ARMY TM 9-6115 645-24
AIR FORCE TO 35C2-3-444-12
MARINE CORPS TM 09244A/09245A-24/2
4-18.2. 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 end bell cover plates, paragraph 4-19.1, step h.
NOTE
It will be necessary to bar (turn) engine in order to position a specific area of the rotating rectifier at
one of the end bell access holes. Use center bolt on harmonic balancer to turn engine, refer to TM
9-2815-256-24.
e.
Unsolder electrical lead from diode (7, FIGURE 4-16) being removed.
f.
Remove nut (5), lockwasher (6), and diode (7) from rotating rectifier assembly through access hole in end bell.
4-18.3. Installation.
a.
Run bead of thermal-electrical contact compound (Item 9, Appendix C) around base of diode (7, FIGURE 4-16)
prior to installing. Do not coat threads.
b.
Insert diode (7) through generator end bell access hole, and install on rotating rectifier plate with lockwasher (6)
and nut (5). Torque nut (5) 28 to 30 in-lbs. (3.16 to 3.38 Nm).
c.
Using solder (Item 19, Appendix C) and soldering iron, solder electrical lead to diode (7).
d.
Install generator end bell cover plates, paragraph 4-19.2, step h.
e.
Install generator set housing rear panel, paragraph 2-18.4.
f.
Connect negative battery cable and dose battery access door.
4-19
END BELL AND MAIN BEARING.
4-19.1. Removal.
a.
Shut down generator set.
b.
Open battery access door and disconnect negative battery cable.
c.
Open output box access door, tag and disconnect generator leads from voltage reconnection board (TB1), and
exciter field leads F1 and F2 from TB8.
d.
Remove generator leads and exciter leads from output box. Note routing of leads through transformers for correct
reinstallation.
e.
Remove generator set housing rear panel, paragraph 2-18.1.
f.
Loosen damp assembly (3, FIGURE 4-17) to allow slippage of generator leads.
g.
Remove bolts (1), lockwashers (2), damp assembly (3), and gasket (4) from end bell (16).
h.
Remove bolts (5), lockwashers (6), and cover plates (7) and (8) from end bell (16).
i.
Remove bolts (9), lockwashers (10), and air intake screens (11) and (12) from end bell (16).
CAUTION
The end bell supports the main rotor, thus the rotor will drop on the stator
once the end bell Is removed. Prior to proceeding, bar engine by using
center bolt on harmonic balancer, TM 92815-25624, until two main rotor
poles are vertical In generator stator. Having the rotor In this position will
limit the amount of drop, otherwise damage to rotor and/or stator could
occur.
j.
Remove bolts (13), lockwashers (14), and washers (15) securing end bell (16) to generator assembly.
k.
Remove end bell (16) from generator assembly with exciter stator (22) attached.
Change 2 4-35
