TM 9-2320-361-10 2-5. BODY EQUIPMENT CONTROLS AND INDICATORS (Contd) d. Key 8 9 10 11 Dump Truck (M342A2). Item and Function Tailgate Hand Lever is pulled forward and down to open tailgate. Hydraulic Hoist Control Lever is moved forward to raise dump body, and backward to lower dump body. Safety Lock is turned to side position to secure control lever in back (down) position. Dump Body Safety Braces are raised to secure dump body in up position for maintenance. 2-15