ARMY TM 9-6115-672-14
AIR FORCE TO 35C2-3-444-32
MARINE CORPS TM 09244A/09245A-14
5-50
5.10.3 Rotating Rectifier.
a. Testing.
(1)
Shut down generator set, paragraph 2.11.2. Allow generator to cool to ambient temperature.
(2)
Open BATTERY ACCESS door (Figure 1-2), and disconnect negative battery cable.
(3)
Remove rear housing panel. Refer to paragraph 4.7.5.
(4)
Remove end bell cover plates. Refer to paragraph 5.10.2.
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 9-2815-260-24.
(5)
Tag main rotor and diode leads, and remove nuts (1, Figure 5-11), lockwashers (15), and leads
from terminal bolts (2).
(6)
Tag exciter rotor leads, and remove bolts (3), washers (4), and leads from rectifier mounting
plate (13).
(7)
Set multimeter for ohms, and connect positive lead to one side and negative lead to other side of
each diode (7). Record multimeter reading for each diode.
(8)
Repeat step (7) with multimeter leads reversed.
(9)
Resistance (ohms) readings should show continuity in one direction and no continuity in
reversed direction. If readings show continuity or no continuity in both directions, diode is
defective and must be replaced.
(10) Install exciter rotor leads, washers (4), and bolts (3) on rectifier mounting plate (13). Remove
tags.
(11) Install diode and main rotor leads, lockwashers (15), and nuts (1) on rotating rectifier terminals.
(12) Install end bell cover plates. Refer to paragraph 5.10.2.
(13) Install rear housing panel. Refer to paragraph 4.7.5.
(14) Connect negative battery cable to battery, and close BATTERY ACCESS door.
b. Removal.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Open BATTERY ACCESS door (Figure 1-2), and disconnect negative battery cable.
(3)
Remove rear housing panel. Refer to paragraph 4.7.5.
(4)
Remove end bell and main bearing, paragraph 5.10.2.
