SRAM RockShox Super Deluxe R Service Manual page 16

Remove the backup ring from the second groove inside the air can.
3
Pierce and remove the quad seal from the bottom of the second
4
groove in the air can.
Spray isopropyl alcohol inside the air can and clean it with a rag.
5
Remove a glove and use your finger to inspect the inside and outside
of the air can for scratches, dents, or other surface deformations.
Replace the air can if it is scratched or damaged.
Install the quad seal by inserting one end into the deepest groove in
6
the air can, then push the remainder of the ring into the groove.
Air Can Service 16