TM-9-2350-247-10 Operator Manual M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-10 THEORY OF OPERATION — Continued 0003 00 FUEL CUTOFF CONTROL To start fuel flowing to the engine, push the fuel cutoff control all the way in. To stop fuel flow to the engine, pull the fuel cutoff control all the way out. This will shut down the engine when it is running. HAND THROTTLE CONTROL The hand throttle control is used to set the engine speed for various reasons. To set the engine speed, while pushing down the accelerator pedal, pull hand throttle control out until desired rpm is indicated by tachometer. Turn the hand throttle control clockwise to lock the control and counterclockwise to release the control. Once the hand throttle control is set, the engine will maintain the set speed without holding down the accelerator pedal. MAIN LIGHT SWITCH The main light switch is used to control all of the exterior lights and the instrument panel lights. To select lights, push up and hold the UNLOCK lever before moving desired lever to the position wanted. Refer to Operate Carrier Lights (WP 0032 00). AIR CLEANER INDICATOR The air cleaner indicator indicates if the air cleaner is operating properly or is plugged. When the air cleaner indicator is red, the air cleaner is plugged and needs cleaning. Press rubber dome to reset air cleaner indicator after air cleaner has been replaced or cleaned. WINCH The winch is for self-recovery or to recover another vehicle. For operation of winch, refer to WP 0030 00. FIXED FIRE EXTINGUISHER Refer to WP 0033 00 for operation of the fixed fire extinguisher. BATTERY GENERATOR GAUGE The battery generator gauge has the color red repeated. The first (left to right) red position indicates the batteries are dead (no power). The second red position indicates the batteries are being overcharged and could possibly blow up. During normal operation, the gauge should be in the green position. Refer to WP 0018 00 for other colors. TACHOMETER GAUGE The tachometer indicates engine speed and hours of operation. To read engine speed (RPM), multiply the large numbers on the gauge by 100, or add two zeros to number. GENERAL INFORMATION: M548A3 The M548A3, 6–ton tracked cargo carrier is powered by a turbocharged, liquid cooled 6V53, 275 horsepower diesel engine. The engine power is converted to mechanical power and transferred to the carrier tracks and through a hydro-mechanical cross drive transmission and final drives. The engine, transmission, steering system, and braking system are driver controlled. Engine startup and shutdown are controlled by electrical signals and mechanical linkages connected to the accelerator pedal, the fuel shutoff cable, and the hand throttle cable. Steering and braking are controlled through linkages connected to the transmission. The hand brake is hand controlled with assistance from pressing on the brake pedal. 0003 00-2