SRAM Reverb Stealth Service Manual page 15

Loosen the seatpost collar.
10
Remove the seatpost from the bicycle seat tube while simultaneously
11
Frame Hose Port
pushing the hydraulic hose into the hose port in the bicycle frame.
The hose port location will vary depending on the bicycle frame.
Consult with your frame manufacturer for additional information.
NOTI CE
Do not pull the seatpost out of the frame if there is tension at the hose.
This can cause damage to the hydraulic hose and hose barb.
Clamp the seatpost into a bicycle work stand.
12
Place a shop towel under the seatpost and hose to absorb any
hydraulic fluid that may drip when the hose is disconnected.
Seatpost Removal 15