TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311-20-1 CHAPTER 1 INTRODUCTION GENERAL This chapter provides information to familiarize the mechanic with the M109A2/M109A3/M109A4/M109A5 Medium, Self-Propelled Howitzers’ hull, powerplant, drive controls, tracks, suspension, and other hull-related components. The familiarization is provided through a physical description of major components that the mechanic at unit level is required to inspect, service, replace, or repair. CONTEN S T Section I 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 Section II 1-13 1-14 1-15 1-16 Section Ill 1-17 PAGE GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-5 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-5 MAINTENANCE FORMS, RECORDS, AND REPORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-5 DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE . . . . . . . . . . . . . . . . . . . . . . . ...1-5 PREPARATION FOR SHIPMENT AND STORAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-6 QUALITY ASSURANCE (QA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....1-6 OFFICIAL NOMENCLATURE, NAMES, AND DESIGNATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-6 REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIRs) . . . . . . . . . . . . . . . . . . . . 1-7 WARRANTY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-7 SAFETY, CARE, AND HANDLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......1-7 CORROSION PREVENTION AND CONTROL (CPC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-8 NUCLEAR HARDNESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-9 SECURITY MEASURES FOR ELECTRONIC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-9 EQUIPMENT DESCRIPTION AND DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-9 CAPABILITIES AND FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-9 LOCATION OF MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-10 DIFFERENCES BETWEEN MODELS.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-14 EQUIPMENT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-15 PRINCIPLES OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-17 EQUIPMENT OPERATION AND DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-18 1-1