ARMY TM 9-6115-643-24
AIR FORCE TO 35C2-3-445-22
b. Open battery access door and disconnect negative battery cable.
c. Release control panel by turning two fasteners and lower control panel slowly.
d. Tag and disconnect permissive paralleling relay (49, FIGURE 2-14) electrical leads.
e. Remove screws (48) and permissive paralleling relay (49).
2.56.4.
Installation.
a. Install permissive paralleling relay (49, FIGURE 2-14) with screws (48).
b. Connect all electrical leads and remove tags.
c. Raise and secure control panel.
d. Connect negative battery cable. Close battery access door.
2.57. REVERSE POWER RELAY.
2.57.1.
lnspection.
a. Shut down generator set.
b. Inspect relay for cracked casing, burned or broken terminals, and other damage.
2.57.2.
Testing.
a. Shut down generator set.
b. Open battery access door and disconnect negative battery cable.
c. Release control panel by turning two fasteners and lower control panel slowly.
d. Disconnect and insulate wires 158B and 158C from terminal 1, and 161A and 161B from terminal 2 of reverse power
relay.
e. Mark a 5,000 ohm potentiometer as follows:
Center terminal. C
Two outside
terminals = L and R
CAUTION
Voltage polarity is very important to prevent damage to generator set.
f. Set up a test circuit as shown in FIGURE 2-16. Connect 24 VDC source to terminals L and R of potentiometer.
Connect a wire between terminal C of potentiometer and terminal 1 of reverse power relay. Connect a second wire
between terminal R of potentiometer and terminal 2 of reverse power relay. Set multi- meter for DC volts and con-
nect positive lead of multimeter to terminal 1 and negative lead to terminal 2 of reverse power relay.
2-90
