ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
2-47. MASTER SWITCH.
2-47-1.
a.
b.
c.
d.
2-47-2.
a.
b.
c.
d.
e.
f.
9.
h.
i.
i.
2-47-3.
a.
b.
c.
d.
e.
f.
9
2-47-4.
a.
b.
c.
d.
e.
f.
Inspection.
Shut down generator set.
Release control panel by turning two fasteners and lower control panel slowly.
Inspect MASTER SWITCH for loose connections and mounting, corrosion, and other damage.
Raise and secure control panel.
Testing.
Shut down generator set.
Open left side engine access door and disconnect negative battery cable.
Release control panel by turning two fasteners and lower control panel slowly.
Tag and disconnect MASTER SWITCH (42, Figure 2-14) electrical leads.
Check switch for continuity using multimeter. Refer to Electrical Schematic FO-1 (S-1 Circuit Schedule) to
determine circuits made to corresponding switch positions.
Check continuity until all five positions have been checked.
If open circuit is noted in any switch position, switch is unserviceable and must be replaced.
Connect electrical leads to MASTER SWITCH (42) and remove tags.
Raise and secure control panel.
Connect negative battery cable and close access door.
Removal.
Shut down generator set.
Open left side engine access door and disconnect negative battery cable.
Release control panel by turning two fasteners and lower control panel slowly.
Tag and disconnect MASTER SWITCH (42, Figure 2-14) electrical leads.
Loosen setscrew (38) and remove knob (39).
Remove screws (40) and nuts (41).
Remove MASTER SWITCH (42) from control panel.
Installation.
Insert MASTER SWITCH (42, Figure 2-14) into control panel.
Install screws (40) and nuts (41).
Install knob (39) and tighten setscrew (38).
Connect electrical leads and remove tags.
Raise and secure control panel.
Connect negative battery cable and close access door.
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