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 TM 55-1905-223-24-3
(2) Remove the four outer capscrews holding the end bearing cap in the end bracket (Figure 4-2a).
NOTE
Do not remove the inner four capscrews unless the bearing is to be replaced.
CAUTION
The main exciter stator is attached to the end bracket and comes out when the end
bracket is removed. Use extreme care not to damage the main exciter as the end
bracket is removed.
(3) Remove the eight hexhead capscrews holding the end bracket to the frame (Figure 4-2b)
(4) Insert 2 capscrews in the jacking holes (Figure 4-2b) to provide for "jacking" purposes on the end
bracket center line. Screw bolts in until end bracket is clear of locating recess.
NOTE
Tap the end bracket lightly while turning the jacking screws in. Make sure the
bearing cartridge is not stuck in the end bracket.
CAUTION
Do not pry on the fan ring between the fan blades. The fan blades can be easily
bent or broken. The entire generator rotor must be disassembled (normally at the
factory) to replace a generator fan.
(5) Move the rotor out from the stator by prying on the fan ring at a fan blade (Figure 4-2c).
(6) Rotate the rotor while pulling it from the stator assembly. Pull the rotor out until the main-otor
t
poles are exposed (Figure 4-2d).
CAUTION
As the rotor is fully withdrawn from the stator core, THE FULL WEIGHT OF THE
ROTOR MUST BE SUPPORTED-BY THE HOIST. If the rotor core is allowed to
drop more than a few millimeters at this point, it will make contact with the stator
windings, and may damage them. Do not use any force on the generator fan
during lifting or rotating the assembly.
NOTE
This operation will be easier with a second person supporting and guiding the non-
drive end of the shaft
4-6
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