ARMY TM 9-6115-671-14
AIR FORCE TO 35C2-3-446-32
MARINE CORPS TM 09249A/09246A-14
4-85
4.8.5
ENGINE CONTROL Switch S1.
a. Inspection.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Release DCS control panel by turning two fasteners, and lower DCS control panel slowly.
(3)
Inspect ENGINE CONTROL switch (8, Figure 4-12) for loose connections and mounting hardware,
and other damage.
(4)
Raise and secure DCS control panel with two fasteners.
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)
Release DCS control panel by turning two fasteners, and lower DCS control panel slowly.
(4)
Tag and disconnect ENGINE CONTROL switch (8, Figure 4-12) electrical leads.
(5)
Set multimeter for ohms, and check switch for continuity. Refer to schematic, FO-1, to determine
circuits made to corresponding switch position.
(6)
Check continuity for all four positions.
(7)
If open circuit is noted at any switch position, switch is unserviceable and must be replaced.
(8)
Connect electrical leads to ENGINE CONTROL switch (8), and remove tags.
(9)
Raise and secure DCS control panel with two fasteners.
(10) Connect negative battery cable to battery, and close BATTERY ACCESS door.
c. Replacement.
(1)
Shut down generator set, paragraph 2.11.2.
(2)
Open BATTERY ACCESS door (Figure 1-2), and disconnect negative battery cable .
(3)
Release DCS control panel by turning two fasteners, and lower DCS control panel slowly.
(4)
Remove screw (4, Figure 4-12) and knob (5) from ENGINE CONTROL switch (8).
(5)
Tag and disconnect electrical leads from ENGINE CONTROL switch (8).
(6)
Remove nuts (6), screws (7), and ENGINE CONTROL switch (8) from DCS control panel.
(7)
Install ENGINE CONTROL switch (8), screws (7), and nuts (6) on DCS control panel.
(8)
Connect electrical leads to ENGINE CONTROL switch (8), and remove tags.
