TM 9-2320-209-34-2-2 17-44. EARTH BORING MACHINE OPERATOR’S SEAT REMOVAL, REPAIR AND REPLACEMENT (TRUCK M764). TOOLS: No special tools required SUPPLIES: Cotter pin PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake a. Removal. set. 1. Take out pin (1). 2. Take out locking pin (2). 3. Take seat assembly (3) off truck. END OF TASK 17-472