Shimano NEXUS SG-C7002-5 Dealer's Manual page 40

Maintenance
Oil maintenance of the internal assembly
5. Let excess oil drain off for approximately 60 seconds.
6. Reassemble the hub.
After oil maintenance, it is recommended that you apply Grease (Y04130100) to the ball retainers,
snap ring, brake shoe, and pinion gears.
Ball retainer
The illustration shows an example.
For internal 11-speed (oil maintenance kit: Y13098023)
Content of kit: syringe, tube, bleed nipple, O-ring, container
Important safety information
Pinion gear
Ball retainer
Brake shoe
Snap ring
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