Oneway bearing

I really hate the engine brake on my 2015 Outlander 1000 Max so I decided to take off the oneway bearing and remove the springs just to see what it does for myself as there are conflicting reports about the performance. Like a good boy I figured I might as well service the oneway since I had it off. From posts, videos and my shop manual I expected to pop the bearings out and find the inside open and the bearings visible. Imagine my surprise to find the bearings sealed on both sides, the side of the bearing which is supposed to be open has the same plastic cover type deal the outside of the bearing has. Whats up with that?