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5-INCH TWIN GUN MOUNT MARK 28, 32 and 38, OP 805, 1944, describes the widely used naval gun of WW II.

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OP 805 (FIRST REVISION) 5-INCH TWIN GUN MOUNTS MARK 28, 32, AND 38 ALL MODS DESCRIPTION AND INSTRUCTIONS A BUREAU OF ORDNANCE PUBLICATION


OP 805

(FIRST REVISION)

5-INCH TWIN GUN MOUNTS
MARK 28, 32, AND 38 ALL MODS
DESCRIPTION AND INSTRUCTIONS

DEPARTMENT OF THE NAVY BUREAU OF ORDNANCE

19 MARCH 1957


ii
 
DEPARTMENT OF THE NAVY BUREAU OF ORDNANCE DEPARTMENT OF THE NAVY
BUREAU OF ORDNANCE
WASHINGTON 25, D. C.

19 March 1957

ORDNANCE PAMPHLET 805 (FIRST REVISION)

5-INCH TWIN GUN MOUNTS MARK 28, 32,
AND 38 ALL MODS - DESCRIPTION AND INSTRUCTIONS

1. Ordnance Pamphlet 805 (First Revision) provides descriptive information, as well as operating and maintenance instructions, for all service installations of 5-inch Mounts Mk 28, 32, and 38 all Mods.

2. Information and instructions in this publication are intended primarily for use by personnel engaged in the operation and maintenance of the equipment. All personnel so engaged should be familiar with the equipment's use, safe operation, casualty correction, disassembly, and maintenance. Thorough knowledge of the equipment is essential to its satisfactory operation.

3. This publication supersedes Ordnance Pamphlet 805, dated February 1942 and NAVORD OTI's G1-44 and G7-44, which should be destroyed.

F. S. WITHINGTON John Quinn Rear Admiral, U.S. Navy Deupty Chief, Bureau of Ordnance


iii
 

CONTENTS

  Page
 
CHAPTER 1 - GENERAL DESCRIPTION OF MOUNT
 
Structural Assembly 1
Shield 2
Stand 3
Publication References 5
Ordnance Installations 5
Gun House Ordnance Arrangement 9
Gun and Slide Assembly 9
Gun Laying Equipment 10
Ammunition Hoist Equipment 15
Ammunition Handling Equipment and Stowage 18
Fire Control Equipment 19
Auxiliary Installations 20
Working Circle Data 26
Mount Design Data 27
 
CHAPTER 2 - MOUNT OPERATION
 
Introduction 29
  Station Activities and Mount Control Methods 29
  Mount Personnel Organization 30
  Crew Stations 30
  Gun Compartment Crew 32
  Ammunition Handling Room Crew 32
Personnel Duties 32
  Mount Captain 32
  Pointer 35
  Trainer 37
  Sight Setter 38
  Fuze Setter 38
  Powder Men 39
  Projectile and Rammer Men 40
  Hot Case Man 42
  Shell Guard Man 42
  Sight Checker 42
  Ammunition Handling Room Captain 43
  Projectile Men 43
  Powder Men 45
  Personnel Duties with Rotating Ready Service Ammunition Rack 45
Preparing for Operation 45
  Manning Stations 46
  Starting Operations 46
  Establishing Communications 48
  Energizing Power Circuits 48
Ordnance Equipment Preparations 48
  Ordnance Inspection and Testing 48
  Ordnance Starting Operations 48
  Control Systems: Setting Controls 49
Firing Operations 49
  First Round 49
 
  Page
  Normal Semiautomatic Fire 51
  Gun Laying and Firing 51
Gun Casualty Operation 53
  Misfire Procedure 53
  Breech Jam Clearance Procedure 53
Securing Operations 55
  Stopping Equipment 55
  Hoist Unloading Operations 55
  Conditioning for Stowing 55
  Securing 55
 
CHAPTER 3 - GUN ASSEMBLIES
 
General Description 57
  Components 57
  Design Differences 57
  Gun Assembly Data 58
Detail Description 59
  Gun 59
    Gun Data 59
  Housing Assembly 61
    Housing Assembly Data 61
    Housing Forging 62
    Breech Mechanism 63
    Safety Link Bracket 69
    Recoil Mechanism 69
    Counterrecoil Mechanism 70
  Gas Ejector 72
Operation 75
Semiautomatic Fire 75
  Single-Round Operations 77
Instructions 79
General Maintenance 79
    Inspection 79
    Monthly Test 79
    Check for Bore Erosion 81
    Lubrication, Preservation 82
  Operating Instructions 82
  Gun Maintenance Materials 83
  Tools and Accessories 84
  Gun Preservation Instructions 84
  Breech Mechanism Preservation Instructions 84
  Counterrecoil System Maintenance 84
Adjustments 86
  Breechblock Adjustment 86
  Recoil System Adjustments 86
  Counterrecoil System Adjustment 87
  Gas Ejector Adjustment 87
Trouble Analysis 89
Disassembly and Assembly 89
Regunning Instructions 89
  Breech Mechanism Disassembly 90
  Counterrecoil System Disassembly and Assembly 92
Gas Ejector Disassembly and Assembly.htm 93

iv
 
  Page
   
CHAPTER 4 - SLIDE ASSEMBLIES
 
General Description 95
  Components 95
  Slide Data 95
  Design Differences 95
Detail Description 97
Detail Description 97
  Slide 97
  Slide Weldment 98
    Rear Plate 98
    Case Tray and Guide Plate 99
    Housing Guides 99
    Circular Segment Bearing 99
    Breech Mechanism Elements 99
    Firing Mechanism Elements 99
    Safety Link Device 99
    Elevating Arc 99
    Gun Port Shield 99
    Balance Weights 99
    Rammer Fixed Rack 100
  Rammer 100
    Rammer Data 102
    Rammer Mechanism 102
    Rammer Controls 104
    Rammer Power Drive 105
Operation 109
Ram Mechanical Action 109
  Ram Release Mechanical Action 110
  Retract Action 110
  Retract Release Mechanical Action 112
  Ram Stroke Stalled Action 113
  Rammer Stopping Action 114
Instructions 114
  Stowing the Rammer 116
Adjustments 116
Circular Segment Gun-Bearing Adjustment 116
  Rammer Speed Adjustment 117
  Pilot Valve Adjustment 117
  Relief Valve Adjustment 117
  Buffer Valve Adjustment 118
  Retract Limit Rod Adjustment 118
Trouble Analysis 118
Disassembly and Assembly 119
Rammer Removal 119
  Rammer Cylinder Installation 119
  Hydraulic Pump Motor Removal 119
  Rammer Pump Removal 119
  Pump and Valve Block Disassembly 120
  Pump Installation 120
 
CHAPTER 5 - CARRIAGE
 
General Description 121
  Components 121
  Design Differences 121
  Data 123
Detail Description 124
  Base Ring 124
  Gun Carriage Weldment 125
Operation 127
 
  Page
Instructions 129
  Operating Precautions 129
  Servicing Instructions 131
Adjustments 131
  Trouble Analysis 132
Assembly and Disassembly 132
 
