The Flex Coupling Disc Pack provides clear operating guidance to support safe and accurate removal of the former flex drive coupling and proper installation of a new coupling on fuel injection equipment test stands. This manual explains the correct sequence of actions required to avoid alignment errors during coupling replacement activities. The instructions help maintain consistent torque transmission by ensuring the correct handling of the disc pack assembly.Attributes:• Provides step-by-step guidance for removing an existing flex drive coupling.• Guides the correct installation of a new flex coupling during replacement tasks.• Supports accurate torque transfer by ensuring proper coupling alignment.Applications: The Flex Coupling Disc Pack is applied within fuel injection equipment test stand drive assemblies, where flex drive couplings are handled during maintenance.