ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
2-33. RELAYS.
2-33-1. Inspection.
a.
Shut down generator set.
b.
Release control panel by turning two fasteners and lower control panel slowly.
c.
Inspect relays for cracks, loose mounting, and other damage.
d.
Raise and secure control panel.
2-33-2. Testing.
a.
b.
c.
d.
e.
f.
g.
h.
Shut down generator set.
Release control panel by turning two fasteners and lower control panel slowly.
Remove applicable relay, paragraph 2-33-3.
Set multimeter for ohms and check for open circuits between terminals 7 and 4, 8 and 5, and 9 and 6. Check
for closed circuits between terminals 7 and 1, 8 and 2, and 9 and 3.
Connect 24 VDC source to terminals A and B, and listen for audible actuation of relay. Set multimeter for ohms
and check for open circuits between terminals 7 and 1, 8 and 2, and 9 and 3. Check for closed circuits between
terminals 7 and 4, 8 and 5, and 9 and 6.
If indications are other than above, relay is defective and must be replaced.
Install relay, paragraph 2-33-4.
Raise and secure control panel.
2-33-3. Removal.
a.
Shut down generator set.
b. Open left side engine access door and disconnect negative battery cable.
c.
Release control panel by turning two fasteners and lower control panel slowly.
d.
Locate suspected defective relay (37, Figure 2-11). Release wire clip (36) and remove relay (37) by gently pull-
ing up on relay.
2-33-4 Installation.
a.
Install relay (37, Figure 2-11) and secure with wire clip (36).
b. Raise and secure control panel.
c.
Connect negative battery cable and close access door.
2-34.
RESISTOR - DIODE ASSEMBLY.
a.
Shut down generator set.
b.
Release control panel by turning two fasteners and lower control panel slowly.
c.
Inspect resistor-diode assembly for cracks, breaks, corrosion, bent terminals, and other damage.
d.
Raise and secure control panel.
2-62
2-34-1. Inspection.
