SECTION II: EQUIPMENT DESCRIPTION AND DATATM 9-2350-256-20Racks, boxes, brackets, hangers, and straps are installed and conveniently located in and on the hull and cab.They provide stowage and supply facilities for various vehicular equipment such as water cans, tools, parts,wheels, sprockets, tarpaulins, track-connecting tools, and tow cables.1 - 9 L O C A T I O N A N D D E S C R I P T I O N O F M A J O R C O M P O N E N T SThe components of the M88A1 that are essential to the operation and maintenance of the vehicle are shown inFigures 1-1 through 1-4a. EXTERNAL COMPONENTS1 Hoisting boom-a pivot-mounted, tubular A-framewhich is raised or lowered by two hydraulicallyoperated cylinders and supported by a stayline cable2 Stowage doors-provide right- and left-side access3 Auxiliary Power Unit (APU) door-provides exterioraccess to AUP4 Rigger’s door-provides access from cab top; visionprisms located below door on hull rear5 Personnel doors-provide right- and left-side accessto cab6 Commander’s vision cupola-provides access andvision from cab top7 Caliber 50 machine gun-an automatic, recoil-operated, linkbelt-fed, air-cooled, heavy-barrel typefor Commander’s use8 Mechanic’s door-provides access from right side ofcab top; vision prisms located below door9 Driver’s door-provides access from left side of cabtop; vision prisms located below door10 M239 smoke grenade launcher-includes two smokegrenade discharges, covers, and push button firingswitch box11 Spade-mounted to vehicle nosepiece by twotrunnion-mounted arms; hydraulically activated12 Tracks and suspension-includes transverse torsion-bar type suspension which, by means of individuallysuspended roadwheels that are supported by supportarms splined to torsion bars, gives optimum ridingcharacteristics over all types of terrain 13 Engine deck-rear top cover for engine/transmissionFigure 1-1. External Components.Change 1 1-3
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