Garneau e-URBANIA User Manual page 19

Remove the plastic caps from the wheel axle's hex nuts. Use two 18 mm
hex wrenches to loosen both nuts at the same time. The wheel can
then be removed from the frame.
To re-install the rear wheel on the bicycle, make sure the anti-rotation
washer is aligned with the drop-out opening of the frame.
Once the wheel is re-installed, make sure to tighten the nut to the
specified torque (30-40 Nm or 22-30 ft/lb). Then, connect the wire by
aligning both arrows on the two connectors and secure the wire to the
frame with the previously removed screw.
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