ARMY TM 9-6115-643-24
AIR FORCE TO 35C2-3-445-22
e. Remove bolts (3, FIGURE 4-13) and Iockwashers (4) securing exciter rotor leads (3 places) to rotating rectifier.
Tag and remove exciter rotor leads.
f. Remove nuts(1) and Iockwashers (2) securing generator rotor leads (2 places) to rotating rectifier. Tag and remove
generator rotor leads.
g. Remove bolts(11, FIGURE 4-15), Iockwashers(12) and rotating rectifier(13) from rectifier hub (14).
4.27.2 Installation.
a. Install rotating rectifier(13, FIGURE 4-15) on rectifier hub (14) with bolts (11) and Iockwashers (12).
b. Connect two generator rotor leads to rotating rectifier with nuts (1, FIGURE 4-13) and Iockwashers (2). Remove
tags.
c. Connect three exciter rotor leads to rotating rectifier with bolts (3) and Iockwashers (4).
d. Install main bearing and generator end bell, paragraph 4.26.2.
e. Install generator set housing rear panel, paragraph 2.18.4.
f. Connect negative battery cable. Close battery access door.
4.28 EXCITER STATOR (MEP-814A).
4.28.1 Removal.
a. Shut down generator set.
b. Open battery access door and disconnect negative battery cable.
c. Remove generator set housing rear panel, paragraph 2.18.1.
d. Remove generator end bell, paragraph 4.26.1.
e. Open output box access door and remove exciter field leads F1 and F2 from terminals 1 and 2 of TB8.
f. Attach “fish wires” to disconnected F1 and F2 leads to aid in installation process.
g. Remove setscrews(15 and 16, FIGURE 4-15) and exciter stator (17) from end bell (5).
h. Detach “fish wires” once F1 and F2 leads clear generator housing (10).
4.28.2 Testing.
a. Shut down generator set. Allow generator to cool to ambient temperature.
b .
c.
d .
e .
f.
g .
h .
i.
Open battery access door and disconnect negative battery cable.
Open output box access door and disconnect exciter field leads F1 and F2 from terminals 1 and 2 of TB 8.
Set multimeter for ohms and connect between disconnected exciter field leads. Multimeter reading should be as
shown in TABLE 4-3.
Multimeter reading other than in TABLE 4-3, indicates open or shorted windings and exciter stator must be re-
placed.
Connect multimeter between each exciter field lead and generator frame in turn.
Multimeter reading of less than infinity indicates defective ground insulation and exciter stator must be replaced.
Connect exciter field leads to terminals 1 and 2 of TB 8 and close output box access door.
Connect negative battery cable and close battery access door.
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