Shimano Nexus Service Instructions Manual page 12

Handling the
Installation of the front wheel
hub dynamo
Install the wheel so that the side with the hub dynamo connection terminal is on the right
side when looking toward the front of the bicycle, and so that the hub connection terminal
is aligned with the front fork or with the basket stay. Then install by following the
procedure shown in the illustration below so that the connection terminal is facing upward.
Do not force the connection terminal to turn after the quick release nut or the cap nut has
been secured.
Front fork
Mudguard stay
Quick release nut
Removing and installing the front wheel
When removing the bicycle wheel, first remove the connector cover. If the cables are pulled
strongly, it may break the cable wires or cause poor contacts. Furthermore, when installing
the wheel, first secure the wheel to the front forks and then connect the connector cover.
Checking the lamp illumination
Check that the lamp mode is set to AUTO and that the light sensor window of the computer
unit (AI-8S40) is covered to shade it from light. The rotate the front wheel and check that
the lamp illuminates. (If the bicycle has not been used for a long time, it may take a short
amount of time for the system to start up, and the lamp will not illuminate during that time.
Connection terminal
Volute spring
Connector cover
Connect
Front fork
Connection
terminal
Mudguard stay
Quick release nut
Cable
Front fork
Light sensor window