Main Rotor Removal - Marathon Electric MAGNAMAX Installation, Operation And Maintenance Manual

This snap ring must be removed before the
generator main rotor can be removed.
(Figure 6-20.)
Figure 6-20

MAIN ROTOR REMOVAL

1. Remove the exciter armature and PMG.
2. For single bearing generators, remove the
four cap screws holding the bearing caps to
the front-end bracket. (Figure 6-21.)
Remove the outer cap. (Figure 6-22.)
For two-bearing generators, remove the
drive coupling or sheave and key from the
shaft extension. Remove the four cap screws
holding the bearing lock to the drive end
bracket. (Figure 6-23.) Remove the four cap
screws holding the bearing caps to the front-
end bracket. (Figure 6-21.) Remove the
outer cap. (Figure 6-22.)
Figure 6-21
Figure 6-22
Figure 6-23
33