AN-GRC-87_AN-VRC-34_serv2_TM11-5820-453-20_1963.pdf

TM 11-5820-453-20 D E P A R T M E N T O F T H E A R M Y T E C H N I C A L M A N U A L ORGANIZATIONAL MAINTENANCE MANUAL RADIO SETS AN/GRC-87 AND AN/VRC-34 HEADQUARTERS, DEPARTMENT OF THE ARMY 10 APRIL 1963 WARNING Be careful when working on the high-voltage circuits. Serious injury or death may result if safety precautions are not observed. DONT TAKE CHANCES! EXTREMELY DANGEROUS VOLTAGES EXIST IN THE FOLLOWING UNITS: RECEIVER-TRANSMITTER RT-77(*)/GRC-9 .425 to 580 volts DYNAMOTOR-POWER SUPPLY DY-88/GRC-9 .580 volts DYNAMOTOR-POWER SUPPLY DY-105(*)/GRC-9X.580 volts GENERATOR, DIRECT CURRENT G-43/G .425 volts TM 11-5820-453-20 C 1 CHANGEHEADQUARTERS DEPARTMENT OF THE ARMY NO. 1WASHINGTON, D.C., 22 September 1976 Organizational Maintenance Manual Radio Sets AN/GRC- 87 AND AN/VRC-34 TM 11-5820-4 53-20, 10 April 1963 is changed as follows: Page 2, paragraph 1a, line 3. Delete “The manual includes disassembly and repackaging instructions for shipment and limited storage of the equipment. Subparagraph b. Delete subparagraph b and substitute: b. The reporting of errors, omissions, and recommendations for improving this publication by the individual user is encouraged. Reports should be submitted on DA Form 2028 (Recommended Changed to Publications and Blank Forms) and forwarded direct to Commander, US Army Electronics Command, ATTN: DRSEL-MA-Q, Fort Monmouth, NJ 07703. NOTE For applicable forms and records, refer to TM 11-5820-453-10. c. The Equipment Serviceability Criteria for Radio Sets AN/GRC-87 and AN/VRC-34 is contained in TM 11-5820-453-ESC. d. For procedures, forms and records, and inspections required during administrative storage of this equipment refer to TM 740-90-1. e. For instructions on the destruction of equipment, refer to TM 750-244-2. Paragraph 2. Delete paragraph 2 and substitute: 2. Indexes of Publications a. DA Pam 310-4. Refer to the latest issue of DA Pam 310-4 to determine whether there are new editions, changes, or additional publications pertaining to the equipment. b. DA Pam 310-7. Refer to DA Pam 310-7 K1 determine whether there are modification work orders (MWOs) pertaining to the equipment. Page 36, appendix I. Delete appendix I and substitute: APPENDIX I REFERENCES DA Pam 310-4Index of Technical Manuals, Technical Bulletins, Supply Manuals, Supply Bulletins, and Lubrication Orders. DA Pam 310-7U.S. Army Equipment Index of Modification Work Orders. SB 11-131Vehicular Radio Sets and Authorized Installations. SB 38-100Preservation, Packaging, Packing and Marking Materials, Supplies, and Equipment Used By the Army. TM 11-5122Direct Current Generator G-43/G. TM 11-5820-453-10Operators Manual, Radio Set AN/GRC-87, and AN/VRC-34. TM 11-5820-453-20POrganizational Maintenance Repair Parts and Special Tool Lists. Radio Sets AN/ GRC-87 and AN/VRC-34 TM 11-5820-479-12POperator and Organizational Maintenance Repair Parts and special Tools List and Maintenance Allocation Chart: Mast Base MP-65. MP-65A, and MP-65B. TM 11-5965-213-14PMaintenance Repair Parts and special Tools List and Maintenance Allocation Chart for Permanent Magnet Loudspeaker LS-203/U (including LS-7 and LS-7A). TM 11-5965-267-15POperator, Organizational, Field and Depot Maintenance Repair Parts and Special Tools List and Maintenance Allocation Chart: Headset. Electrical l H-16/U. TM 11-6625-203-12Operation and Organizational Maintenance Multimeter AN/URM-105, including Multimeter ME-77/U. 1 TM 11-6625-274-12Operators and Organizational Maintenance Manual. Test Sets, Electron Tube TV-7/U, TV-7A/U, TV-7B/U, and