Procedure To Strip Dshk

PART VII—WEAPON DEVELOPMENT IN THE SOVIET UNION

AND HER SATELLITES

1. Background of Soviet Arms Development 3

Infantry Armament in the Nineteenth Century 3

Introduction of Maxim's Automatic Machine Gun 3

Madscn Gun 6

Machine Guns Used from 1900 to 1914 6

Weapons Used in World War 1 7

Development of the National Armament Industry 8

Shpitalny 13

Beresin 13

Wehrmacht Attack 13

Lend-Lease 14

Soviet Production in 1944 14

Types of Soviet Aircraft Armament in World War II 14

Basic Data on Machine Guns and Cannon Used for Arming Airplanes of the Air

Force of the Red Army 15

Soviet Armament after World War 11 16

Summary 17

2. Maxim Type Machine Gun and Federov "Avtomat" 21

Weapons Included in This Chapter 21

Maxim Type Machine Guns 21

Federov 4'Avtomat'' 21

History and Background 21

Federov "Avtomat" 26

Section 1. Maxim Type Machine Gun 26

General Data on Maxim Model 1910 • 26

, Description of the Maxim Action 26

Cycle of Operation 27

Disassembly by Groups 28

To Strip the Gun 28

Assembly by Groups 29

Detailed Disassembly and Assembly 29

To Strip the Feed Block 29

To Assemble the Feed Block 29

To Strip the Lock 29

To Mount the Lock 29

Chapter Page

2. Maxim Type Machine Gun and Federov "Avtomat" -Continued

Section 2. Federov "Avtomat" 30

General Data 30

Description of the Weapon 30

Cycle of Operation 30

3. Degtyarev and Gorylnov Machine Guns 31

Weapons Included in This Chapter 31

Degtyarev Machine Guns 31

Gorvunov Machine Gun 31

History and Background 31

SG-43 34

Section 1. Dcgtvarcv Machine Guns 34

General Data 34

Tabic of Characteristics of DP (Degtyarev Infantry) Production Version 36

General Data on DS (Degtyarev Medium) 37

General Data on DK (Degtyarev Heavy) and DShK (Degtyarev-Shpagin Heavy) . . 37

Description of the Weapon 38

DP (Degtyarev Infantry) 38

DA (Degtyarev Aircraft) 41

DT (Degtyarev Tank) 42

DPM (Degtyarev Infantry Modified) 42

DTM (Degtyarev Tank Modified) 42

"Company" (Degtyarev 1946 Infantry Gun) 42

DS (Degtyarev Medium) 13

DK (Degtyarev Heavy) 45

DShK (Deglyarev-Slipagiii Heavy) 45

Interesting Features of the 7.62-mm Degtyarev Machine Guns 49

Cycle of Operation for Drum-fed Models 53

Cycle of Operation for the DS Gun 55

Cycle of Operation for the DShK Gun 56

Disassembly of the DP by Groups 56

Barrel 56

Stock and Trigger Guard 56

Gas Piston, Slide, and Bolt 57

Detailed Disassembly of the DP 57

Barrel 57

Stock and Trigger Guard 57

Gas Piston, Slide, and Bolt 57

Receiver and Barrel Jacket 57

Assembly 57

Section 2. Goryunov Machine Gun 57

General Data on SG-43 (Stankovaya Goryunov 1943) 57

Description of the Weapon 57

Cycle of Operation 63

Disassembly 64

Field Stripping 64

Assembly 64

Chapter Page

4. Srikas 7.62-mm Machine Guns and Shvak Automatic Guns 72

Weapons Included in this Chapter 72

Shkas Aircraft Machine Guns of the 426 Series 72

Shvak Automatic Aircraft Guns (Shpitalnv-Vladimirov) 72

History and Background 72

Shvak automatic guns 75

Section 1. Shkas 7.62-mm Machine Gun 78

General Data on Later Models 78

Description of the KM-33 78

Cycle of Operation 80

Disassembly by Groups 81

Assembly by Groups 81

Detailed Disassembly SI

Assembly of Components 82

Section 2. Shvak 20-mm Automatic Guns (Shpitalny-Vladimirov) 82

General Data for Shvak 20-mm Automatic Gun 82

Description of the Shvak 20-iiun Automatic Gun 82

Cycle of Operation 90

Disassembly 92

Assembly of Components 92

Section 3. Shvak 12.7-mm Machine Gun (Shpitalny-Vladimirov) 93

Section 4. Shvak 37-mm Automatic Gun 93

5. Beresin Aircraft Machine Gun and VYa Aircraft Cannon 94

Weapons Included in this Chapter 94

Beresin Aircraft Machine Gun 94

VYa Aircraft. Cannon 94

History and Background 94

