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WINDSHIELD WIPERS AND WASHERS (cont)
FAN CLUTCH CONTROLS
TM-9-2320-273-20 Truck 6 Ton 6x6 M939 M939A1 and M939A2 (Diesel) Manual
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TM 9-2320-273-20
2-73. AIR HORNS.
1.
AIR HORNS. Air-powered signaling devices.
2.
CONTROL VALVE. Allows compressed air to flow to horns when lever is pulled downward.
3.
LEVER. Actuates control valve when pulled downward by chain in cab.
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