SL
SERVICE MANUAL

1
2020 Domane Service Manual
Table of Contents
1. Install common components 2
A. Install and adjust the seatpost 2
B. Install the front derailleur 3
C. Install the rear derailleur 3
D. Install the chain keeper 3
2. Route and install brakes 4
A. Install rear brake in frame 4
B. Install front brake and brake hose 4
3. Route cables and housings through the frame 5
5
5
5
6
6
7
7
7
8
9
9
A. Mechanical
Route front derailleur housing
Route rear derailleur housing Install
the down tube cable guide Install
the down tube window frame
B. Di2
Route the front derailleur cable
Route the rear derailleur cable
Route battery and install
Install the down tube window frame
Handlebar cable routing
4. Install the fork 11
5. Route and install the stem and handlebar 12
Install the stem 12
Install the handlebar 12
A. Mechanical 13
Connect the brake hose and housing/cables 13
Install the top tube cable guide 13
B. Di2 13
Install the top tube cable guide 13
Install the shift levers 13
6. Domane torque specications 15
7. Service information 16
8. Appendix 17
A. Install the front isospeed 17
B. Install the rear IsoSpeed 20
C. Assemble and install the
DT storage door 22
D. Install the T47 bottom bracket 24
E. Install fenders 25
Install front fender 25
Rear fender chart 26

32
1Install common components
8. To adjust the seat height, loosen the seatpost
clamp bolt, adjust the height, and re-tighten
the bolt to the recommended torque value.
SEATPOST BOLT
NOTE Use a long stem 5mm socket on
your torque wrench to tighten the seatpost bolt. This
will allow an improved t on the bolt and will prevent
wrench marks on the bike nish.
B. Install the front derailleur
1. Use the special carbon washer and bolt to
install the front derailleur at the base of the
front derailleur hanger. Tighten the bolt just
until the derailleur is held. Do not fully tighten
yet.
C. Install the rear derailleur
1. Install the rear derailleur on the the rear
derailleur hanger. Tighten to OEM torque spec.
D. Install the chain keeper
1. Install the chain keeper at the base of the
front derailleur hanger. Torque the bolt to 3Nm.
1INSTALL COMMON COMPONENTS
A. Install and adjust the seatpost
TOOLS AND MATERIALS REQUIRED
• Saddle • Lower seal
• Seatpost • Long stem 5mm
hex
• Seatpost wedge and
bolts
• Torque wrench
1. Remove any tape or rubber band from around
the seatpost wedge prior to installation.
2. Install the lower seal into the bottom of the
seatpost.
NOTE For full seatpost insertion, you may
need to remove the lower seal.
3. Insert the seatpost into the seatmast. Be sure
to have the wedge placed in the seatpost prior
to insertion.
4. Tighten the bolt just until the seatpost and
wedge are snug. Do not fully tighten yet.
SEATPOST BOLT
5. Install the saddle. Make sure the clamp ear
correctly ts the saddle rail shape.
6. To adjust the angle of the top of the saddle,
loosen the rear pinch bolt, adjust the angle,
then re-tighten the bolt.
7. To adjust the fore/aft position of the saddle,
loosen the side rail clamp bolt, slide the
saddle, then re-tighten the bolt.

4 5
ROUTE CABLES AND HOUSINGS THROUGH THE FRAME
3
ROUTE AND INSTALL BRAKES
2
A. Mechanical
Route front derailleur housing
1. Route the front derailleur housing from the
head tube, down through the down tube, and
out the front derailleur hole at the base of
seat tube.
2. Insert the grommet onto the housing and
place the housing in the stop on the front
derailleur.
3 Set the grommet in place on the frame.
Route rear derailleur housing
1. Route the rear derailleur housing from the hole
in the chainstay, through the bottom bracket,
up the downtube, and out the top of the head
tube.
2. From the drive side of the head tube to the
non-drive side, the location of the housing and
hoses is:
REAR BRAKE
HOSE
REAR
DERAILLEUR
HOUSING
FRONT
DERAILLEUR
HOUSING
1. Front derailleur housing
2. Rear brake hose
3. Rear derailleur housing
A. Install rear brake in frame
1. Please see the gure at the bottom of page 5
for the correct housing locations at the head
tube.
2. Remove the rubber grommet from the non-
drive side chainstay.
3. Slip the grommet onto the brake hose and
route the hose through the grommet hole.
4. Route the hose through the bottom bracket, up
the down tube, and out the head tube.
5. Fit the grommet back into the hole in the
chainstay.
6. Bolt the brake in place.
B. Install front brake and brake hose
1. Place lower bearing on the fork race.
2. Route the hose through the fork access hole
(non-drive side) and up through the hole at the
back of the steerer tube.
3. Connect the brake to the fork. Tighten the
bolt just until the brake is snug. Do not fully
tighten.