CHAPTER 6 - STAND
 
General Description 135
Detail Description 135
Instructions 137
Disassembly and Assembly 138
 
CHAPTER 7 - ELEVATING GEAR
 
General Description 141
  Components 141
  Functional Arrangements 141
  Design Differences 142
Detail Description 143
  Mechanical System 143
  Elevating Worm and Pinion Drive 143
  Elevation Handwheel Drive Assembly 146
  A-end Control Unit 149
Operation 151
  Automatic Limit Stop Operation 151
  Manual Drive Operation 152
  Gunfire Reactions 152
Instructions
  Manual Drive Procedure 156
  Maintenance 156
Adjustments 156
Trouble Analysis 159
Disassembly and Assembly 159
 
CHAPTER 8 - TRAINING GEAR
 
General Description 163
  Components 164
  Functional Arrangement 164
  Design Differences 165
Detail Description 165
Mechanical System 165
  Training Worm and Pinion Drive 165
  Train Handwheel Drive Assembly 167
  Main Reduction Gear 169
  A-end Control Unit 171
  Manual Drive Operation 174
Instructions 178
Adjustments 178
Trouble Analysis 181
Disassembly and Assembly 181
 
CHAPTER 9 - POWER DRIVES
 
Power-Drive Systems 183
  Electric Motor and Controller 186
  Hydraulic Transmission System 196

v
 
  Page
  A-end 198
  B-end 202
  Auxiliary Pumps and Reduction Gear 202
  Auxiliary Devices 204
Indicator-Regulators 213
  Components 213
  Functional Arrangement 213
  Component Locations 215
  Design Differences 215
  Speed Data (Automatic and Local Control) 215
  Indicating Equipment 217
  Components 217
  Parallax and Roller Path Wear Compensation 225
  Control Equipment 226
  Components 229
  Local Control Friction Drive 229
  Synchro Power-Failure Device 229
  Fine and Coarse Control Synchro Motors 230
  Relief Cam Assemblies 230
  Differential Cam Assembly 230
  Regulator Valve Block 233
  Coarse Pilot Valve Block 234
  Reaction to Change in Signal 235
  Synchronizing Control Device 240
  Synchronizing Control Device Action 242
  Auxiliary Devices 251
  Regulating and Relief Valve Actions 254
  Auxiliary Devices Operation 254
  Indicator-Regulator Drain Arrangement 256
Operation 261
  Hand Control Operation 261
  Protective Device Operation 265
  Local Control Operation 265
  Automatic Control Operation 265
  Control Pressure System 266
  General Operating Precautions 267
  Parallax Correction Instructions 287
  Control Selection 267
  Securing the Power Drives 268
  Instructions for Casualty Operation 268
  Operating Precautions 268
  Service Instructions 269
  Maintenance 270
  Exercise Operation 271
General Adjustments 271
Indicator-Regulator Adjustments 273
  Elevation Indicator-Regulator Mk 42 Adjustments 273
  Train Indicator-Regulator Mk 46 Adjustments 278
  Elevation Indicator-Regulator Mk 34 Adjustments 285
  Train Indicator-Regulator Mk 38 Adjustments 292
  Dynamic Control Test 297
Trouble Analysis 298
  Installation of Indicator-Regulators 301
Disassembly 302
  Piping Removal and Replacement 302
 
  Page
Power Drive Equipment Removal 302
  Indicator-Regulator Disassembly 307
  Disassembly of Fine Pilot and Amplifier Valves 311
  Disassembly of Coarse Pilot Valve 311
  Disassembly of Acceleration Valve and Valve Tube 311
  Disassembly of Remaining Valves in the Regulator Valve Block 312
Assembly 313
  Installing the Fine Control Synchro 313
  Installing the Differential Cam Assembly 313
 
CHAPTER 10 - PROJECTILE HOISTS
 
General Description 315
Detail Description 316
  Power Drive 316
  Conveyor 319
  Central Column 320
  Fuze Setter Mechanism 320
  Hoist Controls 323
Operation 326
Instructions 328
  Maintenance 328
  Operating Precautions 329
  Trouble Analysis 329
Adjustments 330
  Conveyor Chain Tension Adjustment 331
  Lower-End Control Gear Adjustments 331
  Upper-End Control Gear Adjustments 335
  Starting Valve Linkage Adjustment 339
Disassembly and Assembly 340
 
CHAPTER 11 - PROJECTILE HOIST POWER DRIVE (VICKERS)
 
General Description 343
  Components 343
  Design Differences 343
Detail Description 343
  Power Unit 343
  Hoist Drive Unit 346
Operation 350
  Power Drive Operation Cycle 352
  Manual Drive 358
Instructions 359
  General Maintenance 359
  Installation Instructions 359
  Operating Precautions 359
  Hydraulic Equipment Servicing 360
  Trouble Analysis 360
Adjustments 364
Disassembly and Assembly 367
  Power Unit Disassembly and Assembly 367
  Hydraulic Motor Removal 367
  Hoist Drive Unit Removal 368
  Valve Block Removal 369
  Hydraulic Brake and Hand Drive Unit Removal 370

vi
 
  Page
 
CHAPTER 12 - PROJECTILE HOIST POWER DRIVE (NORTHERN ORDNANCE)
 
General Description 371
Detail Description 371
  Power Unit 371
  Hoist Drive Unit 374
Operation 381
  Power Drive Operating Cycle 381
  Manual Drive 385
Instructions 386
  Maintenance 386
  Installation Instructions 386
  Operating Precautions 386
  Hydraulic Equipment Servicing 387
  Trouble Analysis 387
Adjustments 389
Disassembly and Assembly 391
 
CHAPTER 13 - POWDER HOISTS
 
General Description 393
  Components 393
  Functional Arrangement 393
  Design Differences 393
Detail Description 394
  Hoist Tube 394
  Power Drive 397
  Hoist Manual Drive (Vickers) 397
  Hoist Manual Drive (Northern Ordnance) 397
  Hoist Controls 398
Operation 401
Instructions 401
  General Maintenance 401
  Operating Precautions 402
  Trouble Analysis 402
Adjustments 402
Disassembly and Assembly 405
  General Instructions 405
 
CHAPTER 14 - POWDER HOIST POWER DRIVE (VICKERS)
 
General Description 407
Detail Description 407
  Power Unit 407
  Hoist Drive Unit 408
Operation 412
  Power Drive Operating Cycle 412
  Manual Drive 419
Instructions 419
  General Maintenance 419
  Installation Instructions 419
  Operating Precautions 419
  Hydraulic Equipment Servicing 420
  Trouble Analysis 420
Adjustments 423
Disassembly and Assembly 424
  Power Unit Disassembly and Assembly 425
  Hoist Drive Unit Disassembly and Assembly 425
  General Assembly Instructions 426
 
  Page
 
CHAPTER 15 - POWDER HOIST POWER DRIVE (NORTHERN ORDNANCE)
 
General Description 427
Detail Description 429
  Power Unit 429
  Hoist Drive Unit 429
Operation 433
  Power Drive Operating Cycle 433
  Manual Operation 435
Instructions 440
  General Maintenance 440
  Installation Instructions 440
  Operating Precautions 440
  Hydraulic Equipment Servicing 440
  Trouble Analysis 441
  Adjustments 443
Disassembly and Assembly 444
 
