ARMY TM 9-6115-24
AIR FORCE TO 35C2-344-12
MARINE CORPS TM 09244A/09245A-24/2
y.
Remove caps and connect fuel line (1) to auxiliary fuel pump fitting (2).
z.
Remove caps and connect fuel filler panel assembly (5) to fuel tank and tighten damp (6).
aa. Remove caps and connect hose (4) to fuel filler panel assembly (5) and attach clamp (3).
ab. Install air cleaner assembly (7, FIGURE 4-12) in generator set with bolts (3), washers (4), lockwashers (5), and
nuts (6).
ac. Connect hose (2) to air cleaner assembly (7) and tighten damp (1).
ad. Install rear housing panel (8, FIGURE 4-11) on generator set with bolts (1) and (4), washers (3) and (5), lock-
washers (2) and (6), and nuts (7).
ae. Install control box assembly, paragraph 2-19.4.
af. Connect negative battery cable and dose all access doors.
ag. Start generator set and check for proper operation.
4-18
ROTATING RECTIFIER DIODES.
4-18.1
Testing.
a.
Shut down generator set. Allow generator to cool to ambient temperature.
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 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.
Remove nuts (1, FIGURE 4-16) from rotating rectifier terminal bolts (2).
f.
Tag and remove main rotor and diode leads from rotating rectifier terminal bolts.
g.
Tag exciter rotor leads and remove bolts (3), washers (4), and exciter rotor leads from rectifier mounting plate
assemblies.
h.
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.
i.
Repeat step h., with multimeter leads reversed.
NOTE
If diode (s) (7) are found to be defective, inspect suppressor diode (10, Figure 4-16) for discoloration
or signs of burning. Replace suppressor diode if these conditions exist (Refer to paragraph 4-19.1,
Rotating Rectifier Removal).
j.
Resistance (ohms) readings should be low in one direction and high in reversed direction. If readings are high or
low in both directions, diode is defective and must be replaced.
k..
Install diode and main rotor leads to rotating rectifier terminal bolts (2) with nuts (1).
Remove tags.
I.
Install exciter rotor leads to rectifier mounting plate assemblies with washers (4) and bolts (3). Remove tags.
m. Install generator end bell cover plates, paragraph 4-19.2, step h.
n.
Install generator set housing rear panel, paragraph 2-18.4.
o.
Connect negative battery cable and dose battery access door.
Change 2 4-33
