TM 9-2320-386-10 2-8 2-3. CHASSIS CONTROLS AND INDICATORS (Contd) Key Item and Function 1 Hood latch secures hood in closed position. 2 Hood holddown latches are used with hood latch to secure hood in closed position. 3 Trailer power outlet receptacle provides electric power for trailer. 4 Towing pintle hook is opened to attach trailer towing bar. Key Item and Function 5 Oil fill tube is opened to fill engine crankcase. 6 Oil dipstick tube is removed to check engine oil level. 7 Transmission fill tube is opened to fill transmission oil level. 8 Transmission dipstick tube is removed to check transmission oil level. 1 2 3 4 7 8 5 6