CHAPTER 16 - FUZE SETTING INDICATOR-REGULATOR, EARLY TYPE, FUZE SETTING INDICATOR-REGULATOR MK 8 MODS 4, 7
 
General Description 447
  Components 447
  Arrangement 447
  Design Differences 448
  Data 448
Detail Description 448
  Dials and Indicators 448
  Indicating Synchro Motors 449
  Follow-up Heads 450
  Pilot Motor 453
  Power Motor 453
  Power Control Head 454
  Overload Device 456
  Limit Stop Mechanism 456
  Selector Mechanism 459
  Electrical System 459
Operation 459
  Automatic Control Operation 459
  Manual Drive Operation 462
Instructions 463
  Operating Instructions 463
  Operating Precautions 463
  Maintenance Instructions 464
  Trouble Analysis 464
Adjustment 465
Disassembly and Assembly 467
 
CHAPTER 17 - FUZE SETTING INDICATOR-REGULATOR MK 9 MODS 0, 1
 
General Description 473
  Components 473
Detail Description 475
  Indicating Dials 475
  Indicating Synchro Motors 475
  Low Speed Follow-up Head 477

vii
 
  Page
  Power Control Synchro and Power Control Head 477
  Power Motor 480
  Overload Device 481
  Limit Stop Mechanism 481
  Friction Clutch 485
  Selector Mechanism 486
  Electrical System 486
Operation 487
  Principle of Operation of Power Control Head 487
  Automatic Control 488
  Manual Drive 490
Instructions 490
  Operating Instructions 490
  Operating Precautions 490
  Maintenance 490
  Trouble Analysis 499
Adjustments 500
Disassembly and Assembly 503
 
CHAPTER 18 - SIGHTS
 
General Description 505
Detail Description 510
  Sight Mk 36 Mod 0 510
  Telescopes Mk 67 Mod 0 and Mk 68 Mod 0 510
  Sight Setter's Indicator Mk 4 Mod 0 513
  External Shafting and Gearing System 519
  Mount Captain's Open Sight Mk 39 Mods 0, 2, and 6 521
Operation 523
  5-Inch Sight Mk 36 Mod 0 Operation 523
Instructions 524
  Maintenance 524
  Adjustments 525
Disassembly and Assembly 529
 
CHAPTER 19 - SHIELDS
 
General Description 533
  Components 533
  Design Differences 533
Detail Description 536
Instructions 545
  Maintenance 545
  Trouble Analysis 545
  Adjustments 546
  Disassembly and Assembly 547
 
CHAPTER 20 - ELECTRICAL INSTALLATION
 
General Description 551
  Cognizance 551
  Major Components and Circuits 551
 
  Page
Detail Description 553
  Power System 553
    Main Power Supply 553
    Power Motors 554
    Controllers and Associated Equipment 556
    Electric Power Motor Data 557
    Space Heaters 565
    Controller Data (Ordnance) 566
  Design Differences 568
    Components 568
    Emergency Power Supply Storage Battery 568
    Firing Circuit 568
    Instrument and Battle-Station Lighting Circuit 572
  General Lighting Circuit 574
    Components 575
  Fire Control Circuits 580
    Components 580
  Communication Circuits 581
    Components 581
  Gun Collision Prevention Circuit 583
Instructions 584
  General Care 584
  Power System Maintenance 584
  Firing and Lighting Circuit Maintenance 585
  General Lighting Circuit Maintenance 585
  Fire-Control Circuits Maintenance 586
  Communication Circuits Maintenance  
 
CHAPTER 21 - TOOLS AND ACCESSORIES
 
Special Equipment 587
Standard Equipment 587
 
CHAPTER 22 - HYDRAULIC EQUIPMENT INSTRUCTIONS
Installation Instructions 611
Maintenance Instructions 613
 
CHAPTER 23 - LUBRICATING INSTRUCTIONS
 
Charts 617
Lubrication Chart Check-off Lists 618
 
APPENDIX
 
Mount Ordnance Data 619
 
SAFETY PRECAUTIONS 621
 
INDEX 623

viii
 

ILLUSTRATIONS

Figure Title Page
 
CHAPTER 1
 
Front 5-inch 38-cal. Twin Mount. Installed Arrangement. xxii
1 5-inch Mount Mk 32 Mod 4. Left Front View. 2
2 5-inch Mount Mk 32 Mod 4. Rear View. 3
3 5-inch Mount Mk 32 Mod 2. Shield Removed - Front View. 4
4 5-inch Mount Mk 32 Mod 2. Shield Removed - Right Side. 5
5 5-inch Mount Mk 32 Mod 2. Shield Removed - Left Side. 6
6 5-inch Mount Mk 38 Mods. Ordnance Equipment Arrangement. Plan View. 7
7 5-inch Mount Mk 32 Mods. Ordnance Equipment Arrangement. Plan View. 8
8 5-inch Mount Mk 28 Mods. General Arrangement. Longitudinal Section. 12
9 5-inch Mount Mk 32 Mods. General Arrangement. Longitudinal Section. 13
10 5-inch Mount Mk 38 Mods. General Arrangement. Longitudinal Section. 14
11 Projectile Hoist - General Arrangement. Lower End. 16
12 Powder Hoist - General Arrangement. Lower End. 17
13 Mount Captain's Station. General Arrangement. 21
14 5-inch Mount Mk 28 Mods. Working Circle. 23
15 5-inch Mount Mk 32 Mods. Working Circle. 24
16 5-inch Mount Mk 38 Mods. Working Circle. 25
 
Figure Title Page
 
CHAPTER 2
 
17 5-inch Mounts Mk 28, 32, and 38. Gun House. Personnel Arrangement. 30
18 5-inch Mounts Mk 28 and 32. Ammunition Handling Room. Personnel Arrangement. 31
19 5-inch Mount Mk 38. Ammunition Handling Room. Personnel Arrangement. 33
20 Mount Captain's Station, General Arrangement. 34
21 Pointer's and Checker's Stations. General Arrangement. 35
22 Trainer's Station. General Arrangement. 37
23 Sight Setter's Station, General Arrangement. 39
24 5-inch Mount Mk 38. Inner Ammunition Handling Room. Projectilemen's Stations. 41
25 Extraction of Cartridge Case. 42
26 5-inch Mount Mk 38. Inner Ammunition Handling Room. Powdermen's Stations. 44
27 5-inch Mount Mk 38. Outer Ammunition Handling Room. 46
28 Training Gear and Controls. Functional Diagram. 50
29 Elevating Gear and Controls. Functional Diagram. 52
30 Sight. Schematic Diagram. 54
 
