TM 9-2320-209-20-3-4 19-24. DUMP BODY SAFETY BRACE LOCKING AND UNLOCKING (TRUCK M342A2). TOOLS: None SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Locking. FRAME 1 1. Start engine and raise dump body (1). Refer to TM 9-2320-209-10. 2. Swing two hoist braces (2), one on each side, into upright position under dump body (1). 3. Lower dump body (1) onto hoist braces (2) and stop engine. Refer to TM 9-2320-209-10. END OF TASK 19-127