Trek 2021 E-CALIBER - Headset with Knock Block

2021 E-Caliber Service Manual
2
Headset with Knock Block
1
2
3
4
5
6
7
Item Description
Quantity in
Assembly Part Number Torque (Nm)
1 Upperbearingcover 1
5252159
—
2 Knock Block chip bolt 1 2
3 Knock Block chip, 62 degrees 1 —
4 Compression ring 1 —
5 Upperbearing 1 —
6 Lower bearing 1
5252158
—
7 Crown race 1 —
Tools
• 2.5mmhextool
• Torquewrenchwith2.5mmhexbit
• Headset tools
• Grease
1. Inspectthecomponentsfordamageorexcessive
wear.
• Knock Block chip (3)
• Undersidechanneloftheupperbearingcover(1)
• Interlocking keys of the upper bearing cover (1)
and the stem
2. Replaceanydamagedorworncomponents.
3. Apply grease to:
• Upperandlowerheadtubebearingbores.
• Inside of the bearing seats of the compression
ring(4)andthecrownrace(7).
4. Install the crown race (7), then the lower the bearing
(6)ontothesteerertube.
5. Insert the steerer tube into the bottom of the head
tube.
6. Install the upper bearing (5), then the compression
ring(4)ontothesteerertube.
7. Insert the Knock Block chip (3) and bolt (2) into the
frame,butdonottightenit.
8. Installtheupperbearingcover(1).
9. Installspacersasneeded.
10. TorquetheKnockBlockchipbolt(2)to2Nm.