CHAPTER 3
 
31 Gun Assembly. Installed Arrangement. 56

ix
 
Figure Title Page
   
32 Structural Support of Gun and Housing in Slide. 58
33 Gun and Housing. Section. 59
34 Gun Securing Key Assembly. Old Design. 60
35 Gun Securing Key Assembly. New Design. 60
36 Gun Assembly. Plan View. 60
37 Gun Assembly. Right Side. 60
38 Breech Mechanism. Installed Arrangement. Section. 61
39 Breech and Extractor Mechanisms. Installed Arrangement. 62
40 Breech Operating Mechanism. Section. 63
41 Breechblock and Operating Shaft Mechanisms. Section. 64
42 Breechblock and Extractors Assembly. 65
43 Breechblock and Operating Shaft Assembly. Bottom View. 65
44 Hand Closing Latch Assembly. Section. 66
45 Salvo Latch and Cam Plate Retractor Mechanism. 66
46 Adapter Bolt for Cam Plate Retraction. 67
47 Firing Pin Mechanism. Section. 68
48 Safety Link Bracket. Assembled Arrangement. 69
49 Recoil Mechanism. Section. 70
50 Recoil Mechanism Cylinder Head. Section. 70
51   Counterrecoil Mechanism. Section. 71
52   Gas Ejector Piping System. General Arrangement. 72
53   Gas Ejector Air Valve Mechanism. Assembled Arrangement. 73
 
Figure Title Page
 
54 Breech Mechanism Operation. Breech Closed. 74
55 Gun Firing Operation. Breech Closed. 75
56 Gun Firing Operation. Cam Plate Action. Counterrecoil Movement. Breech Closed. 75
57 Gun Firing Operation. Cam Plate Action. Counterrecoil Movement. Breech Open. 75
58 Gun Firing Operation. Cam Plate Action. Gun in Battery. Breech Open. 76
59 Gun Firing Operation. Breech Closed. Extractors Engaged. 76
60 Gun Firing Operation. Breech Open. Extractor Action. 77
61 Breech Mechanism Operation. Breech Open. 78
62 Firing Mechanism Operation. Breech Opening. Mid Position. 78
63 Gun Firing Operation. Cam Plate Action. Ammunition Rammed. Breech Closed. 78
64 Firing Mechanism Operation. Breech Closing. Near Closed Position. 79
65 Firing Mechanism Operation. Breech Closed. 79
66 Counterrecoil System Servicing Connections and Accessories. 80
67 Breechblock Releasing Tool. 82
68 Breech Operating Spring. Adjustment. 86
69 Recoil System Buffer Choke. Adjustment. 87
70 Recoil Piston Rod Packing. Adjustment. 87
71 Differential Piston Rod. Adjustment. 88
72 Gas Ejector Cut-off Valve. Adjustment. 88

x
 
Figure Title Page
 
73 Breech Mechanism Disassembly. Cam Tool Assembly. 90
74 Special Tool for Removal of Breech Operating Spring. 90
75 Breech Mechanism Reassembly. Extractor Spring Plunger. Compressor Installed. 91
76 Breech Mechanism Reassembly. Extractors Inserted. 91
77 Breech Mechanism Reassembly. Bearing Block Installation. 92
78 Counterrecoil Mechanism. Disassembly. 93
 
CHAPTER 4
 
79 5-inch Slide Mk 27. Installed Arrangement of Right Slide. 96
80 5-inch Slide Mk 27. Installed Arrangement of Left Slide. 97
81 Right Slide. Gun Port Shield and Rammer Removed. Right Front View. 98
82 Gun Port Shield. Left Gun. Assembled Arrangement. 103
83 Right Slide Rammer. Assembled Arrangement. Left Side. 101
84 Right Slide Rammer. Assembled Arrangement. Right Side. 101
85 Right Slide Rammer. Crosshead Assembly. 102
86 Right Slide Rammer Controls. 103
87 Rammer Retract Limit Link Assembly. 104
88 Rammer Cylinder and Piston. Section. 105
89 Rammer Power Plant. 107
90 Rammer Pump and Main Valve Block. Section. 107
91 Rammer Pilot Valve Block Assembly. Exploded. 108
92 Rammer Operation. Ramming. Initial Position. 109
93 Rammer Operation. Ramming. Rammed Position. 110
 
Figure Title Page
 
94 Rammer Operation. Retraction. Initial Position after Recoil. 111
95 Rammer Operation. Retraction. Final Position. 111
96 Rammer Circuit Diagram. Start of Ram Stroke. 112
97 Rammer Circuit Diagram. Mid-Position of Ram Stroke. 112
98 Rammer Circuit Diagram. End of Ram Stroke. 113
99 Rammer Circuit Diagram. Start of Retraction. 113
100 Rammer Circuit Diagram. End of Retraction. 113
101 Rammer Circuit Diagram. Ram Stroke Stalled. 113
102 Circular Segment Gun Bearing. Adjustment. 116
103 Pilot Valve. Adjustment. 117
104 Relief Valve. Adjustment. 118
105 Buffer Valve. Adjustment. 118
 
CHAPTER 5
 
106 5-inch Carriage Mk 31. General Arrangement. 122
107 5-inch Carriage Mk 31. Water Seal and Roller Bearings. Installed Arrangement. 123
108 5-inch Carriage Mk 27. Water Seal and Roller Bearings. Installed Arrangement. 123
109 Training Stop Buffer. 125
110 Train Centering Pin, Section. 125
111 5-inch Carriage Mk 31 Mod 1. Water Seal and Roller Bearings. Section. 126
112 5-inch Carriage Mk 27 Mods 0, 2, 6, 7, 9, 12, 13, 14. Water Seal. Section. 126
113 Slide Trunnion Bearing. Left Trunnion Bearing Assembly. Right Gun. 127

xi
 
Figure Title Page
 
114 Foot Firing Mechanism and Firing Stop Mechanism, Schematic. 128
115 5-inch Mount Mk 38. Tram Arrangement. 129
116 Firing Stop Mechanism. Adjustment. 130
117 Holding-Down Clip. Adjustment. 131
118 5-inch Stand Mk 17 Mod 1. General Arrangement. 136
 
CHAPTER 6
 
119 5-inch Stand Mk 16 Mod 3. General Arrangement. 137
120 5-inch Stand Mk 16 Mod 3. Section. 138
121 5-inch Stand Mk 17 Mod 1. Section. 138
122 Horizontal Bearing Separators Clamp. Disassembled. 139
 
CHAPTER 7
 
123 5-inch Elevating Gear Mk 10 Installed Arrangement. Front View. 142
124 5-inch Elevating Gear Mk 10. Installed Arrangement. Left Side View. 143
125 5-inch Elevating Gear Mks 9 and 10. Mechanical Schematic. 144
126 5-inch Mount Mk 32. Pointer's and Checker's Station. 145
127 5-inch Elevating Gear Mks 9 and 10. Handwheel Drive Assembly and B-End. Left Rear View. 146
128 5-inch Elevating Gear Mks 9 and 10. Handwheel Drive Assembly and B-End. Front View. 146
129 5-inch Elevating Gear Mks 9 and 10. Manual Drive Gearing Schematic. 147
 