TV-7D/U. TM 38-750The Army Maintenance Management System (TAMMS). TM 740-90-1Administrative Storage of Equipment. TM 750-244-2Procedures for Destruction of Electronic Material to Prevent Enemy Use (Electronics Command). Page 37, appendix II. Delete appendix II and substitute: APPENDIX II MAINTENANCE ALLOCATION Section 1. INTRODUCTION 1. General This appendix provides a summary of the maintenance operations for the AN/GRC-87 and AN/VRC-34. It authorizes categories of maintenance for specific maintenance functions on repairable items and components and the tools and equipment required to perform each function. This appendix may be used as an aid in planning maintenance operations. 2. Maintenance Function Maintenance functions will be limited to and defined as follows: a. Inspect. To determine the serviceability of an item by comparing its physical, mechanical, and/or electrical characteristics with established standards through examination. b. Test. To verify serviceability and to detect incipient failure by measuring the mechanical or electrical characteristics of an item and comparing those characteristics with prescribed standards. c. Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean, preserve, drain, paint, or to replenish fuel / lubricants / hydraulic fluids or compressed air supplies. d. Adjust. Maintain within prescribed limits by bringing into proper or exact position, or by setting the operating characteristics to the specified parameters. e. Align. To adjust specified variable elements of an item to about optimum or desired performance. f. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test measuring and diagnostic equipment used in precision measurement. Consists of the comparison of two instruments, one of which is a certified standard of known accuracy. to detect and adjust any discrepancy in the accuracy of the instrument being compared. g. Install. The act of emplacing, seating, or fixing into position an item, part, module (component or assembly) in a manner to allow the proper functioning of the equipment/system. h. Replace. The act of substituting a serviceable like- type part, subassembly, model (component or assembly) for an unserviceable counterpart. i. Repair. The application of maintenance services (inspect. test. service, adjust, align, calibrate, replace) or other maintenance actions (welding, grinding, riveting, straightening, facing, remachining, or resurfacing) to restore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module / component / assembly, end item or system. j. Overhaul. That periodic maintenance effort (service /action) necessary to restore an item to a completely serviceable/operational condition as prescribed by maintenance standards (e.g., (DMWR) in appropriate technical publications. Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not normally return an item to like-new condition. k. Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipment to a like- new condition in accordance with original manufacturing standards. Rebuild is the highest degree of materiel maintenance applied to Army equipment. The rebuild operation includes the act of returning to zero those age measurements (hours, miles, etc.) considered in classifying Army equipment / components 3. Column Entries a. Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to identify 2 equipment required to perform the maintenance functions d. National/NATO Stock Number. This column lists the National/NATO stock number of the specific tool or test equipment. e. Tool Number: This column lists the manufacturers part number of the tool followed by the Federal Supply Code for manufacturers (5-digit) in parentheses. A2-5. Remarks (Sec IV). a. Reference Code. This code refers to the appropriate item in section II, column 6. b. Remarks. This column provides the required explanatory information necessary to clarify items appearing in section II. 3 SECTION II MAINTENANCE ALLOCATION CHART FOR RADIO SETS AN/GRC-87 AND AN/VRC-34 (1) GROUP NUMBER (2) COMPONENT ASSEMBLY (3) MAINTENANCE FUNCTION (4) MAINTENANCE CATEGORY COFHD (5) TOOLS AND EQPT. (6) REMARKS 00RADIO SETS AN/GRC-87 AND AN/VRC-34Inspect0.1 Service0.1 Install0.215 Test0.25,12,13A Test0.53,7,9,10,B 12,13 Test0.81,2,4,6,A 7,8,10, 12,13,16, 17 Test3.01,2,4,6,D 7,8,10,11 13,14,16, 17 Replace0.215 Repair0.513 Align1.03,7,9,10, 12,13 Overhaul16.013,14 Repair0.1P 0.1ANTENNA ASSEMBLIES AT-101/GRC-9 AND AT-102/GRC-9 (AN/GRC-87 ONLY) Inspect Service 01 02 Install1.015E Replace1.015E Repair0.513F 02DYNAMOTOR-POWER SUPPLIES DY-88/GRC-9,Inspect0.1 DY-105/GRC-9K, DY-105A/GRC-9X, ANDService0.1 DY-105B/GRC-9XInstall0.215 Test0.15A Test0.57,13G Test1.06,7,17D Replace0.215 Repair0.813 Align0.513 Align1.06,13,17 Repair1.013,14G Repair0.1P 03DIRECT CURRENT GENERATOR G-43/G (AN/GRC-87 ONLY)H 04RECEIVER-TRANSMITTER RT-77/GRC-9 AND RT-77A/GRC-9 Inspect Service 0.1 0.2 Install0.1 Test0.25,12,15A Test0.53,7,9,10B 12,13 Test0.51,2,4,6,C 8,10,12 Repair0.113,16,17P Test3.01,2,4,6,D 7,8,10,11 13,14,16 17 Replace0.215 Repair0.510,13I Repair1.013,14J Align1.02,10,13K 17 Overhaul15.013,14 05HEADSET H-16/UL 06LOUDSPEAKER LS-203/U AND LS-7AM 07MICROPHONE M-52/U 4 SECTION II MAINTENANCE ALLOCATION CHART FOR RADIO SETS AN/GRC-87 AND AN/ VRC-34 (1) GROUP NUMBER (2) COMPONENT ASSEMBLY (3) MAINTENANCE FUNCTION (4) MAINTENANCE CATEGORY COFHD (5) TOOLS AND EQUIPMENT 00RADIO SETS AN/GRC-87 AND AN/VRC-34Inspect Service Install Test1 Test2 Test3 0.1 0.1 0.2 0.2 0.8 15 5,12,15 3,7,9,10,12,13 2,4,6,7,8,10. 12,13,16 Test43.02,4,6,7,8,10, 12,13,16 Replace0.215 Repair0.513 Align1.03,7,9,10.12,13 Align1.03,7,9,10,12,13 Overhaul16.013,14 01Antenna Assemblies AT-101/GRC-9,Inspect0.1 AT-102/GRC-9 (AN/GRC-87 only)Service0.2 Install51.015 Replace51.015 Repair0.513 02Dynamotor -Power Supplies DY-88/GRC-9,Inspect0.1 DY-105/GRC-9X, DY-105A/GRC-9X, DY-105B/GRC-9XService0.1 Install0.215 Test10.15 Test0.57 Test1.06,7,16 Replace0.215 Repair0.813 Align0.513 Align1.06,13,16 0201Dynamotors D201 and DY-134/GRC-9XTest60.57,13 Replace70.515 Repair81.013,14 Align0.513,16 03Direct Current Generator G-43/G (AN/GRC-87 only) (Refer to TM 11-5122 for maintenance functions) 04Receiver-Transmitter RT-77/GRC-9, RT-77A/GRC-9Inspect0.1 Service0.2 Install0.1 Test10.25,12,15 Test20.53,7,9,10,12,13 Test30.52,4,6,8,10,12, 13,16 Test43.0 Replace0.215 Repair60.513 Repair81.013,14 Align60.510.13 Align1.02,10,13,16 05Accessories9Inspect0.1 Service0.1 Install0.1 Repair0.513 Replace0.1 Test0.21 06Cable AssemblyReplace0.1 Test0.15 Repair1.013 (1)Operational Check(6)Plus minor repair/alignment (2)Frequency, tube checks, continuity(7)Result of operation checks (3)Frequency, tube checks, continuity plus voltages, output waveforms and audio frequency (8)All repairs (9)Includes Headset H-16/U, Key J-45, Loudspeaker LS-203/U, LS-7A, (4)All testsMicrophone M-52/U, and Mount MT-350/GRC-9 (5)Includes Mast Base MP-65-B, cord assemblies and bags 5 By Order of the Secretary of the Army: FRED C. WEYAND General, United States Army Official:Chief of Staff PAUL T. SMITH Major General, United States Army The Adjutant General Distribution: To be distributed in accordance with DA Form 12-51 organizational TM literature