Sentra GXE L4-1.8L (QG18DE) (2000)
1. Remove piston by turning it counterclockwise with suitable commercial service tool or long nose pliers.
2. Pry off ring A from piston with suitable pliers and remove cup, adjuster, bearing, spacers, and washer.
3. Disassemble cylinder body.
a. Pry off ring B with suitable pliers, then remove spring cover, spring and seat.
b. Pry off ring C, then remove key plate, push rod and rod.
c. Remove piston seal with a suitable tool. Be careful not to damage cylinder body.