ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
4-11-3. Repair generator assembly by replacing damaged components.
a.
If ring gear (21, Figure 4-24) is damaged, place the flywheel (20) on a solid flat surface.
b. Drive ring gear (21) off with a brass drift and hammer.
Oil fumes or oil can ignite above 380°F (193°C). Use a thermometer and do not
exceed 360°F (182°C). Do not allow a flame or heating element to be In direct con-
tact with oil. Heat oil In a well ventilated area. Plan a safe handling procedure to
avoid burns.
Wear protective gloves to help prevent burns from handling hot ring gear (21).
If flame heat is used, be sure gear is heated uniformly around circumference. Do
not overheat. Overheating may also destroy original heat treatment of gear.
c.
Heat new ring gear (21) to 300°F (148°C) using either heated oil, oven heat, or flame heat.
d. Turn gear so side with chamfer is toward engine with flywheel installed.
e.
Install ring gear (21) against shoulder of flywheel.
4-11-4. Assembly/l nstallation.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j
k.
1.
m.
n.
4-28
Clean and inspect all mating surfaces.
Coat mating area between bearing (26, Figure 4-24) and end bell (5) with grease (Item 9, Appendix C).
Install engine flywheel/generator fan (20) on engine crankshaft with bolts (32). Torque bolts (32) to 51 ft-lbs.
(69 Nm).
Install thru-bolts (31) in adapter (15).
Press exciter rotor (30) on rotor assembly(16) to shoulder of shaft. Connect F1 + and F2- leads (29) on rotating
rectifiers with nuts (27) and washers (28), and remove tags. Torque nuts (27) to 24 in-lbs (2-7 Nm).
Press bearing (26) onto shaft of rotor assembly (16).
Install drive disc (25) on rotor assembly(16) with Iockwashers (24), washers (23), and bolts (22). Torque bolts
(22) 48 to 53 ft-lbs (65 to 72 Nm).
Using rope sling and lifting device (Figure 4-23), install rotor assembly (16) on engine flywheel/generator fan
(20) with Iockwashers (19), washers (18), and bolts (17). Torque bolts (17) 19 to 21 ft-lbs (26 to 28 Nm).
Use care to avoid contact between stator (14) and rotor assembly (16).
Using lifting device, install stator (14) into engine/generator adapter (15).
Install packing (11 ), bolts (8), washers (9), and brushless exciter stator (1 O) on end bell (5).
Install terminal board (13) on end bell (5) with bolts (12).
Connect leads (6) of brushless exciter stator (1 0) and AC voltage regulator leads (7) to terminal block (13) in
end bell (5) and remove tags.
Install end bell (5) with washers (4) and nuts (3). Torque nuts (3) 19 to 21 ft-lbs (26 to 28 Nm).
Install end bell cover (2) with bolts (1).