Figure Title Page
 
130 Planetary Reduction Gear. 148
131 Elevating Gear Auxiliary Pumps Reduction Gear. 149
132 Elevating Gear Mks 9 and 10. A-End Control Unit. 149
133 Elevating Gear A-End Control Unit. Section. 150
134 5-inch Elevating Gear Mks 9 and 10. Hand Control and 153, Manual Drive Gearing Systems. 154
135 Elevating Gear Anti-Overhaul Mechanism. Normal Operation. Increasing Elevation. Schematic. 155
136 Elevating Gear Anti-Overhaul Mechanism. Anti-Kick Control. Increasing Elevation. Schematic. 155
137 Elevating Gear Anti-Overhaul Mechanism. Anti-Overhaul Control. Schematic. 155
138 Elevating Worm. Adjustment. 157
139 Elevating Gear Anti-Overhaul Mechanism. Adjustment. 158
140 Elevating Gear Limit Stop Key and Clamp. Adjustment. 159
 
CHAPTER 8
 
141 5-inch Training Gear Mk 10. Installed Arrangement. Front View. 163
142 5-inch Training Gear. Installed Arrangement. Right Side. 164
143 5-inch Training Gear Mks 9 and 10. Mechanical Schematic. 166
144 5-inch Mount Mk 32. Trainer's Station. 167
145 5-inch Training Gear Mks 9 and 10. Hydraulic Transmission, Indicator-Regulator, and Hand-wheel Drive Assembly. 168
146 5-inch Training Gear Mks 9 and 10. Handwheel Drive Assembly. Rear View. 169

xii
 
Figure Title Page
 
147 5-inch Training Gear Mks 9 and 10. Manual Drive. Schematic. 170
148 Train Reduction Gear. Section Through Input Shaft. 171
149 Training Gear. A-End Control Unit. Top View. 172
150 Train A-End Control Unit. Section. 173
151 5-inch Training Gear Mks 9 and 10. Hand Control and Manual Drive Gearing Systems. 175, 176
152 Elevating Gear Anti-Overhaul Mechanism. Normal Operation. Increasing Elevation. Schematic. 177
153 Elevating Gear Anti-Overhaul Mechanism. Anti-Kick Control. Increasing Elevation. Schematic. 177
154 Elevating Gear Anti-Overhaul Mechanism. Anti-Overhaul Control. Schematic. 178
155 Training Worm. Adjustment. 179
156 Train Limit Stop Key and Clamp. Adjustment. 180
 
CHAPTER 9
 
157 5-inch Elevating Gear Mks 9 and 10. Power Drive Unit. Right Front View. 183
158 5-inch Elevating Gear Mks 9 and 10. Power Drive Unit. Left Rear View. 184
159 5-inch Training Gear Mks 9 and 10. Electric Hydraulic Power Drive. Right Front View. 185
160 5-inch Training Gear Mks 9 and 10. Electric Hydraulic Power Drive. Left Rear View. 185
161 Shield Access Port. Elevating Side. 186
162 5-inch Elevating Gear Mks 9 and 10. Automatic and Local Control Gearing Systems. 187, 188
 
Figure Title Page
 
163 5-inch Training Gear Mks 9 and 10. Automatic and Local Control Gearing Systems. 189, 190
164 5-inch Elevating Gear Mk 10. Piping Diagram. New Arrangement. 191
165 5-inch Elevating Gear Mk 10. Piping Diagram. Old Arrangement. 192
166 5-inch Elevating Gear Mk 5. Piping Diagram. New Arrangement. 193
167 5-inch Elevating Gear Mk 5. Piping Diagram. Old Arrangement. 194
168 Training Gear Piping Schematic. New Arrangement. 195
169 Training Gear Piping Schematic. Old Arrangement. 196
170 Train A-End. Front View. 197
171 Train A-End. Section. 198
172 Elevating Gear A-End Tilting Box. Section. 199
173 Train Hydraulic Power System. A-End Valve Plate. 200
174 Elevating Gear Stroke Control and Main Cylinder. Section. 201
175 Elevating Gear A-End Stroking Arm. Vertical Section. 202
176 Elevating Gear B-End. 203
177 Elevating Gear Sump Pump. 204
178 Train Gear Replenishing Pump. Section. 205
179 Elevating Gear Control Pressure Pump. Section. 205
180 Replenishing Oil Filters. Section. 206
181 Train Anti-Overhaul Valve Block. Section. 206
182 Elevating Gear Anti-Overhaul Mechanism. Schematic. Guns Stationary. V-AO at Neutral. 207

xiii
 
Figure Title Page
 
183 Power Failure Solenoid and Valve. Normal Position. Section. 208
184 Control Pressure Filters. Section. 209
185 Auxiliary Exhaust Filter. Section. 209
186 Selector Valve. Automatic Control Position. 211
187 Selector Valve. Local Control Position. 211
188 Selector Valve. Hand Control Position. 212
189 Selector Valve. Manual Drive Position. 212
190 Elevation Indicator-Regulator Mk 42. Plan View. 214
191 Elevation Indicator-Regulator Mk 42. Right Rear View. 215
192 Train Indicator-Regulator Mk 46. Plan View. 216
193 Train Indicator-Regulator Mk 46. Right Rear View. 217
194 Elevation Indicator-Regulator Gearing Schematic. 218
195 Train Indicator-Regulator Gearing. Schematic. 219
196 Elevation Indicator-Regulator Mk 42. Wiring Diagram. 220
197 Train Indicator-Regulator Mk 46. Wiring Diagram. 221
198 Elevation Indicator-Regulator Mk 34. Wiring Diagram. 222
199 Train Indicator-Regulator Mk 38. Wiring Diagram. 223
200 Elevation Indicator-Regulator Mk 42. Roller Path Inclination Dial. 225
201 Train Indicator-Regulator Mk 46. Parallax Cam and Contact Assemblies. 226
202 Elevator and Train Indicator-Regulators Mks 42 and 46. Receiver Assembly. Schematic. 227
 
Figure Title Page
 
203 Local Control Mechanism. 228
204 Synchro Power-Failure Device 229
205 Elevation Indicator-Regulator Mk 42 and Train Indicator-Regulator Mk 46. Automatic Control Circuit. Hydraulic Schematic. 231, 232
206 Fine Pilot and Amplifier Valves. 233
207 Regulator Control Circuit Following Signal of Uniform Velocity. 237
208 Regulator Control Circuit Following Signal of Uniform Acceleration. 238
209 Regulator Control Circuit Following Signal of Increasing Acceleration. 239
210 Synchronizing Control Device. Intermittent Drive. Drive Meshed at Point of Transfer. 240
211 Offset Control Valve. Position for Error Greater Than 1.5 Degrees. Right Train or Elevation. 241
212 Offset Control Valve. Position for Error Greater Than 1.5 Degrees. Left Train or Depression. 241
213 Synchronizing Supply Pressure Reducing Valve and Offset Pressure Reducing Valve. 242
214 Elevation and Train Indicator-Regulators Mks 42 and 46. Synchronizing Control Device. Hydraulic Schematic. 244
215 Elevation and Train Indicator-Regulators Mks 42 and 46. Automatic Control Circuit. Error Greater Than 3.8 Degrees. 245
216 5-inch Elevating Gear Mks 9 and 10. Hydraulic Schematic. Automatic Control. 247, 248
217 5-inch Training Gear Mks 9 and 10. Hydraulic Schematic. Automatic Control. 249, 250

