E-3. SIGN GUIDE (Contd) TM 9-2320-361-10 i. Location of Earth Boring and Polesetting Maintenance Truck Warning, Caution. and Data Plates (Contd). KEY ITEM APPLlCABLE 10 Bumper spring/auger caution plate M764 11 Power leveler data plate M764 12 Boring machine operation data plate M764 11 Rack bar data plate M 764 14 Boring machine levers lock warning plate M764 15 Outrigger taut ion plate M764 16 Outrigger controls data plate M764 17 Hearing protect ion warning plate M764 18 Winch capacity caution plate M764 E-13 MODELS