TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
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TM 9-2350-311-34-2 1-14 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - CONTINUED 1-14.8 Location and Description of Main Accumulator Assembly The main accumulator assembly (1), mounted at the right rear of cab, consists of a sealed cylinder (2) housing a floating piston (3). The top end of the cylinder contains a gas valve (4), while the bottom end has a central port (5) and a side port (6). The central port at the bottom end is connected to a relief valve and power pack assembly pressure regulator valve. The side port is connected to a pressure gage and pressure switch. The top of the cylinder is precharged with dry nitrogen under pressure. Pressure is applied against hydraulic fluid at the bottom of the cylinder. Dry nitrogen and hydraulic fluid are sepa- rated by a floating piston. Pressurized hydraulic fluid is supplied to the main accumulator assembly by a hydraulic pump located in the power pack assembly reservoir. 1-26