This is Chapter 4 of the four part video series covering FPG8601 Maintenance activities.
The video shows how to remove the piston-cylinder and recommendations for how to handle it when outside of the mounting post.
A key operation is the shutting down of the lubrication pressure to the FPG8601. This process vents the pressure which is normally present in the mounting post and the lubricating volume. This must be done before the lower mounting post can be removed or when the lubricating volume cover must be removed.