TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P CHAPTER 1 INTRODUCTION Section I. 1-1. 1-2. 1-3. 1-4. 1-4.1 Section II. 1-5. 1-6. 1-7. 1-8. 1-9. Section Ill. CHAPTER INDEX Page GENERAL INFORMATION....................................................................................... 1-1 SCOPE .......................................................................................................................... 1-1 MAINTENANCE FORMS, RECORDS, AND REPORTS ............................................................. 1-1 OFFICIAL NOMENCLATURE, NAMES, AND DESIGNATIONS ................................................. 1-1 REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR’s) ............................ 1-2 CORROSION PREVENTION AND CONTROL (CPC) ............................................................ 1-2 EQUIPMENT DESCRIPTION AND DATA ........................................................................... 1-2 EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS.. ................................................ 1-18 DATA PLATES ................................................................................................................ 1-19 DIFFERENCES BETWEEN MODELS ..................................................................................... 1-21 EQUIPMENT DATA ............................................................................................................ 1-22 PRINCIPLES OF OPERATION ......................................................................................... 1-24 Section I. General Information 1-1. SCOPE Type of manual: Direct and general support maintenance. Model numbers and equipment name: M146 telescope mount, M118A2/M118A3 elbow telescope, M145/M145A1 telescope mount, M117/M117A2 panoramic telescope, M15 fire control quadrant, M42 periscope, and linkage assembly. Purpose of equipment: Used on the M109A2/M109A3/M109A4/M109A5/M109A6 howitzer to provide sighting and targeting capabilities. 1-2. MAINTENANCE FORMS, RECORDS, AND REPORTS Department of the Army forms and procedures used for equipment maintenance will be prescribed by DA PAM 738-750, The Army Maintenance Management System (TAMMS). 1-3. OFFICIAL NOMENCLATURE, NAMES, AND DESIGNATIONS OFFICIAL NOMENCLATURE COMMON NAME Howitzer, medium, self-propelled 155mm, M109A2/M109A3/M109A4/M109A5/M109A6 Howitzer M42 tank periscope O-ring Quadrant, fire control, M15 M15 quadrant M42 periscope Preformed packing Wormshaft housing Cross-level mechanism Change 1 1-1