AS-3577_antenna_serv_user_TM11-5985-371-12P_1986.pdf

TABLE OF CONTENTS i HOW TO USE THIS MANUAL iii EQUIPMENT DESCRIPTION DATA 1-3 OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES 2-1 ASSEMBLY AND PREPARATION FOR USE 2-3 PREPARATION FOR MOVEMENT 2-23 ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES 4-5 ORGANIZATIONAL TROUBLESHOOTING 4-11 MAINTENANCE ALLOCATION CHART B-4 REPAIR PARTS AND SPECIAL TOOLS LIST F-1 GLOSSARY GLOSSARY 1 INDEX Index 1 TM 11-5985-371-12the products of decomposition are toxic and irritating.Since TRICHLOROTRIFLUOROETHANE dissolves natural oils, prolonged contact with skin should be avoided. When necessary, use gloves which the solvent cannot penetrate. If the solvent is taken internally, consult a physician immediately. Lifting heavy equipment incorrectly can cause serious injury. Do not try to lift more than 35 lbs by yourself. Get a helper.Bend legs while lifting and dont sup- port heavy weight with your back. D Technical ManualHEADQUARTERS DEPARTMENT OF THE ARMY No. 11-5985-371-12 the AS-3577/GRC includes a sledge hammer, a 100-foot tape measure, a tool kit for installation and maintenance, and a carrying case. Refer to appendix F for details. b. Components of Antenna Mast Assembly AB-86/GRA-4. Components of the AB-86/GRA-4are described andillustratedin TM11-2651.The following components which are part of the AB-86/GRA-4 are not furnished when the AB-86/GRA-4 is part of Antenna AS-3577/GRC: (1) Antenna Adapter MX-857/GRA-4 (2) Counterpoise CP-12 (3) Wire W-128 1-12. Equipment Data. a. Technical Characteristics Frequency range . . . . . . . . . . . . 2-30 MHZ Radiation pattern . . . . . . . . . . . Omnidirectional 1-6 TM 11-5985-371-12 failure to follow the requirements of TB SIG 291, could result in WARNINGS injury or death. If you suspect that the antenna, do not operation, rope off a. General. power lines have made accidental contact with touch the antenna assembly, immediately stop the antenna area, and notify your supervisor. (1) Warnings.Read the WARNINGS immediately following the cover page of the manual prior to installing the antenna assembly and keep them in mind during installation. 2-3 TM 11-5985-371-12attach the driving stud to the coupler, making sure the driving stud bottoms firmly on the ground rod. (c) Put on protective goggles and hammer the ground rod into the ground approximately 15 away from the vertical and the mast base, until about 5 inches of the ground rod and coupler are above ground. (d) Remove the driving stud.Connect a second ground rod to the first with the coupler; and a third ground rod to the second with a coupler. Place a coupler and the driving stud on top of the third ground rod. (3) Antenna Stake B. (a) Connect the tape measure between guy stakes B and C. Measure and make a mark on the ground 13 feet from guy stake C. Connect the tape measure from the mast base through the 13-foot mark and measure 60 feet from the mast base. Mark the s pot l (b) Repeat steps (2)(b), (c), and (d) above. (4) Antenna Stake C. (a) Measure 60 feet from the mast base in a direction opposite the direc- tion of antenna stake A. Mark the spot. (b) Repeat steps (2)(b), (c), and (d) above. (5) Antenna Stake D. (a) Measure 60 feet from the mast base in a direction opposite the direc- tion of antenna stake B. Mark the spot. (b) Repeat steps (2)(b), (c), and (d) above. 2-7 TM 11-5985-371-12 and 17 feet from the corner stakes on the 70-foot sides. Attach the 24 orange warning strips as shown.Alternate between the 3/4-inch and the 2-inch wide warning strips. (4) Antenna Stake Lanyards.To support the antenna stakes, tie each lanyard to the top of the adjacent safety rope stake at each corner. Coil and lay the remaining part of the lanyard on the ground near the safety rope stake. 2-6. Preparation for Movement. WARNING If the antenna is connected to a transmitter, make certain the radio operator has transmitter before area. Do not try to take disconnected the antenna rf cable from the entering the roped off rf radiation hazard down the antenna during an electrical storm. 2-23 TM ll-5985-371-12 see illustration on page 2-5).Person 2 stands near the mast base on the side of the mast opposite person 1. 2-27 TM 11-5985-371-12 replace with a known good resistor(s). (3) Check the resistance between the outer connectors . The correct reading is 600 ohms. (4) Replace the front plate with the 20 screws . 