TM 9-2320-209-10-1 4-15. OPERATION OF EARTH BORING MACHINE AND POLESETTER TRUCKS. a. General. M764 earth boring machine and polesetter trucks are equipped with a rear earth boring machine, rear winch, and collapsible cable reel. The rear winch is used with the earth boring machine derrick to set and pull poles, and with collapsible cable reel to take up or lay wire and light cable. b. Preparing the Truck for Boring Operation. 1. Start engine. (Refer to para 4-6b.) 2. Place truck so rack bar (1) will be directly over hole location when in boring position. 3. Press clutch pedal (2) down. 4. Place FRONT TRANSMISSION gear shift lever (3) in N position. Let clutch pedal (2) up slowly. 5. Pull handbrake (4) up to on position. 6. Take wheel chocks (5) from side of truck and place them against rear wheels. GO TO FRAME 2 4-311