40 MM Antiaircraft Gun -TM 9-1252

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40 MM Antiaircraft Gun -TM 9-1252 http://www.hnsa.org/doc/boforstm/index.htm Folks, 40 MM Antiaircraft Gun,TM 9-1252, 1951, is an Army service manual for this widely used anti-aircraft gun of WW II. We offer this manual on the HNSA web site because it covers the single 40mm mount M3 used on many small ships. Note that the M1 gun is the same as found in the double and quad mount manuals also on this site. Only the first 215 pages have been replicated here. The trailer and the armored mount are
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  Folks, 40 MM Antiaircraft Gun ,TM 9-1252, 1951, is an Army service manual for this widely usedanti-aircraft gun of WW II. We offer this manual on the HNSA web site because it covers thesingle 40mm mount M3 used on many small ships. Note that the M1 gun is the same as foundin the double and quad mount manuals also on this site. Only the first 215 pages have beenreplicated here. The trailer and the armored mount are not included.In this online version of the manual we have attempted to keep the flavor of the srcinallayout while taking advantage of the Web's universal accessibility. Different browsers andfonts will cause the text to move, but the text will remain roughly where it is in the srcinalmanual. In addition to errors we have attempted to preserve from the srcinal this text wascaptured by optical character recognition. This process creates errors that are compoundedwhile encoding for the Web.Please report any typos, or particularly annoying layout issues with theHNSA Feedback Formfor correction.Richard PekelneyWebmaster  Search HNSA.ORG   40 MM Antiaircraft Gun -TM 9-1252http://www.hnsa.org/doc/boforstm/index.htm  WARNINGAuthority for release of this document to a foreign government must be securedfrom the Assistant Chief of Staff, G-2.When this document is released to a foreign government, it is released subject tothe following conditions: This information is furnished with the understanding thatit will not be released to another nation without specific approval of the UnitedStates of America, Department of the Army; that it will not be used for other thanmilitary purposes; that individual or corporation rights srcinating in theinformation whether patented or not will be respected; and that the informationwill be afforded substantially the same degree of security as afforded by the UnitedStates of America, Department of the Army. RESTRICTED  DEPARTMENT OF THE ARMY TECHNICAL MANUALTM 9-1252This manual supersedes TM 9-1252, 24 April 1942, TM 9-1253, 24 April 1942, TB9-1253-FE1, 11 November 1944, and those portions of TB ORD 256, 26 February 1945, pertaining to the materiel covered herein. ORDNANCE MAINTENANCE 40 MM Antiaircraft Gun -TM 9-1252http://www.hnsa.org/doc/boforstm/index.htm  40-MM AUTOMATIC GUN M140-MM DUALAUTOMATIC GUN M240-MM ANTIAIRCRAFT GUN CARRIAGE M2A140-MM GUN MOUNT M3, ANDTWIN 40-MM GUN MOUNT M4  DEPARTMENT OF THE ARMY -MARCH 1951 United States Government Printing OfficeWashington : 1951 RESTRICTED This manual is correct to 11 October 1950DEPARTMENT OF THE ARMYWASHINGTON 25, D. C., 5 March 1951 TM 9-1252 is published for the information and guidance of all concerned.[AG 472 (21 Nov 50)]BY ORDER OF THE SECRETARY OF THE ARMY:OFFICIAL:EDWARD F. WITSELL Major General, USAThe Adjutant General   J. LAWTON COLLINSChief of Staff, United States ArmyDISTRIBUTION:Tech Svc (2) except 9 (25); Arm & Svc Bd (2); AFF (2); AA Comd (2); OS Maj Comd (10);Base Comd (2); MDW (3); A (20); CHQ (2); D (2); R 9 (2); Bn 9 (2); C 9 (2); FC (2); Sch(5) except 9 (50); Gen Dep (2); Dep 9 (10); PE (Ord 0) (5), OSD (2); PG 9 (10); Ars 9 (10);Dist 9 (10); SPECIAL DISTRIBUTION.For explanation of distribution formula see SR 310-90-1. iii   CONTENTS    ParagraphsPage CHAPTER 1.INTRODUCTION Section I  .General1-31  II. Description and data4-63CHAPTER 2.INSPECTION. Section I. General7-913  II. Technical inspection10-1815CHAPTER 3.PARTS, SPECIAL TOOLS, AND EQUIPMENT FOR FIELD AND DEPOT MAINTENANCE19-2327CHAPTER 4.GENERAL MAINTENANCE. Section I. Scope and definitions24-2549  II. Maintenance procedures26-2750CHAPTER 5.GUN M1 AND DUAL GUN M2. Section I. Barrel assembly28-3167  II. Automatic loader assembly32-3574 40 MM Antiaircraft Gun -TM 9-1252http://www.hnsa.org/doc/boforstm/index.htm   III. Recoil cylinder assembly36-39108  IV. Breech ring assembly40-43114 V. Breech operating mechanism44-47120 VI. Breech casing firing linkage48-53123 VII. Breech casing54-61130CHAPTER 6.CARRIAGE M2A1 AND MOUNT M3. Section I. Equilibrators62-67146  II. Elevating mechanisms68-75150  III. Traversing mechanisms76-83170  IV. Top carriage firing linkage84-89189 V. Frame platform groups90-95201 VI. Top carriage assemblies96-101209 VII. Drawbar and steering mechanism102-107218 VIII. Front axle assembly108-114225  IX. Rear axle assembly115-120240  X. Front compensating spring and chassis swivel group121-123250 iv    ParagraphsPage Section XI. Rear compensating, spring mechanism124-126260  XII. Chassis frame, girders, and outriggers127-130268  XIII. Wheels and hubs131-135275  XIV. Frame and wheel alinement136-139280  XV. Leveling jack assemblies140-144287  XVI. Electric and hand brakes145-155293  XVII. Electrical equipment (carriage M2A1)156-164307CHAPTER 7.TWIN MOUNT M4. Section I. Shields and plates165-169317  II. Equilibrators170-175327  III. Elevating lock assembly176-181332  IV. Traversing lock assembly182-187339 V. Elevating mechanism188-195343 VI. Traversing mechanism196-203353 VII. Top carriage firing linkage204-209361 VIII. Frame platform group210-213366  IX. Top carriage assembly214-218372CHAPTER 8.FINAL INSPECTION. Section I. Overall tests219-220377  II. Inspection certificate221-222383APPENDIX.REFERENCES 384INDEX 389 1   RESTRICTED This manual supersedes TM 9-1252, 24 April 1942, TM 9-1253,24 April 1942; TB9-1253-FE1, 11 November 1944, and those portions of TB ORD 256, 26 February 1945, pertaining to the materiel covered herein. CHAPTER 1INTRODUCTIONSection I. GENERAL1. Scope a. These instructions are published for the information and guidance of personnel responsiblefor afield and depot maintenance of this materiel. They contain information on maintenancewhich is beyond the scope of the tools, equipment, or supplies normally available to using 40 MM Antiaircraft Gun -TM 9-1252http://www.hnsa.org/doc/boforstm/index.htm
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