6 7
3 3 Route cables and housings through the frameRoute cables and housings through the frame
2. Tighten the bolts to 1.2Nm.
3. Install the storage cover with the lever pointing
to the drive side.
COVER CLOSED
4. See the Appendix for the procedure: Assemble
and install the down tube storage door.
B. Di2
Route the front derailleur cable
1. Connect the front derailleur cable to the front
derailleur.
2. Place the cable through the grommet, into the
hole at the bottom of the seat tube, and out
the bottom bracket.
3. Set the grommet in place in the frame.
Route the rear derailleur cable
NOTE The rear brake should be installed
and the hose routed up through the head tube.
Pro Builder Tip: To help with this installation, use
the Park Tool IR-1.2 Internal Cable Routing Kit.
1. Connect the rear derailleur cable to the rear
derailleur.
3. Put the grommet around the derailleur housing
and insert the grommet into the bottom of the
drive side dropout.
4. Place the housing in the stop on the rear
derailleur.
Install the down tube cable guide
1. Slide the cable guide into the down tube
access hole and under the cables and hose.
2. Snap the cables and hose into the guide clips
in the correct order and location (non-drive
side to drive side):
1. Rear brake
2. Front derailleur
3. Rear derailleur
FRONT
DERAILLEUR
HOUSING
REAR BRAKE
HOSE
REAR
DERAILLEUR
HOUSING
3. While holding the housing and hose at the
head tube, move the guide down the downtube
to line up the guide holes with the holes in the
bottom of the downtube.
4. From the bottom of the down tube, use two
bolts to connect the cable guide to the frame.
Torque the bolts to 3Nm.
Install the down tube window frame
1. Install the window frame in the down tube
storage hole.
NOTE Make sure the window frame tab is
at the top of the storage hole.

8 9
33 Route cables and housings through the frameRoute cables and housings through the frame
9. From the bottom of the down tube, use two
bolts to connect the cable guide to the frame.
Tighten the bolts to 3Nm.
Install the down tube window frame
1. Install the window frame in the down tube
storage hole.
NOTE Make sure the window frame tab is
at the top of the storage hole.
2. Tighten the bolts to 1.2Nm.
3. Install the storage cover with the lever pointing
to the drive side.
4. See the Appendix for the procedure: Assemble
& install the down tube storage door.
Handlebar cable routing
Pro Builder Tips:
1. To help with this installation, use the
Park Tool IR-1.2 Internal Cable Routing
Kit.
2. For ease of cable routing, place the
handlebar in a bike mount xture.
2. Route the rear derailleur cable from the hole in
the driveside chainstay to the bottom bracket
hole.
3. Put the grommet around the derailleur housing
and insert the grommet into the bottom of the
drive side dropout.
Route battery and install
1. Place the battery in the battery holder and
cable guide.
2. Tighten the screws to 0.3Nm.
3. Connect the battery wire to the battery.
4. Route the battery wire in through the storage
hole and out the bottom bracket hole.
5. You should now have three wires out the
bottom bracket hole.
6. Slide the battery, wire, and the cable guide
assembly in the storage hole and under the
brake hose.
7. Snap the rear brake hose into the non-drive
side slot in the cable guide.
8. At the top of the head tube, hold the rear
brake hose and move the guide down the
downtube to line up the guide holes with the
holes in the bottom of the downtube.

1110
3Route cables and housings through the frame 4INSTALL THE FORK
Install the fork
1. With lower bearing installed on the fork, slide
the steer tube and brake hose up through the
bottom of the head tube.
2. Guide the brake hose out through the top tube
cable hole.
3. Slide the steer tube through the IsoSpeed
assembly.
NOTE Make sure the two brake hoses and
the derailleur cable(s) are positioned in the top tube
cable hole.
REAR BRAKE
HOSE
FRONT BRAKE
HOSE
REAR
DERAILLEUR
CABLE
FRONT
DERAILLEUR
CABLE
4. Install in order: Front IsoSpeed grommet,
IsoSpeed spacer, upper bearing, split ring, and
top cap.
5. Install the brow cover. Flex the sides of the
brow cover outward, and position it over the
top of the head tube.
1. Route the Park Tool wire from the right bar
end through the handlebar and out the left bar
end.
2. Pull the long left shifter Di2 wire (1200mm)
from the right bar end through the handlebar,
and out the shifter hole in the bottom of the
left side. Tape the wire to the handlebar.
3. Route the short right shifter Di2 wire from the
shifter hole in the bottom of the right side, and
out the right side bar end. Tape the wire to the
handlebar.
You now have two Di2 wires sticking out the right
side handlebar end.
4. Plug the two wires into the bar end plug.
NOTE The location of the two wires in the
bare end plug does not matter.
5. Route a Di2 wire from the top of the head
tube, down the down tube, and out the bottom
bracket hole. This wire connects to the right
shifter.
You now have four Di2 wires sticking out the bottom
bracket hole.
6. Plug all four wires into the junction box. The
location of the wires does not matter.
7. Put the junction box and four wires through the
bottom bracket hole and into the down tube.

