Shimano Nexus Inter-8 Dealer's Manual page 32

3.
Remove the inner cable fixing bolt unit from the cassette joint
pulley.
• If it is difficult to pull the outer casing holder out from
the outer casing holder section of the cassette joint,
insert a 2 mm Allen key or a #14 spoke into the hole in
the cassette joint pulley, and then turn the pulley to
loosen the inner cable. Then remove the inner cable
fixing bolt unit from the pulley first, and after this
remove the outer casing holder from the outer casing
holder section.
Inner cable fixing bolt unit
Remove the inner
cable fixing bolt unit
Turn the
pulley
2 mm Allen key or #14 spoke
32
Cassette joint pulley
Remove the outer
casing holder
Pulley hole