ARMY TM 9-6115-645-24
AIR FORCE TO 35C2-3-444-12
MARINE CORPS TM 09244A/09245A-24/2
CAUTION
If bearing needs to be removed for any reason, always Install new bearing. Main bearing
Is easily damaged when removed from rotor shaft Damage to equipment could result
I.
Using bearing puller, remove bearing (17) from main rotor assembly (23) shaft and discard bearing.
4-19.2. Installation.
CAUTION
If bearing needs to be removed for any reason, always Install new bearing. Main bearing Is easily
damaged when removed from rotor shaft Damage to equipment could result.
a.
Install bearing (17, FIGURE 4-17) on main rotor assembly (23) shaft.
Ensure that bearing is seated squarely
against shaft shoulder by applying pressure to inner race only.
b.
Position bearing (17) in end bell (16).
NOTE
It may be necessary to use a lifting device to raise and align end bell (16) with generator housing.
c.
Position end bell (16), with exciter stator (22) attached, over generator leads and on generator housing while
pulling slack of generator leads through opening in end bell. Secure end bell (16) with bolts (13), lockwashers
(14), and washers (15). Torque bolts (13) to 25 ft-lbs (34 Nm).
d.
Insert generator leads through gasket (4) and damp (3).
e.
Install damp (3) and gasket (4) on end bell (16) with bolts (1) and lockwashers (2).
f.
Tighten damp assembly (3) ensuring that generator leads are clamped securely.
g.
Install air intake screens (11) and (12) on end bell (16) with bolts (9) and lockwashers (10).
h.
Install cover plates (7) and (8) on end bell (16) with bolts (5) and lockwashers (6).
i.
Position generator leads and exciter leads in output box ensuring correct routing of leads through transformers as
noted on removal.
j.
Connect exciter leads F1 and F2 to TB8 and generator leads to voltage reconnection terminal board TB1. Re-
move tags and dose output box access door.
k.
Install generator set housing rear panel, paragraph 2-18.4.
I.
Connect negative battery cable. Close battery access door.
4-20
ROTATING RECTIFIER.
4-20.1. 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 and main bearing, paragraph 4-19.1 (disconnecting generator leads and exciter
leads not required).
e.
Remove bolts (3, FIGURE 4-16) and lockwashers (4) securing exciter rotor leads (3 places) to rotating rectifier.
Tag and remove exciter rotor leads.
f.
Remove nuts (1) from terminal bolts (2), tag and remove main rotor leads and rotating rectifier diode leads.
g.
Remove bolts (18, FIGURE 4-17), lockwashers (19) and rotating rectifier (20) from rotor assembly (23).
h.
Remove nut (8, FIGURE 4-16), lockwasher (9), and suppressor diode (10) from insulating plate (14).
i.
If necessary, remove bolts (11), lockwashers (12), and diode mounting plates (13) from insulating plate (14).
4-36 Change 2
