ARMY TM 9-6115-642-24
AIR FORCE TO 35C2-3-455-12
MARINE CORPS TM 09247A/09248A-24/2
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4-12.2
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4-12.3
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Ratad capacity of lifting device must be at least 1000 lbs (454 kg).
Attach overhead lifting device to generator assembly lifting point. Take up .sIack to support weight of generator.
NOTE
The following step requires turning the generator by hand. Use engine fan to turn engine
and generator.
Remove bolts (6) and washers (7) securing fan (8) and drive plate (9) to flywheel (10).
Remove bolts (12) and gently pry (screwdriver slots provided) generator assembly away from engine assembly.
Move generator assembly to maintenance work area. Support assembly to prevent damage.
Remove bolts (13) and flywheel (10) from engine crankshaft.
Rated capacity of lifting device must be at least 1000 Ibs (454 kg).
Using overhead lifting device, carefully lift and position generator assembly on work table with end bell (31,
FIGURE 4-25) resting on table.
Remove bolts (14), Iockwashers (15), retention disk (16), spacer (17), drive plate (9), and fan (8) from rotor
assembly (18).
Use care to avoid contact between frame/stator assembly (5) and rotor assembly
(18).
Attach overhead lifting device to rotor assembly(18) and carefully lift rotor assembly (18) out of frame/stator
assembly (5).
Using gear puller, remove bearing (19) from rotor assembly (18).
Tag and disconnect F1+ and F2- leads from rotating rectifiers by removing nuts (20) and washers (21).
Using gear puller, carefully remove exciter rotor (22) from rotor assembly (18).
Using overhead lifting device, turn generator assembly over so that flywheel end is resting on table.
Remove bolts (23), Iockwashers (24), retention plate (25), bolts (26), Iockwashers (27), and cover (28) from
end bell (31).
Remove bolts (29), washers (30), and end bell (31 ) from frame/stator assembly (5).
Tag and disconnect exciter stator leads and AC voltage regulator leads from terminal block (36).
Remove bolts (32), Iockwashers (33), and exciter stator (34) from end bell (31).
Remove bolts (35), terminal block (35), and packing (37) from end bell (31).
Inspect end bell assembly (31, FIGURE 4-25) for cracks, torn packing (37), broken terminal board (36), and
other damage.
Inspect exciter stator (34) for broken windings, evidence of overheating, damaged insulation, and Ioose termi-
nal ends.
Inspect bearing (19) for looseness and evidence of overheating.
lnspect exciter rotor (22) for broken windings, evidence of overheating, damaged insulation, and other damage.
4-28
Inspection.
Disassembly.
