A support assembly for servicing a stator frame of a power generator, the stator frame including a main housing having a first end and an axially spaced apart second end and supporting a stator core formed by a plurality of laminations that have grooves formed in outer surfaces thereof for receiving respective axially extending keybars to couple the keybars to the laminations, the stator frame further including a plurality of spring assemblies comprising spring members affixed to frame rings of the main housing, spacer blocks for providing a gap between the laminations of the stator core and the spring members, and fastening hardware that is used to attach the keybars provided in the grooves of the laminations to the spring members so as to structurally support the stator core within the main housing, the support assembly comprising: a plurality of rails supported on the frame rings of the main housing and extending axially within a bottom portion of the main housing, the rails having upper surfaces that provide temporary support for lower support surfaces of second laminations of a second stator core once the second laminations are inserted into desired axial positions within the main housing; and a trolley provided for axial movement on the upper surfaces of the rails for inserting the second laminations into the main housing, the trolley comprising: a lamination-engaging portion including a lamination support surface for supporting upper support surfaces of the second laminations; a plurality of rail wheels (58A, 58B) provided for axial movement of the trolley within the main housing on the upper surfaces of the rails, characterized in that at least some of the rail wheels are movable from rail engaging positions when in the main housing to floating positions when out of the main housing; and at least one deck wheel is provided for axial movement of the trolley outside of the main housing on a floor surface (T D), wherein the rail wheels (58A, 58B) comprise front rail wheels and rear rail wheels spaced apart from the front rail wheels in the axial direction, wherein only the rear rail wheels are movable from rail engaging positions when in the main housing to floating positions when out of the main housing. a plurality of rails supported on the frame rings of the main housing and extending axially within a bottom portion of the main housing, the rails having upper surfaces that provide temporary support for lower support surfaces of second laminations of a second stator core once the second laminations are inserted into desired axial positions within the main housing; and a trolley provided for axial movement on the upper surfaces of the rails for inserting the second laminations into the main housing, the trolley comprising: a lamination-engaging portion including a lamination support surface for supporting upper support surfaces of the second laminations; a plurality of rail wheels (58A, 58B) provided for axial movement of the trolley within the main housing on the upper surfaces of the rails, characterized in that at least some of the rail wheels are movable from rail engaging positions when in the main housing to floating positions when out of the main housing; and at least one deck wheel is provided for axial movement of the trolley outside of the main housing on a floor surface (T D), a lamination-engaging portion including a lamination support surface for supporting upper support surfaces of the second laminations; a plurality of rail wheels (58A, 58B) provided for axial movement of the trolley within the main housing on the upper surfaces of the rails, characterized in that at least some of the rail wheels are movable from rail engaging positions when in the main housing to floating positions when out of the main housing; and at least one deck wheel is provided for axial movement of the trolley outside of the main housing on a floor surface (T D), wherein the rail wheels (58A, 58B) comprise front rail wheels and rear rail wheels spaced apart from the front rail wheels in the axial direction, wherein only the rear rail wheels are movable from rail engaging positions when in the main housing to floating positions when out of the main housing.