LOCATION AND DESCRIPTION OF MAJOR COMPONENTS AND SYSTEMS (CONTINUED)

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS AND SYSTEMS (CONTINUED) - TM-9-2350-267-20_44

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS AND SYSTEMS (CONTINUED) - TM-9-2350-267-20_46

TM-9-2350-267-20 Carrier Ammunition Tracked M992 (2350-01-110-4660) Manual
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LOCATION AND DESCRIPTION OF MAJOR COMPONENTS AND SYSTEMS (CONTINUED) HYDRAULIC SYSTEM (PRIMARY AND BACKUP) The hydraulic system is used to operate the upper rear door, stacker and conveyor. The APU is used to drive the primary hydraulic pump for system operation. The primary hydraulic pump is capable of delivering 4.5 gallons per minute of flow at a system pressure of 1550 psi. Hydraulic fluid is pumped from the 13-gallon capacity hydraulic fluid reservoir to the hydraulic control panel. The hydraulic control panel assembly contains three elec- tromechanically activated directional control valves used to route hydraulic fluid to the system to be operated. The upper directional control valve controls the action of the upper rear door actuator, ex- tending or retracting the actuator to open or close the upper rear door. The center directional control valve controls the stacker tray up-and-down movement. The lower directional control valve con- trols the action of the conveyor motor for forward or reverse travel of the conveyor. The hydraulic control panel also incorporates a pressure gage which indicates primary or backup system pressure. The conveyor control switch actuates the conveyor solenoid at the conveyor control valve. The rear door switches are located at the upper and lower left areas of the rear door opening. The stacker tray control switch is located on the stacker. If there is a failure of the primary hydraulic system, the system can be operated by switching to the backup system. TA312055 1-19 Change 1 TM 9-2350-267-20

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