SRAM code rsc 2018 Service Manual page 18

4 Use a magnet to remove the detent spring and ball.
5
Remove the remaining reservoir cap bolt, then remove the reservoir
cap and bladder.
6 Pour the brake fluid into an oil pan. Squeeze the lever blade to force
any remaining brake fluid out of the lever body.
7 Separate the bladder from the reservoir cap.
Clean the reservoir cap, then discard the bladder.
T10
Oil Pan
Lever Blade Removal 18