1312
5Route and install the stem and handlebar
5ROUTE AND INSTALL THE STEM AND HANDLEBAR
A. Mechanical
Connect the brake hose and
housing/cables
Install the top tube cable guide
1. With the cable guide in the correct orientation,
snap in the brake hoses rst, then the
derailleur cables.
• Drive side: Rear brake hose; rear
derailleur cable.
• Non-drive side: Front brake hose; front
derailleur cable.
2. Slide the cable guide down into position in the
top of the head tube hole.
NOTE Moto style routing will have the brake
hoses swapped.
3. Install the bolt and tighten to 1Nm.
CORRECT ORIENTATION
B. Di2
Install the top tube cable guide
1. With the cable guide in the correct orientation,
snap in the brake hoses rst, then the Di2
wire.
• Drive side: Rear brake hose; Di2 wire.
• Non-drive side: Front brake hose.
2. Slide the cable guide down into position in the
top of the head tube hole.
3. Install the bolt and tighten to 1Nm.
Install the shift levers
1. Route the hoses and wires (Di2) or cables
(mechanical) through the cable wrangler.
2. From the wrangler, route the lines along the
left and right sides of handlebar.
VIEW FROM BELOW
Install the stem
1. Install any desired headset spacers and the
stem onto the steerer tube.
2. Align the stem and tighten the stem pinch
bolts to the recommended torque.
Install the handlebar
1. Snap the cable wrangler onto the handlebar.
The location is important as the wrangler will
sit in the stem.
NOTE There are different cabler wranglers for
different stems depending on Blendr compatibility.
(PNs: 582439, 584649, 587846).
NOTE Trek recommends using the cable
wrangler on stems 100mm and longer. For stems
shorter than 100mm, the cable wrangler does not
provide any additional benet.
2. Put the handlebar in place on the stem and
tighten the faceplate bolts to spec.
NOTE Make sure the tabs on the wrangler line
up with the spaces on the stem.
3. When the cable wrangler, stem and handlebar
are properly assembled, a person should
be able to pull on the cable loop with no
movement between the clip and the handlebar.
CABLE WRANGLER LOOP
4. When properly assembled, you should not
be able to see the cable wrangler tab at the
bottom of the stem.

1514
5Route and install the stem and handlebar
3. Place the shift levers on the handlebar to the
desired location.
4. Trim the brake hose and shifter housing to
the proper length. The cable length should be
sufcient to allow the bars to freely rotate +/-
60 degrees.
6DOMANE TORQUE SPECIFICATIONS
Component Torque value
Chain keeper bolt 3Nm
Down tube window frame bolt 1.2Nm
Battery holder bolts 0.3Nm
Cable guide to frame bolts 3Nm
Rear Isospeed frame screw 8Nm
Top tube cable guide bolt 1Nm
Damper assembly bolts 5Nm
Bottom bracket 50Nm maximum
Storage door-tool holder screws 1Nm
Seatpost bolt 7Nm

16 17
Di2 handlebar specications for reference
DS shifter to
junction A
NDS shifter to
junction A
DS shifter to
junction B
Battery to
junction B FD to junction B RD to junction B
300 1200 14001300 400 600
NOTE 1 This wire length will change with
respect to frame size, stem length, or bar width. All
other wire lengths stay the same regardless of frame
size.
7SERVICE INFORMATION 8APPENDIX
A. Install the front Isospeed
1. Apply grease to the bore holes, as well as the
inside face and both sides of the head tube.
2. Place a washer over each bearing in the front
IsoSpeed decoupler.
3. Pinch the Front IsoSpeed decoupler between
two ngers to hold the washers, and carefully
guide it into the cavity in the head tube. Stop
when the holes in the decoupler are aligned
with the bore holes in the frame.
4. From inside the decoupler, insert a screw into
the driveside bore hole so the screw points to
the outside of the head tube.
5. Point the end of the elliptical nut with the
chamfer towards the bore hole.
CHAMFER
6. Place a nger inside the decoupler and push
the screw towards the outside of the head
tube.
COLOR CODE, FOR DRAWING ONLY:
REAR BRAKE = RED
FRONT BRAKE = DARK GRAY
Di2 WIRE = LIGHT GRAY
RIGHT SHIFTER
- TO BAR END PLUG
- TO JUNCTION B
BAR END PLUG
- TO L SHIFTER
- TO R SHIFTER
THRU BAR,
OUT HOLE ON L DROP
UNDER BAR TAPE
JCT B
- TO R SHIFTER
- TO BATTERY
- TO FD
- TO RD

18 19
88 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 rm
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 at 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.

