ARMY TM 9-6115-671-14
AIR FORCE TO 35C2-3-446-32
MARINE CORPS TM 09249A/09246A-14
4-121
a. Inspection.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Remove DCS control box top panel, paragraph 4.7.2.
(3)
Inspect REACTIVE CURRENT ADJUST rheostat (8, Figure 4-16) for loose connections and
mounting hardware, and other damage.
(4)
Install DCS control box top panel, paragraph 4.7.2.
b. Testing.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Open BATTERY ACCESS door (Figure 1-2), and disconnect negative battery cable.
(3)
Remove DCS control box top panel, paragraph 4.7.2.
(4)
Desolder wires 236A, 236B, and 236C. Refer to wiring diagram FO-3.
(5)
Mark reading of REACTIVE CURRENT ADJUST rheostat (8, Figure 4-16) to reposition at
conclusion of testing steps.
(6)
Set multimeter for ohms, and connect to wires 236B and 236A. Multimeter reading should be
between 4.5 and 5.5 ohms.
(7)
Connect multimeter to wires 236A and 236C, and turn REACTIVE CURRENT ADJUST rheostat
(8) to full clockwise position. Multimeter reading should be approximately 0 ohms. Turn
REACTIVE CURRENT ADJUST rheostat slowly to full counterclockwise position, and observe
multimeter. Multimeter reading should evenly increase up to between 4.5 and 5.5 ohms.
(8)
Connect multimeter to wires 236B and 236C, and turn REACTIVE CURRENT ADJUST rheostat
(8) to full clockwise position. Multimeter reading should be between 4.5 and 5.5 ohms. Turn
REACTIVE CURRENT ADJUST rheostat slowly to full counterclockwise position, and observe
multimeter. Multimeter reading should evenly decrease to approximately 0 ohms.
(9)
If multimeter readings are other than above, replace REACTIVE CURRENT ADJUST rheostat (8).
(10) Reposition REACTIVE CURRENT ADJUST rheostat (8) as marked in step (5).
(11) Solder wires 236A, 236B, and 236C.
(12) Install DCS control box top panel, paragraph 4.7.2.
(13) Connect negative battery cable to battery, and close BATTERY ACCESS door.