xiv
 
Figure Title Page
 
218 Elevation and Train Indicator-Regulators Mks 42 and 46. Automatic Control Circuit. Error Reduced One-Half by Apparent Response. 252
219 Elevation Indicator-Regulator Mk 42. Right Rear View. Covers Removed. 253
220 High Pressure Regulating Valve. 254
221 Low Pressure Reducing Valve. 255
222 Intermediate High Pressure Relief Valve. 255
223 Sump Pump and Oscillator. 256
224 5-inch Elevating Gear Mk 5. Hydraulic Schematic. Automatic Control 257, 258
225 5-inch Training Gear Mk 5. Hydraulic Schematic. Automatic Control 259, 260
226 Elevation and Train Indicator-Regulators Mks 34 and 38. Oscillator Valve Positions. 261
227 5-inch Elevating Gear Mks 9 and 10. Hydraulic Schematic. Hand Control. 263, 264
228 Train Indicator-Regulator Parallax Friction Drive. Adjustment. 267
229 Acceleration Valve. Two Slot Tube. Legend Plate. 269
230 Control Pressure Pump Relief Valve. Adjustment. 272
231 Train B-End Relief Valve. Adjustment. 272
232 Indicator-Regulator Electrical Zero Circuit. 273
233 Elevation and Train Indicator-Regulators Mks 42 and 46. Valve Blocks and Synchro Power-Failure Device. 274
234 Elevation Indicator-Regulator Mk 42. Left Rear View. 275
235 Elevation Handwheel Drive Assembly. Adjustments A-14 and A-13. 276
 
Figure Title Page
 
236 Special Tools for Disassembly and Assembly of Elevation and Train Indicator-Regulators. 276
237 Adjustments A-2 and A-3. 276
238 Elevation and Train Indicator-Regulators Mks 42 and 46. Regulating Equipment. 277
239 Train Indicator-Regulator Mk 46. Right Rear View. Covers Removed. 279
240 Train Indicator-Regulator Mk 46. Case Interior. 280
241 Train Indicator-Regulator Mk 46. Left Rear View. Covers Removed. 281
242 Train Handwheel Drive Assembly. Adjustment A-17. 282
243 Train Indicator-Regulator Mk 46. Cover No. 5 Removed. 283
244 Train Indicator-Regulator Mk 46. Adjustment A-3. 283
245 Train Indicator-Regulator Mk 46. Adjustment A-20. 285
246 5-inch Training Gear Mks 9 and 10. Adjustment A-18 in Handwheel Drive Assembly. 285
247 Elevation and Train Indicator-Regulators Mks 34 and 38. Synchro Power-Failure Device and Valve Blocks. 286
248 Elevation Indicator-Regulator Mk 34. Left Rear View. Covers Removed. 287
249 Elevation Indicator -Regulator Mk 34. Right Rear View. Covers Removed. 288
250 Elevation Indicator-Regulator Mk 34. Case Interior. Adjustment A-10 and A-9. 289
251 Adjustment of Synchro Power Failure Device. (Auto Control.) 290
252 Elevation and Train Indicator-Regulators Mks 34 and 38. Regulating Equipment. 291

xv
 
Figure Title Page
 
253 Train Indicator-Regulator Mk 38. Case Interior. 293
254 Train Indicator-Regulator Mk 38. Left Rear View. Covers Removed. 294
255 Train Indicator-Regulator Mk 38. Right Rear View. Covers Removed. 295
256 5-inch Mount Mk 32. Shield Access Port to Elevation Indicator-Regulator. 302
257 5-inch Mount Mk 32. Shield Access Port to Train Indicator-Regulator. 303
258 Indicator Assembly. Removal. 307
259 Fine Control Synchro Unit. Removal. 308
260 Automatic Receiver Assembly. Removal. 308
261 Regulating Valve Blocks and Synchronizing Control Device. Disassembled. 309
262 Indicator-Regulator Case. Automatic Receiver Assembly Removed. 310
263 Synchro Power-Failure Device Removal. 310
264 Synchronizing Control Valve Block. Section. 312
265 Synchro Power-Failure Device Removed from Indicator-Regulator. 313
266 Fine Control Relief Cam and Differential Cam Assemblies. 313
267 Synchro Power-Failure Device. Exploded. 314
268 5-inch Projectile Hoists Mk 4 Mods. General Arrangement. 316
269 5-inch Projectile Hoists Mk 4 Mods. Lower End. Installed Arrangement. 317
270 5-inch Projectile Hoists Mk 4 Mods 16 and 17. Upper End. Installed Arrangement. 318
 
Figure Title Page
 
271 Upper End Gear and Sprocket. Assembled Arrangement. 319
 
CHAPTER 10
   
272 Lower End Ejector and Sprocket. Assembled Arrangement. 321
273 Hoisting and Fuze Setting Equipment. Schematic. 322
274 Upper End Control Gear and Ejector Mechanism. 324
275 Lower End Control Gear. 325
276 Chain Tension. Adjustment. 330
277 Fuze Setter Chains. Adjustment. 331
278 Lower Door. Adjustment. 332
279 Lower End Control Gear Clutch. Adjustment. 333
280 Clutch Centerline. Adjustment. 334
281 Lower End Control Cam Stop Bolt. Adjustment. 334
282 Lower End Door Spring Rod. Adjustment. 334
283 Lower End Ejector Mechanism. Adjustment. 335
284 Bypass Valve Linkage. Adjustment. 335
285 Flight Level. Adjustment. 335
286 Bell Crank and Lower Connecting Rod. Adjustments. 336
287 Upper End Ejector Mechanism. Adjustment. 337
288 Upper End Control. Adjustment. 338
289 Hand Control Lever. Adjustment. 339
290 Control Unit Valve Linkages. Adjustments. 340
291 Fuze Socket. Adjustment. 341
292 Fuze Setter Drive Shafting. Adjustment. 341

xvi
 
Figure Title Page
 
CHAPTER 11
   
293 Power Drive for 5-inch Projectile Hoist and 5-inch Powder Hoist. Vickers. General Arrangement. 342
294 Power Unit for 5-inch Projectile Hoist and 5-inch Powder Hoist. Vickers. General Arrangement. 344
295 Projectile Hoist Drive Unit. Vickers. Installed Arrangement. 346
296 Projectile Hoist Drive Unit. Vickers. Sectional View. 347
297 Hoist Drive Unit. Vickers. Hydraulic Motor. Section. 348
298 Hydraulic Brake and Hand Drive Unit. Vickers. Section. 349
299 Timing Mechanism. Vickers. Schematic. 350
300 Projectile Hoist Power Drive Control Actions. Vickers. Idling. Hydraulic Schematic. 351
301 Projectile Hoist Power Drive Control Actions. Vickers. Start of Hoisting. Hydraulic Schematic. 353
302 Projectile Hoist Power Drive Control Actions. Vickers. Acceleration to Full Speed. Hydraulic Schematic. 354
303 Projectile Hoist Power Drive Control Actions. Vickers Full Speed Hoisting. Hydraulic Schematic. 355
304 Projectile Hoist Power Drive Control Actions. Vickers. Deceleration of Hoisting. Hydraulic Schematic. 356
305 Projectile Hoist Power Drive Control Actions. Vickers. Mechanical Schematic. 358
306 No-Reverse Latch Connecting Link. Adjustment. 364
307 Preliminary Deceleration Cam Adjustment. 365
308 Preliminary Rocker Arm Adjustment. 365
 
