ARMY TM 9-6115-644-24
AIR FORCE TO 35C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
2-34-1
a.
b.
2-34-2
a.
b.
c.
d.
e.
f.
9.
2-34-3
a.
b.
c.
d.
e.
f.
g.
h.
2-34-4
a.
b.
c.
d.
e.
2-66
Inspection.
Shut down generator set.
Inspect potentiometer for loose connections and mounting, and other damage.
Removal.
Shut down generator set.
Open battery access door and disconnect negative battery cable.
Release control panel by turning two fasteners and lower control panel slowly.
Tag and disconnect VOLTAGE adjust potentiometer (14, FIGURE 2-13) electrical leads using soldering gun.
Remove shrinkable tubing.
Remove setscrews (10) and knob (11).
Remove nut (12) and washer (13).
Remove VOLTAGE adjust potentiometer (14) from control panel.
Testing.
Remove VOLTAGE adjust potentiometer, paragraph 2-34-2.
Set multimeter for ohms and connect across two outer terminals of potentiometer. Indication shall be:
10,000 ohms (Part number RV4NAYSD103 A instaIled).
20,000 ohms (Part number RV4NAYSD203A installed).
Rotate potentiometer shaft counterclockwise as far as it will go.
Connect multimeter between center terminal and either outer terminal.
Slowly, at an even rate, rotate potentiometer shaft clockwise as far as it will go while observing multimeter.
Multimeter indication shall increase, at an even rate, as follows:
0 to 10,000 ohms (Part number RV4NAYSD103A installed).
0 to 20,000 ohms (Part number RV4NAYSD203A installed).
If multimeter indication changes erratically or is not at maximum ohms when rotation is complete, the potentiom-
eter is defective and must be replaced.
Install VOLTAGE adjust potentiometer, paragraph 2-34-4.
InstaIlation.
Insert VOLTAGE adjust potentiometer (14, FIGURE 2-13) into control paneI.
Install washer (13) and nut (12).
Install knob (11s) and setscrews (10).
Install new shrinkable tubing and connect electrical leads using soldering gun. Remove tags.
Raise and secure control panel.
