ARMY TM 9-6115-644-24
AIR FORCE TO 36C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
g.
Install generator set housing rear panel, paragraph 2-18-4.
h. Connect negative battery cable. Close battery access door.
4 - 2 0 R O T A T I N G
R E C I T I F I E R .
4-20-1 Removal.
a. Shutdown 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 and main bearing, paragraph 4-19-1.
e.
Remove bolts (3, FIGURE 4-12) and Iockwashers (4) securing exciter rotor leads (3 places) to rotating rectifier.
Tag and remove exciter rotor leads.
f.
Remove nuts (1), Iockwashers (2), tag and remove main rotor leads and rotating rectifier diode leads.
g.
Remove bolts(12, FIGURE 4-13), Iockwashers (13) and rotating rectifier (14) from rotor assembly (28).
4-20-2 installation.
a.
Install rotating rectifier (14, FIGURE 4-14) on rotor assembly (28) with bolts (12) and Iockwashers (13).
b. Connect two main rotor leads and rotating rectifier diode leads with Iockwashers (2, FIGURE 4-12) and nuts (1).
c. Connect three exciter rotor leads to rotating rectifier with bolts (3) and Iockwashers (4).
d. Install main bearing and generator end bell, paragraph 4-19-2
e.
install generator set housing rear panel, paragraph 2-18-4.
f.
Connect negative battery cable. Close battery access door.
4-21 Exciter Stator.
4-21-1 Testing.
a. Shutdown generator set. Allow generator to cool to ambient temperature.
b. Open battery access door and disconnect negative battery cable.
c. Open output box access door and disconnect exciter field leads F1 and F2 from terminals 1 and 2 of TB8.
d. Set multimeter for ohms and connect between disconnected exciter field leads. Multimeter reading should be
as shown in TABLE 4-3.
e.
Multimeter reading other than in TABLE 4-3, indicates open or shorted windings and exciter stator must be re-
placed.
f.
Connect multimeter between each exciter field lead and generator frame in turn.
g.
Multimeter reading of Iess than infinity indicates defective ground insulation and exciter stator must be replaced.
h. Connect exciter field leads to terminals 1 and 2 of TB8 and Close output box access door.
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