TM9-2320-361-10 Section Ill. TECHNICAL PRINCIPLES OF OPERATION 1-29. GENERAL This section explains how controls and indicators in the cab of M44A2 series vehicles relate to the operation of vehicle equipment. To find a specific system operation, refer to the index below: 1-30. TECHNICAL PRINCIPLES OF OPERATION INDEX PARA PARA. TITLE PAGE NO. 1-31. Air-Hydraulic Brake System Operation 1-24 1-32. Front Winch System Operation 1-25 1-33. Fuel System Operation 1-26 1-34. Lighting System Operation 1-27 1-23