Rock Shox 30 Service Manual page 29

Apply grease to the new inner o-ring and insert it into the inner gland.
8
Apply grease to the ball end of a clean 10 mm hex wrench.
Insert the ball end of the wrench into the base plate, or negative piston,
and stop just below the inner o-ring gland.
Apply grease to the ball end of a clean 8 mm hex wrench and use it
to push the inner o-ring into the gland, using the 10 mm hex wrench to
guide the o-ring into the gland.
10 mm
8 mm
Air Spring Removal and Service - Gold
10 mm
10 mm 8 mm
29