4-16 . TM 11-5985-371-12 replace the four wingnuts securing the balun to the mast and balun clamp. Before tightening the wingnuts , slide the balun and balun clamp up or down the mast until the balun is 6.5 feet from ground level. Secure the four wingnuts . (2) Connect the antenna wires to the antenna wire connectors on top of the balun. (3) Connect the cable connector to the rf connector on the balun. (4) Notify the radio operator to reconnect the antenna rf cable to the radio. 4-19 TM 11-5985-371-12 wrap in a canvas tarp or waterproof cover. 4-22. Packing for Shipment.If available, use the packing materials and shipping cartons in which the equipment was shipped,and reverse the unpacking procedures in paragraphs 4-4 and 4-5. 4-24 TM 11-5985-371-12 use it to request or requisition the item. d.Column 4 - Description.Indicates Federal item name and, if required, a description to identify the item.The last line for each item indicates the Federal Supply Code for Manufacturer (FSCM) in parentheses followed by the part number. e.Column 5 - Unit of Measure (U/M).Indicates the measure used in performing the actual maintenance function.This measure is expressed by a two-character alphabetical abbreviation (e.g., ea, in, pr). If the unit of measure differs from the unit of issue, requisition the lowest unit of issue that will satisfy your requirements. E-1 TM11-5985-371-12 special tools; special test, measurement, and diagnostic equipment (TMDE), and other special support equipment required for performance of organizational maintenance of the AS-3577/GRC. It authorizes the requisitioning, issue, and disposition of spares, repair parts and special tools as indicated by the source, maintenance and recoverability (SMR) codes. F-2. General. This Repair Parts and Special Tools List is divided into the following sections: a. Section II. Repair Parts List. A list of spares and repair parts authorized by this RPSTL for use in the performance of maintenance.The list also includes parts which must be removed for replacement of the authorized parts. Parts lists are composed of functional groups in ascending numeric sequence, with the parts in each group listed in ascending item number sequence. Figure numbers are listed directly beneath the group header. b. Section III. Special Tools List. Not applicable. c. Section IV. National Stock Number and Part Number Index. A list, in National item identification number (NIIN) sequence, of all National stock numbered items appearing in the listings, followed by a list in alphameric sequence of all part numbers appearing in the listings. National stock numbers and part numbers are cross- -referenced to each illustration figure and item number appearance. F-3. Explanation of Columns (Section II and III). a. Item No. (Column (1). Indicates the number used to identify items called out in the illustration. b. SMR Code (Column (2). The source, maintenance, and recoverability (SMR) code is a five-position code containing supply/requisitioning information,maintenance category authorization criteria, and disposition instruction, as shown in the following breakout: SourceMaintenance CodeCode 1st two positions How you get an item.3d position4th position Who can install,Who can do replace or usecomplete the item.repair (see note) on the item. Recoverability Code Who determines disposition action on an unserviceable item. F-1 TM 11-5985-371-12 use the applicable NSN to request/requisition items with these source codes. They are authorized to the category indicated by the code entered in the third position of the SMR code. NOTE Items coded PC are subject to deterioration. Items with these codes are not to be requested/requisitioned individual- ly. They are part of a kit which is authorized to the maintenance category indicated in the third position of the SMR code. The complete kit must be requisitioned and applied. Items with these codes are not to be requested/requisitioned individually. They must be made from bulk material which is identified by the part number in the description and usable on code (UOC) column and listed in the Bulk Material group of the repair parts list. If the item is authorized to you by the third position code of the SMR code, but the source code indicates it is made at a higher category, order the item from the higher category of maintenance. AO Assembled by org/Items with these codes are not to be requested/requisitioned individual AF AH AL AD - AVUM category