Figure Title Page
 
309 Final Rocker Arm Adjustment. 335
 
CHAPTER 12
 
310 5-inch Projectile Hoist Power Unit. Northern. Installed Arrangement. 372
311 Relief Valve N and Auxiliary Relief Valve A. Section. 373
312 5-inch Projectile Hoist Drive Unit. Northern. Installed Arrangement. 374
313 Projectile Hoist Drive Unit. Northern. Sectional View. 375
314 Projectile Hoist Drive Unit Hydraulic Motor. Section. 377
315 Valve Block and Timing Mechanism. Disassembled. 378
316 Metering Valve AA and Shuttle Valve BB. Section. 379
317 Hydraulic Brake and Hand Drive Unit. Northern. Section. 380
318 Power Drive Control Actions. Northern. Idling. Hydraulic Schematic. 382
319 Power Drive Control Actions. Northern. Start of Hoisting. Hydraulic Schematic. 383
320 Power Drive Control Actions. Northern. Deceleration of Hoisting. Hydraulic Schematic. 384
321 Relief Valve N, Auxiliary Relief Valve. Adjustments. 389
322 Hoist Drive Deceleration Valve. Deceleration and Timing Adjustments. 390
 
CHAPTER 13
 
323 5-inch Powder Hoist Mk 4. General Arrangement. 394
324 Powder Hoist Lower End. Section. 395
325 Powder Hoist Upper End. Section. 395
326 Control Gear Interlock Mechanism. 397
327 Manual Drive Control. Vickers. 398

xvii
 
Figure Title Page
 
328 Manual Drive Control. Northern. 399
329 Mechanical System Control. Schematic. 400
330 Lower End Control Gear Interlock Assembly. Operation. Doors Closed Position. 401
331 Lower End Control Gear Interlock Assembly. Operation. Doors Open Position. 402
332 Upper End. Adjustments. 403
333 Flight Position. Adjustments. 404
 
CHAPTER 14
 
334 Powder Hoist Power Drive. Vickers. General Arrangement. 406
335 Powder Hoist Drive Unit. Vickers. Sectional View. 409
336 Valve Block. Disassembled. 410
337 Power Drive Control Actions. Idling. Hydraulic Schematic. 413
338 Power Drive Control Actions. Start of Hoisting. Hydraulic Schematic. 414
339 Power Drive Control Actions. Full Speed Hoisting. Hydraulic Schematic. 415
340 Power Drive Control Actions. Deceleration of Hoisting. Hydraulic Schematic. 416
341 Power Drive Control Actions. Lowering. Hydraulic Schematic. 417
342 Mechanical System Control. Schematic. 418
343 Deceleration Valve E and Latch Valve F. Adjustments. 424
344 Deceleration Needle Valves H and L, and Pause Needles Valve P. Adjustments. 424
345 Relief Valve R and Foot Valve K. Adjustments. 425
 
Figure Title Page
 
CHAPTER 15
 
346 Powder Hoist Drive Unit. Northern. Section. 428
347 Hydraulic Motor Valve Plate. Northern. 429
348 Valve Block. Northern. Disassembled. 431
349 Timing Mechanism. Disassembled. 432
350 Power Drive Control Actions. Idling. Hydraulic Schematic. 434
351 Power Drive Control Action. Start of Hoisting. Hydraulic Schematic. 436
352 Power Drive Control Actions. Deceleration of Hoisting. Hydraulic Schematic. 437
353 Power Drive Control Actions. Lowering. Hydraulic Schematic. 438
354 Manual Operation. Hoisting. 439
355 Manual Operation. Lowering. 439
356 Auxiliary Relief Valve A and Pilot Relief Valve N1. Adjustments. 443
357 Bypass Creeper Valve O. Adjustment. 444
358 Deceleration Valve K. Adjustment. 444
359 Foot Valve Q1. Adjustment. 444
 
CHAPTER 16
   
360 Fuze Setting Indicator-Regulator Mk 8 Mod 4. Front View. 447
361 Fuze Setting Indicator-Regulator Mk 8 Mod 4. Front View. Cover Removed. 448
362 Fuze Setting Indicator-Regulator Mk 8 Mod 4. Interior. 449
363 Fuze Setting Indicator-Regulator Mk 8 Mod 7. Front View. 350

426946 0 - 57 - 2


xviii
 
Figure Title Page
 
364 Fuze Setting Indicator-Regulator Mechanical Schematic. 451
365 Low-Speed Indicating Synchro and Follow-up Head for Fuze Setting Indicator-Regulator Mk 8. 452
366 High-Speed Indicating Synchro and Follow-up Head. 453
367 Power Control Head. 454
368 Overload Device for Fuze Setting Indicator-Regulator Mk 8. 455
369 Traveling Stop Nut for Fuze Setting Indicator-Regulator Mk 8. 457
370 Fuze Setting Indicator-Regulator Operation. Automatic Control. Running on Low-Speed Head. Electrical Circuit Diagram. 460
371 Fuze Setting Indicator-Regulator Operation. Automatic Control. Running on High-Speed Head. Electrical Circuit Diagram. 461
372 Fuze Setting Indicator-Regulator Operation. Automatic Control. Stationary Fuze Setting Order . Electrical Circuit Diagram. 462
373 Minimum Fuze Setting Adjustment. 465
374 Fuze Setting Indicator-Regulator Pilot Motor Damp Adjustment. 470
 
CHAPTER 17
 
375 Fuze Setting Indicator-Regulator Mk 9 Mod 0. Left Front View. 473
376 Fuze Setting Indicator-Regulator Mk 9 Mod 0. Right Rear View. 473
377 Fuze Setting Indicator-Regulator Mk 9 Mod 0. Right Front View. Covers Removed. 474
378 Fuze Setting Indicator-Regulator Mk 9. Right Rear View. Covers Removed. 475
379 High-Speed Indicating Synchro for Fuze Setting Indicator-Regulator Mk 9. 476
380 Low-Speed Indicating Synchro and Follow-Up for Fuze Setting Indicator-Regulator Mk 9. 476
 
