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ELECTRICAL SWITCHES REPLACEMENT
MAIN LIGHT SWITCH REPLACEMENT

TM-9-2320-272-24-1 Truck 5-Ton 6x6 M939 M939A1 M939A2 Series Trucks (Diesel) Manual
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TM 9-2320-272-24-1
3-107. ELECTRICAL SWITCHES REPLACEMENT (Contd)
2.
Remove nut (22) and lockwasher (19) from instrument cluster (21) and pull switch (20) from behind
instrument cluster (21).
NOTE
Tag wires for installation.
3.
Disconnect wires (25), (26), (27), and (28) and remove battery switch (20) from instrument
cluster (21).
NOTE
If new switch is being installed, use mounting hardware supplied
with switch, Starter switch has only three wires.
1.
Connect wires (28),(27), (26), and (25) to battery switch (20).
2.
Position battery switch (20) through instrument cluster (21) from the rear and install with new
lockwasher (19) and nut (22).
3.
Position washer (18), felt washer (17), and switch lever (16) on battery switch (20) and install with
new lockwasher (23) and screw (24).
FOLLOW-ON TASK: Connect battery ground cables (para. 3-126).
3-293






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