20 21
88 Install the rear IsoSpeed
B. Install the rear IsoSpeed
1. Install the damper assembly in the seat tube.
The damper orientation should be up.
2. Hold the damper assembly in place and install
two M4 bolts. Tighten the bolts to 5Nm.
NOTE Make sure the damper adjustment
screw is backed out.
3. Place the IsoSpeed grommet over the top of
the seat mast.
4. Clean the surface with
alcohol or similar
degreaser and install
the adhesive bumper
on the forward end of
the seat mast tongue.
5. Insert the seat mast into the frame.
6. Put the grommet in place in the frame.
7. Insert the pivot bolt, washer, wave washer, and
nut on the non-drive side.
IMPORTANT: The washer and wave washer must be
on the bolthead side.
Install the rear IsoSpeed
FLAT WASHER
WAVE WASHER
BOLT HEAD
8. Torque the bolt to 8Nm. Use the torque wrench
on the 8mm side, not the 6mm side.
9. Install the slider on the seat mast tongue.
10. Install the bolt and washer in the forward end
of the decoupler and torque to spec on decal.
11. Tighten the damper adjustment screw.

22 23
2020 Domane Service Manual
88
C. Assemble and install the
DT storage door
PARTS REQUIRED:
12
5
8
3
6
4
7
1. Wave washer
2. Flat washer
3. Lever
4. Pin
5. Wings
6. Storage door
7. Screws (2)
8. Wing cover/Tool holder
1. Preload the pin in the wing.
NOTE Make sure the pin is not pressed into
the hole in the middle of the wings.
2. Put the straight washer on the lever shaft.
3. From the inside, put the wave spring over the
lever shaft.
4. Put the wing over the lever shaft with the wing
ribbing visible.
5. Line up the holes in the shaft and the wing
with the lever in the closed position and the
wing perpendicular to the water bottle line.
Assemble and install the DT storage door Assemble and install the DT storage door
6. Press the pin through so it’s ush with the
wing.
7. Set the tool holder tab in the channel on the
door.
8. Install and torque the two screws to 1Nm.
9. If equipped with a Bontrager multi-tool, push
the tool into the holder from the non-notched
side until it clicks into place.
10. To release the tool, push on the tool at the
notch and pull up on the opposite side of the
holder. Push the tool out at an approximate
45-degree angle.
PRESS HERE
PULL HERE

24 25
2020 Domane Service Manual
8Install the T47 bottom bracket
D. Install the T47 bottom bracket
1. Grease the threads on the bottom bracket.
2. Grease the threads on the frame
3. Start threading the bottom bracket into the
frame by hand:
• Drive side: reverse threads
(left hand thread)
• Non-drive side: regular threads
(right hand threads)
4. Use the installation tool specic to your
bottom bracket to torque the bracket to the
OEM spec. Do not exceed a maximum of
50Nm.
9Install fenders
E. Install front fender
TOOLS REQUIRED
• 4mm hex head wrench, extended arm,
round head
• Loctite Blue 242
Trek recommends using Bontrager fenders.
Domane SL, SLR, and LT models
1. Remove the set screw or plastic plug from
under the fork crown.
2. Remove the two bolts from the fender
mounting tab and remove the tab.
3. If the top mounting bolt has been used before
or the bolt has no adhesive, apply fresh Loctite
Blue 242 to coat the threads.
NOTE The bolts included with your
Bontrager fender will have Loctite pre-applied.
The top mounting bolt should be a button-head
type and at least 0.5in (12.7mm) long.
4. Use the bolt with Loctite to attach the fender to
the underside of the fork crown.
5. Use the instructions that came with the fender
to complete the installation.
Domane HP models
1. Remove the set screw or plastic plug from the
rear of the fork.
2. If the top mounting bolt has been used before
or the bolt has no adhesive, apply fresh Loctite
Blue 242 to coat the threads.
NOTE The bolts included with your
Bontrager fender will have Loctite pre-applied.
3. Bend the fender tab as necessary to best t
the angle of the fork.
4. Use the bolt with Loctite to attach the fender
to the rear of the fork.
5. Use the instructions that came with the fender
to complete the installation.

26
2020 Domane Service ManualInstall fenders
9
Rear fender chart
Part Number Description Frame Size
Domane SL Domane SLR Domane+ LT Domane+ HP
575637
Center mount facing down
56 – 62 56 – 62 56 – 62
575637
Center mount facing up
47 – 54 52 – 54 52 – 54
595608
Fender mount - small
44 47 – 50 50
592674
Spacers or struts installed
outside of fender bridge/
inside of seat stay.
56 – 60
592674
Spacers or struts installed
inside of fender bridge/
under bolt head.
52 – 54