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 TM 55-1905-223-24-3
(7) Support the rotor drive end with a sling around the main generator rotor poles.
(8) Continue to pull and rotate the assembly as it is removed from the stator.
(9) Move the sling closer to the center balance point of rotor as it is removed (Figure 4-2f).
NOTE
The best location for the sling is where only a slight downward force on the fan is
required to balance the assembly.
(10) Set the rotor in a formed support as shown or leave it supported by the hoist to avoid damage to
the main exciter rotor windings (Figure 4-2g).
c. Remove the generator bearing. Removal of the bearing can be carried out after removal of the main
rotor assembly or by removing the end bracket only as described in step b. of this procedure.
NOTE
The bearing is enclosed in a pre-packed cartridge housing and must not be
dismantled unless necessary, for replacement of the bearing.
(1) Remove the four capscrews securing the bearing cartridge cap (Figure 4-3a).
(2) Remove the bearing cap (Figure 4-3b).
(3) Remove the clip from the generator shaft (Figure 4-3c).
CAUTION
Use two or more flat washers or a spacer between the puller and the end of the
shaft to avoid damaging the threads in the end of the shaft.
(4) Remove the bearing cartridge with a puller (Figure 4-3d).
(5) Press the old bearing from the bearing cartridge. Use solvent to clean the old grease from the
bearing cartridge and end cap (Figure 4-3e).
NOTE
The outer race of the bearing is a light press fit in the bearing cartridge.
d. Remove the rectifier assembly.
NOTE
The rectifier assembly is attached to the drive side of the main exciter rotor.
4-8
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