VYa Aircraft Cannon 96

Section 1. Beresin Aircraft Machine Gun 97

General Data 97

Description of the Weapon 98

Cycle of Operation 100

Disassembly of the BS by Groups 102

Assembly of the BS by Groups 102

Other Procedures 102

Section 2, VYa 104

General Data 104

Description of the Weapon 104

Cycle of Operation 109

Disassembly by Groups 110

To Remove Barrel and Assembly 110

Assembly by Groups 110

To Replace Barrel and Assembly 110

6. NS and N Series of Automatic Aircraft Cannon Ill

Models Included in this Chapter Ill

History and Background Ill

Chapter Page

6. NS and N Serifs of Automatic Aircraft Cannon—Continued

General Data for the NS 37 113

General Data for the NS 23 113

Description of the NS Series 113

Cycle of Operation for the NS Series : 120

Summary 123

Advantages 123

Disadvantages 123

7. Automatic Weapons Derived From Skoda Df.sions 139

Weapons Included in this Chapter 139

History and Background 139

Section 1. 30-imii FLAK Model A and Model B 141

General Data on Model A and Model B 141

General Description of Model A and Model B 142

Detail Description of the Model A 142

Recoiling Parts 142

Fixed Parts 143

Barrels and Barrel Extensions 143

Main Housing 144

Recoil Buffer Housing 145

Trigger and Sear Assemblies M 6

Recoil Svstem 148

Cocking Mechanism 149

Loaders 149

Ejector and Loader Latch Assemblies -, 149

Bolt 149

Cycle of Operation of the Model A 150

Préparai ion for Firing 150

Automatic Firing 150

Detail Description of the Model B 151

Recoiling Parts 151

Fixed Parts 151

Barrels and Barrel Extensions 151

Main Housing 152

Recoil Buffer Housing 152

Trigger and Sear Assemblies 152

Loaders and Winding Mcchanism 155

Ejector and Loader Latch Assembly 155

Bolt 156

Rccoil Svstem 156

Front Buffer 156

Cycle of Operation of the Model B 157

Preparation for Firing 157

Automatic Firing

157

Section 2. 50-mm PAK 158

General Data 158

General Description 158

Detail Description of the Nonrecoiling Parts

158

Gun Housing 158

Chapter J'age

7. Automatic Weapons Derived From Skoda Designs—Continued

Section 2. 50-irun PAK—Continued Detail Description of the Nonrccoiling Parts— Continued

Loading Mechanism 158

Rammer 139

Sear 159

Firing Lever 159

Single or Automatic Fire 159

Detail Description of Recoiling Parts 159

Breech Ring ' 159

Breech-Operating Mechanism 159

Hand-Operating Mechanism 160

Breechblock

160

Loading Mechanism 160

M anually Gh argi ng I he G u n 160

Cycle of Operation 160

Recoiling Movement 160

Coimter-Recoiling Movement 160

Section 3. 55-mm FLAK 161

General Data 161

General Description 161

Section 4. 75-mm FLAK R4 161

General Data 161

General Description 161

Detail Description 161

Gun 161

Feed Mechanism 163

Rammer 163

Fuze Setter 164

Firing Mechanism 164

Hydraulic Control System 164

Automatic Operation 166

Section 5. 75-inin Recoil less Aircraft Cannon 167

General Data 167

General Description 167

8. 7.92-mm Power-Driven Machine Gun ZB-80 168

History and Background 168

General Data 169

Description of the Weapon 169

Mounting 172

Cycle of Operation 173

Disassembly 174

To Disassemble the Belt Feeder 174

To Remove the Firing Pin Assembly 175

Disassembly of the Drive Gear 175

Disassembly of the Drive Gear Bushing 175

Preventive Maintenance - 175

Chapter Page

8. 7.92-mm Power-Drtvf.n Machine Gun ZB-80—Continued

Assembly 175

Malfunctions 175

9. Soviet Ammunition 176

7.62-mm Ammuni tion 176

12.7-mm Ammunition 177

Dual Ammunition Supply 178

20-mm Ammunition 178

23-mm Ammunition 180

37-mm Ammunition 180

Links 181

10. Symbols Used on Soviet Machine Guns and Aircraft Cannon 195

Code to Symbols Used on Soviet Machine Guns and Aircraft Cannon 195

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