SRAM RSC Service Manual page 18

9 Pour the fluid from the brake lever body into a pan.
10
Separate the bladder from the reservoir cover.
Spray isopropyl alcohol on the bladder and the reservoir cover and
clean them with a rag.
All components must be completely dry before reinstalling them.
Moisture residue from cleaning the bladder can leak out of the bladder
as it dries, which can be misinterpreted as a system leak.
11 Use a T10 TORX® wrench to remove the lever pivot bolts.
12 Remove the lever blade.
NOT ICE
T10 TORX wrench
Lever Blade Removal 18