TM-9-2350-311-34-2
CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-2350-311-34-2 - Page 21 of 552
TM 9-2350-311-34-2
CHAPTER 1
INTRODUCTION
GENERA L
This chapter provides the maintenance mechanic with basic information on the M109 howitzer series’ primary armament,
elevating, traversing, and other cab-related components. This information is provided through a physical description of
major components, which the mechanic is required to maintain, service, inspect, replace, or repair.
Additional information is provided as reference and guidance on use of forms, maintenance of records, and filing of reports.
CONTENTS
Page
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
1-1 4
1-15
1-16
1-17
GENERAL INFORMATION
SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
MAINTENANCE FORMS, RECORDS, AND REPORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
PREPARATION FOR STORAGE OR SHIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
OFFICIAL NOMENCLATURE, NAMES, AND DESIGNATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR) . . . . . . . . . . . . . . . . . . . . 1-5
WARRANTY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
SAFETY, CARE, AND HANDLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
CORROSION PREVENTION AND CONTROL (CPC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
NUCLEAR HARDNESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
SECURITY MEASURES FOR ELECTRONIC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
EQUIPMENT DESCRIPTION AND DATA
EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES . . . . . . . . . . . . . . . . . . . . . . . . 1-8
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
DIFFERENCES BETWEEN MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
EQUIPMENT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39
EQUIPMENT CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41
1-1
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