Shimano NEXUS SG-C7002-5 Dealer's Manual page 24

Installation/removal
Installation of the hub to the frame
2. Place non-turn washers onto the right and left of the hub axle.
Turn the cassette joint so that the protrusions of the non-turn washers fit into the grooves in the rear
dropouts and align the joint to be installed almost parallel to the chainstay.
Non-turn washer (for left-side use)
Cassette joint
Chainstay
When installing parts such as a mudguard stay to the hub axle, install them in the order shown in
the figure.
Non-turn washer
When installing the hub to the frame, the chain guard may come off. Make sure that the chain
guard is securely installed. If not properly installed, noise may be generated.
Chain guard
Rear dropout groove
Non-turn washer
(for right-side use)
Mudguard stay
Carrier stay
Washer
Cap nut
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