Mount the assembled rejected capsule container and check the alignment by pushing it up and down the post.
But my mind? Oh, my mind went straight to the gutter.
EDIT: at this point I have lost track of the number of times I have typed "insert" and "mount".
EDIT2: Oh, I give up. Either my head is permanently in the gutter today... or the orignal writer's was. This is another example of what I am dealing with right now.
Carefully mount the lower pumping unit to the machine by fitting the vertical pump heads on the vertical piston heads. Fit the appropriate holes on the bottom side of the lower pumping unit on the set screws. Set the unit into place by pushing firmly downward.
mount, pump, heads, hole, screws, pushing