TM 9-2350-238-10OPERATION OF AUXILIARY EQUIPMENTMake sure you know proper procedures andprecautions before attempting to operate aux-iliary equipment on M578 recovery vehicle.The following pages provide operating instruc-tions for machine gun mount, caliber .50machine gun, fixed fire extinguisher, portablefire extinguisher, gas-particulate filter unit,and communications equipment.CALIBER .50 MACHINE GUN MOUNTNOMENCLATURE1234567AMMUNITION TRAY. Tray holds the am-munition box from which ammunition isfed into machine gun. The tray has ahinged, spring-loaded arm that holds am-munition in box when machine gun iselevated.EQUILIBRATOR ADJUSTING SCREW.Screw provides adjustment forequilibrator spring and cap that holdsmachine gun in a horizontal position.CRADLE. Cradle supports machine gun inmount.FRONT LOCKING PIN. Pin securesmachine gun to cradle.TRAVEL LOCK PIN. Pin secures cradle ina horizontal position.PINTLE. Pintle secures mount on mountsupport of the rigger/gunner’s cupola.REAR LOCKING PIN. Pin securesmachine gun to cradle.OPERATING CALIBER .50 MA CHINE GUNMOUNT1 Install mount on vehicle by loosening gunlock clamp (1) and inserting mount pintle(2) into mount support (3). Tighten gunlock clamp (1).2-92
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