Bearing stiff plate pedestal

The method of installing a bearing stiff plate pedestal and bearing of a turbine, either a high pressure turbine or a low pressure turbine by replacing a bearing, mating upper bearing housing, mating yoke, and mating bearing spring plate pedestals, said bearing spring plates projecting from a pedestal base plate, comprising removing for the affected turbine, at least an outer pedestal cover, an upper bearing housing, an upper half of a turbine shaft bearing, a rotor of the affected turbine, a lower half of the turbine shaft bearing, and portions of the bearing spring plates, leaving remaining portions of the bearing spring plates and an upper surface of the pedestal base plate around the remaining parts of the pedestal spring plates exposed, so that the projecting remaining parts of the bearing spring plates and areas around them can be machined, machining the projecting remaining parts of the bearing spring plates to a condition either flush with the surrounding area or to a short height, thereafter, installing said bearing stiff plate pedestal fashioned as a drill fixture over the exposed surface of the bearing spring plate and the surrounding base plate, aligning the bearing stiff plate pedestal in a suitable manner, one manner being to mount a stub shaft on the end of the adjacent turbine rotor coupling hub, when it exists, and aligning the bore of the bearing stiff plate pedestal to the stub shaft, drilling and tapping holes in said pedestal base plate in conformance with the hole pattern in said bearing stiff plate pedestal fashioned as a drill fixture, removing said bearing stiff plate pedestal fashioned as a drill fixture, opening said holes in said bearing stiff plate pedestal sufficient to be clearance holes, if necessary or desirable, applying epoxy to said pedestal base plate in areas around said bearing spring plate pedestals, setting in place said new bearing stiff plate pedestal, realigning the bearing stiff plate pedestal as before, installing and tightening the hold down bolts, if epoxy has been used, after the epoxy has hardened, installing a bearing lower half with shimmed saddle blocks and ears, installing the affected turbine rotor shaft, bearing upper half with ears, verifying alignment of the rotors and bearings, and if necessary, adjusting the shim plates of the saddle blocks and the shim plates under the ears to obtain proper alignment, tightening the bolts through the bearing ears to retain tightly the bearing in the bearing stiff plate pedestal, coupling the affected and adjacent turbine rotors, if an adjacent turbine rotor exists, and installing said outer pedestal cover.