TM 9-2320-209-34-2-2 17-45. EARTH BORING MACHINE ASSEMBLY REMOVAL AND REPLACEMENT. TOOLS: No special tools required SUPPLIES: Wood blocks PERSONNEL: T WO EQUIPMENT CONDITION: Truck parked, engine off, handbrake set. a. Preliminary Procedures. (1) Remove derrick tube assembly. Refer to para 17-56. (2) Remove auger rack bar. Refer to para 17-56. (3) Remove outrigger pump drive shaft. Refer to TM 9-2320-209-20. (4) Drain oil from supporting tube. Refer to LO 9-2320-209-12/1. b. Removal. FRAME 1 1. Take out four nuts (1) and screws (2). 2. Lower rear end of propeller shaft (3). GO TO FRAME 2 17-479