TM 9-2320-361-10 2-32. OPERATION OF EARTH BORING AND POLESETTING MAINTENANCE TRUCKS WARNING Hearing protection must be worn when using earth boring machine or rear winch, or injury to personnel may result. a. General. M764 earth boring machine and polesetter trucks are equipped with a rear cart h 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 Truck for Boring operation. (1) Start engine (refer to para. 2-14 or 2-15) and place truck so rack bar (10) is directly over hole location when in boring position. (2) Depress clutch pedal (16), place transmission gearshift lever (9) in “N” (neutral) position, release clutch pedal (16) and apply parking brake lever (14). (3) Set wheel chocks (11) behind rear wheels. (4) Depress clutch pedal (16), place transfer case shift lever (13) in neutral and transmission gearshift lever (9) in “1” (first) position. (5) Engage transfer power takeoff lever (15), place power divider control lever (12) in EARTH AUGER position, and slowly release clutch pedal (16). 2-159