Abstract: An adapter for fitting a flywheel housing to a rotary load has a generally circular centering plate having a central circular aperture dimensioned to fit snugly around the load's collar and a circular outer periphery. The centering plate is formed with first and second arrays of holes equispaced from a center of the aperture. The first-array holes are spaced identically to and alignable with fastening formations of the load. An adapter plate engaged flatly with the centering plate is formed with a first array of at least two holes spaced identically to and alignable with the formations, and is stiffened. Respective fasteners are engageable, when the first-array holes of both plates are aligned with the formations of the load, through the adapter plate, centering plate, and fastener formations. The second-array holes of the circular centering plate are covered by the adapter plate when the plates are thus fastened together.

Abstract: An adapter for fitting a flywheel housing to a rotary load has a generally circular centering plate having a central circular aperture dimensioned to fit snugly around the load's collar and a circular outer periphery. The centering plate is formed with first and second arrays of holes equispaced from a center of the aperture. The first-array holes are spaced identically to and alignable with fastening formations of the load. An adapter plate engaged flatly with the centering plate is formed with a first array of at least two holes spaced identically to and alignable with the formations, and is stiffened. Respective fasteners are engageable, when the first-array holes of both plates are aligned with the formations of the load, through the adapter plate, centering plate, and fastener formations. The second-array holes of the circular centering plate are covered by the adapter plate when the plates are thus fastened together.