TM-9-2320-272-10
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; OPERATOR'S MANUAL
SEPTEMBER 2004
CHANGE 2
TM-9-2320-272-10 - Page 3 of 481
TM 9-2320-272-10
Warning b
Change 2
• If Nuclear, Biological, or Chemical (NBC) exposure is suspected, all air filter media
should be handled by personnel wearing protective equipment. Consult your unit
NBC officer or NBC NCO for appropriate handling or disposal instructions.
• Extreme care should be taken when removing surge tank filler cap if temperature
gauge reads above 175°F (79°C). Steam or hot coolant under pressure will cause
injury.
• Pump brakes gradually when slowing or stopping vehicle on ice, snow, or wet
pavement. Sudden stop will cause vehicle wheels to lock, engine to stall, and loss of
power steering. Failure to do this will result in injury or death.
• Ground spike must be driven into ground 18-24 inches (46-61 centimeters) and
spike cable connected to the chassis before power can be taken from outside source.
Failure to do this will result in electrical damage, injury, or death.
• Ensure spike cable ring terminal makes good contact with bare metal. If necessary,
scrape contact area clean of dirt, paint, or rust. Failure to do this will result in
electrical damage, injury, or death.
• Vehicle will become charged with electricity if A-frame contacts or breaks high
voltage wire. Do not leave vehicle while high voltage line is in contact with A-frame
or vehicle. Failure to do this will result in injury or death. Notify nearby personnel
to have electrical power turned off.
• Do not put vehicle in motion until warning light is extinguished, and alarm (buzzer)
stops sounding. If air pressure gauges indicate less than 90 psi (621 kPa), turn
ignition and battery switches to OFF positions, and notify unit maintenance.
Failure to do this will result in injury or death.
• Alcohol used in alcohol evaporator is flammable, poisonous, and explosive. Do not
smoke when adding fluid and do not drink fluid. Failure to do this will result in
injury or death.
• Stay clear of dump body and cab protector at all times during loading and
unloading operations. Dump body can unexpectedly raise when a heavy load is
dropped into dump body and will cause injury or death.
• Do not smoke, have open flames, or make sparks around the batteries, especially if
the caps are off. They can explode and cause injury or death.
• Do not lower load without a ground guide. Direct all personnel to stand clear of
lifting operations. Swinging loads will cause injury or death.
• Do not perform fuel system checks or inspection while smoking or near fire, flames,
or sparks. Fuel could ignite, causing damage to vehicle, injury, or death.
• This vehicle has been designed to operate safely and efficiently within the limits
specified in this TM. Operation beyond these limits is prohibited IAW AR 70-1
without written approval from the Commander, U.S. Army Tank-automotive and
Armaments Command, ATTN: AMCPEO-CM-S, Warren, MI 48397-5000.
• Block vehicle wheels if operating site is on a grade, no matter how slight. Failure to
do this will result in injury or death.
WARNING SUMMARY
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