requirements for AN/GRC- 87 and AN/VRC-34 Radio Sets. * U.S. GOVERNMENT PRINTING OFFICE: 1976-665668-848 6 SECTION IV REMARKS REFERENCE CODE REMARKS AOPERATIONAL CHECKS AND TUBE CHECKS. BFREQUENCY, TUBE CHECKS, CONTINUITY. C(2) PLUS VOLTAGES, OUTPUT WAVEFORMS AND AUDIO FREQUENCY. DALL TESTING. EINCLUDES MAST BASE, MP-65B, CORD ASSEMBLIES AND BAGS. FMP-65B REPAIRED IAW TM 11-5020-479-12P. GD201 AND DY-134/GRC-9X. HSEE TM 11-5122. IMINOR REPAIR AND ALIGNMENT. JALL REPAIRS. KCOMPLETE ALIGNMENT. LSEE TM 11-5965-267-15P MSEE TM 11-5965-213-14P NLIMITED TO MECHANICAL REPAIRS. O P SEE TM 11-6625-682-15 BY REPLACEMENT FUSES, LAMPS, KNOBS, LENS CAPS AND CABLE ASSEMBLY. 7 By Order of the Secretary of the Army: BERNARD W. ROGERS General, United States Army Official: Chief of Staff J. C. PENNINGTON Brigadier General, United States Army The Adjutant General Distribution: To be distributed in accordance with DA Form 12-51, Organizational TM literature requirements for AN/GRC-87 and AN/VRC-34 radio sets. * U.S. GOVERNMENT PRINTING OFFICE: 1978-765-096/653 Changes in force: C 1 and C 2 TM 11-5820-453-20 C 2 CHANGEHEADQUARTERS, DEPARTMENT OF THE ARMY NO. 2 WASHINGTON, D C., 31 March 1978 ORGANIZATIONAL MAINTENANCE MANUAL RADIO SET AN/GRC-87 (NSN 5820-00-889-4277) 12 VOLT (NSN 5820-00-223-7547) 24 VOLT; AND RADIO SET AN/VRC-34 (NSN 5820-00-889-4276) 12 VOLT (NSN 5820-00-223-7414) 24 VOLT This change is current as of September 1977 TM 11-5820-453-20, 10 April 1963, is changed as follows: The title of the manual is changed as shown above. Page 37. Appendix II is superseded as follows: APPENDIX II MAINTENANCE ALLOCATION Section 1. INTRODUCTION A2-1. General This appendix provides a summary of the maintenance operations for Radio Set AN/ GRC- 87 and Radio Set AN/VRC-34. It authorizes categories of maintenance for specific maintenance functions on repairable items and components and the tools and equipment required to perform each function. This appendix may be used as an aid in planning maintenance operations. A2-2. Maintenance Function Maintenance functions will be limited to and defined as follows: a. Inspect. To determine the serviceability of an item by comparing its physical, mechanical, and/or electrical characteristics with established standards through examination. b. Test. To verify serviceability and to detect incipient failure by measuring the mechanical or electrical characteristics of an item and comparing those characteristics with prescribed standards. c. Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean (decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed air supplies. d. Adjust. To maintain, within prescribed limits, by bringing into proper or exact position, or by setting the operating characteristics to the specified parameters. e. Align. To adjust specified variable elements of an item to bring about optimum or desired performance. f. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test measuring and diagnostic equipments used in precision measurement. Consists of comparisons of two instruments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being compared. g. Install. The act of emplacing, seating, or fixing into position an item, part module 1 (component or assembly) in a manner to allow the proper functioning of the equipment or system. h. Replace. The act of substituting a serviceable like type part, subassembly, or module (component or assembly) for an unserviceable counterpart. i. Repair. The application of maintenance services (inspect, test, service, adjust, align, calibrate, replace) or other maintenance action