Figure Title Page
 
381 Fuze Setting Indicator-Regulator Mk 9. Chassis Assembly. 477
382 Power Control Head. 478
383 Driving Cam Assembly. Exploded View. 479
384 Power Motor Controller. 480
385 Power Motor Resistor Unit. Assembled. 481
386 Power Motor Resistor Unit. Shield Cover Removed. 481
387 Fuze Setting Indicator-Regulator Mk 9. Mechanical Schematic. 482
388 Overload Device for Fuze Setting Indicator-Regulator Mk 9. 483
389 Traveling Stop Nut for Fuze Setting Indicator-Regulator Mk 9. 484
390 Fuze Setting Indicator-Regulator Mk 9. Front View. Chassis, Dial Plate, and Limit Stop Mechanism Removed. 485
391 Power Control Head Operation. Neutral. 487
392 Power Control Head Operation. Low Torque. 487
393 Power Control Head Operation. High Torque. 488
394 Fuze Setting Indicator-Regulator Mk 9. Electrical Circuit. Automatic Control. Stationary Fuze Setting Order. 491, 492
395 Fuze Setting Indicator-Regulator Mk 9. Electrical Circuit. Automatic Control. Running on First Contact of Power Control Head. 493, 494
396 Fuze Setting Indicator-Regulator Mk 9. Electrical Circuit. Automatic Control. Running on Second Contact of Power Control Head. 495, 496

xix
 
Figure Title Page
 
397 Fuze Setting Indicator-Regulator Mk 9. Electrical Circuit Automatic Control. Running on Low-Speed Head. 497, 498
398 Minimum Fuze Setting. Adjustment. 501
399 Circuit for Electrical Zero. Adjustment. 501
400 Power Control Head. Contact Spacing Adjustment. 502
401 Power Motor Damp. Adjustment. 503
 
CHAPTER 18
 
402 5-inch Sight Mk 36 Mod 0. General Arrangement. 505
403 5-inch Sight Mk 39 Mods 0 and 6. Mount Captain's Open Sight. General Arrangement. 506
404 5-inch Sight Mk 39 Mod 2. General Arrangement. 507
405 5-inch Sight Mk 36 Mod 0. Sight Setter's Station. 508
406 5-inch Mount Mk 32. Trainer's Station. Sight Components. 509
407 5-inch Mount Mk 32. Pointer's and Checker's Stations. Sight Components. 510
408 5-inch Sight Mk 39 Mods 0 and 6. Operating Mechanism. Sectional View. 511
409 5-inch Sight Mk 39 Mod 2. Operating Mechanism. Sectional View. 512
410 5-inch Sight Mk 39 Mods 0 and 6. Open Sight Trainer's Indicator. 513
411 5-inch Sight Mk 39 Mod 2. Open Sight Trainer's Indicator. Mounted. 513
412 5-inch Sight Mk 39 Mods 0 and 6. Open Sight Pointer's Indicator 513
413 5-inch Sight Mk 39 Mod 2. Open Sight Pointer's Indicator. 514
 
Figure Title Page
 
414 Telescope Window Wiper and De-Icer. 514
415 Sight Setter's Indicator Mk 4 Mod 0. Cover Removed. 515
416 Sight Setter's Indicator Mk 4 Mod 0. 516
417 Sight Setter's Indicator Mk 4 Mod 0. Wiring Diagram. 517
418 5N, Mk 6 Mod 1A Synchro Motor, with Dials and Gear, Sectional View. 518
419 Sight Setter's Indicator Mk 4 Mod 0. Mechanical Schematic. 518
420 5-inch Sight Mk 36 Mod 0. Mechanical Schematic. 520
421 Adjustable Flexible Coupling. Sectional View. 521
422 Flexible Coupling. Sectional View. 521
423 Boresight Mk 32 Mod 1. Installed Arrangement. 526
424 Boresight Mk 38 Mod 1. General Arrangement. 526
425 Open Sight Pointer's Indicator. Dial Adjustment. 531
426 5-inch Shield Mk 31. Right Front View. General Arrangement. Exterior. 534
427 5-inch Shield Mk 31 Interior. General Arrangement. 535
428 5-inch Shield Mk 31. Rear View. 537
429 Right Sight Hood. General Arrangement. 538
430 5-inch Mount Mk 32. Mount Captain's Station. 539
431 Case Ejection Chute. General Arrangement. 540
432 Case Ejection Chute Link. Assembled Arrangement. 540
433 Case Ejection Chute Link. Sectional Views. 541

xx
 
Figure Title Page
 
434 Case Deflection Chutes. Installed Arrangement. 541
435 5-inch Shields Mk 41 and 62. Case Deflection Chute Door Assembly. 541
436 5-inch Shields Mk 48 and 53. Case Deflection Chute Door Assembly. 542
437 Gun Port Seal Air Supply Arrangement. 542
438 Shield Ventilating System. Early Design. 543
439 Gun Port Bucklers and Bloomers. Installed Arrangement. 544
440 Gun Port Buckler and Bloomer Protection Railings. 545
441 Case Ejection Chute. Adjustment. 546
442 Roof Hatch Operating Mechanism. Adjustment. 547
 
CHAPTER 20
 
443 5-inch Mount Mk 32. Electrical Installation. Typical External Wiring Diagram. 549, 550
444 Typical Arrangement of Power System Elements. 552
445 5-inch Mounts Mk 28 and 32. Power System. Cable Connection. 554
 
Figure Title Page
 
446 Power Transfer and Distribution Panels. 555
447 Typical Push-Button Master Switches. 556
448 Training Gear Motor Controller with Fuse Protection. Wiring Diagram. 559
449 Training Gear Motor Controller with Circuit-Breaker Protection. Wiring Diagram. 560
450 Ammunition Hoist Motor Controller for CAl28, CL112, CV31, DD356, 692. Wiring Diagram. 561
451 Ammunition Hoist Motor Controller for CL55-64. Wiring Diagram. 561
452 Ammunition Hoist Motor Controller for BB-57-60, CL51-54. Wiring Diagram. 562
453 Ammunition Hoist Motor Controller for BB55, 56. Wiring Diagram. 562
454 Ammunition Hoist Motor Controller for BB61-66, CA68-75, CB1-3, CL62-67, 79-83, 86, 87, 89-100, CV 9-19, 24-27, LSV3. Wiring Diagram. 563
455 Rammer Motor Controller. Cutler-Hammer Type. Wiring Diagram. 563
456 Rammer Motor Controller. General Electric Type. Wiring Diagram. 563
457 Ventilating Motor Controller. Westinghouse Type. Wiring Diagram. 563
458 Ventilating Motor Controller. General Electric Type. 564
459 Fuze Setting Motor Controller. Wiring Diagram. 564
460 Firing and Lighting Circuit Mk 21 Mod 4. Wiring Diagram. 569
461 Firing Circuit. Component Arrangement. 570

xxi
 
Figure Title Page
 
462 Firing and Battle-Station Lighting Circuit Components. Pointer's and Checker's Stations. 571
463 Firing and Battle-Station Lighting Circuit Components. Sight Setter's Station. 572
464 5-inch Mount Mk 38. Mount Captain's Station. Electric Installation. 573
465 Trainer's Station. Electrical Installation. 574
466 Firing Key Mk 16 Mod 8. Sectional View. 575
467 Clear Sector Warning System and Firing Panel. Wiring Diagram. 576
 
Figure Title Page
 
468 Instrument and Battle-Station Lighting. Arrangement of Elements. 577
469 General Lighting Circuit. Component Arrangement. 578
470 Fire Control System. Component Arrangement. 579
471 Communication Circuits. Component Arrangement. 582
 
CHAPTER 21
 
472 Standard Tools for 5-inch Mounts Mk 28, 32, 38. 589

xxii
 

Drawing of gun handling room.
Frontispiece. 5. inch 38-caliber Twin Mount. Installed Arrangement.

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