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 TM 9-2920-225-34
d.
Inspection and Repair.
NOTE
If parts are not within limits given in table 2-1,
generator is nonrepairable.
Measure roller bearing outside diameter (1) and inside diameter (2).
1.
Measure roller bearing inner race outside diameter (3) and inside diameter (4).
2.
Measure outside diameter of sliprings (5).
3.
Measure outside diameter of rotor shaft at roller bearing seat (6).
4.
Measure outside diameter of rotor shaft at drive end bearing seat (7).
5.
Measure drive end bearing inside diameter (8) and outside diameter (9).
6.
GO TO FRAME 2
Rotor, Stator, and Drive End Bell Assembly Wear Limits
Table 2-1.
Size and Fit of
Wear Limits
New Parts
Index
(inches)
(inches)
Number
Item /Point of Measurement
None
1.2495 to 1.2500
Roller bearing outside diameter
1
None
Roller bearing inside diameter
0.7508 to 0.7519
2
None
0.7482 to 0.7487
Roller bearing inner race outside
3
diameter
None
0.4995 to 0.5000
4
Roller bearing inner race inside
diameter
0.715 to 0.725
0.680
Outside diameter of sliprings
5
None
Outside diameter of rotor shaft at
6
0.5003 to 0.5006
roller bearing inner race seat
None
0.7874 to 0.7877
Outside diameter of rotor shaft of
7
drive end bearing seat
Drive end bearing inside diameter
None
8
0.7870 to 0.7874
Drive end bearing outside diameter
None
9
2.0470 to 2.0475
2-28
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