Proximity Probe Bracket (Installation)

The drawing defines the installation of the proximity probe brackets on the generator unit. It locates the generator and turbine guide bearing probe brackets and the key-phasor bracket relative to the shaft, bearing covers, and existing hardware, using sectioned assembly views and details.

Scope covers installing two brackets each for the turbine and generator bearing probes, modifying the existing grounding brush bracket to accept the key-phasor bracket bolts, drilling and tapping holes in the lower bracket, and adding velometer probe holes installed by Manitoba Hydro. The turbine bracket is welded to the guide bearing cover after lead-paint removal, followed by touch-up painting. The probe gap is set by Manitoba Hydro.

A joint table specifies each connection: generator guide bearing bracket to lower bracket (1/2-13 UNC, 4 fasteners, Loctite 242, 40 ft-lb), key-phasor bracket to creep-indicator bracket (3/8-16 UNC, 12 fasteners, 30 ft-lb), and turbine guide bearing bracket to cover plate (3/8-16 UNC, 8 fasteners, 20 ft-lb). Welding follows CSA W59 and W47.1 with 100 percent visual inspection. The sheet was issued for construction.