ARMY TM 9-6115-671-14
AIR FORCE TO 35C2-3-446-32
MARINE CORPS TM 09249A/09246A-14
4-118
(8)
Install DCS control box top panel, paragraph 4.7.2.
(9)
Connect negative battery cable to battery, and close BATTERY ACCESS door.
4.8.27 FREQUENCY SELECT Switch S12.
a. Inspection.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Remove DCS control box top panel, paragraph 4.7.2.
(3)
Inspect FREQUENCY SELECT switch (6, 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)
Remove FREQUENCY SELECT switch. Refer to paragraph 4.8.27.c.
(5)
Set multimeter for ohms, and connect across switch terminals.
(6)
Place FREQUENCY SELECT switch (6) in UP (60 Hz) position. Multimeter should indicate
continuity.
(7)
Place FREQUENCY SELECT switch (6) in DOWN (50 Hz) position. Multimeter should indicate
open circuit.
(8)
If indications are other than above, FREQUENCY SELECT switch (6) is defective and must be
replaced.
(9)
Install FREQUENCY SELECT switch. Refer to paragraph 4.8.27.c.
(10) Install DCS control box top panel, paragraph 4.7.2.
(11) Connect negative battery cable to battery, and close BATTERY ACCESS door.