Iy. The parts that make up the assembled item must be requisitioned Assembled by DS/or fabricated and assembled at the category of maintenance indicated AVIM categoryby the source code.If the third positon code of the SMR code Assembled byauthorizes you to replace the item, but the source code indicates the GS categoryitem is assembled at a higher category, order the item from the higher Assembled by SRAcategory of maintenance. Assembled by Depot XA Do not requisition an “XA” coded item. Order its next higher assembly. XB If an “XB” item is not available from salvage, order it using the FSCM and part number given. XC Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturers part number. XD Item is not stocked. Order on “XD” coded item through normal supply channals using the FSCM and part number given, if no NSN is available. F-2 TM 11-5985-371-12&P NOTE Cannibalization or controlled exchange, when authorized, may be used as a source of supply for items with the above source codes, except for those source coded “XA” or those aircraft support items restricted by requirements of AR 750-1. (2) Maintenance Code. Maintenance codes tell you the category of maintenance authorized to USE and REPAIR support items. The maintenance codes are entered in the third and fourth positions of the SMR code as follows: (a) The maintenance code entered in the third position tells you the lowest maintenance category authorized to remove, replace, and use an item. The maintenance code entered in the third position will indicate authorization to one of the following categories of maintenance. CodeApplication/Explanation cCrew or operator maintenance done within organizational or aviation maintenance. O Organizational or aviation unit category can remove, replace, and use the item. FDirect support or aviation intermediate category can remove, replace, and use the item. HGeneral support category can remove, replace, and use the item. LSpecialized repair activity can remove, replace, and use the item. D Depot category can remove, replace, and use the item. (b) The maintenance code entered in the fourth position tells whether or not the item is to be repaired and identifies the lowest maintenance category with the capability to da complete repair (i.e., perform all authorized repair functions). This position will contain one of the following maintenance codes: NOTE Some limited repair may be done on the item at a lower category of maintenance, if authorized by the Maintenance Allocation Chart (MAC) and SMR codes. CodeApplication/Explanation O Organizational or aviation unit is the lowest category that can do complete repair of the item. FDirect support or aviation intermediate is the lowest category that can do complete repair of the item. H General support is the lowest category that can do complete repair of the item, LSpecialized repair activity (designate the specialized repair activity) is the lowest category that can do complete repair of the item. D Depot is the lowest category that can do complete repair of the item. zNonreparable. No repair is authorized. BNo repair is authorized. (No parts or special tools are authorized for the maintenance of a “B” coded item. ) However, the item may be reconditioned by adjusting, lubricating, etc., at the user category. F-3 TM 11-5985-371-12&P (3) Recoverability Code. Recoverability codes are assigned to items to indicate the disposition action on unserviceable items. The recoverability code is entered in the fifth position of the SMR Code as follows: Recoverability codesApplication/Explanation zNonreparable item. When unserviceable, condemn and dispose of the item at the category of maintenance shown in the third position of SMR Code. O Reparable item. When uneconomically reparable, condemn and dispose of the item at organizational or aviation unit category. F Reparable item. When uneconomically reparable, condemn and dispose of the item at the direct support or aviation intermediate category. H Reparable item. When uneconomically reparable, condemn and dispose of the item at general support category. D Reparable item. When beyond lower level repair capability, return to depot. Condemnation and disposal of item not authorized below depot category. L Reparable item. Condemnation and disposal not authorized below specialized repair activity (SRA). A Item requires special handling or condemnation procedures because of specific reasons (e.g., precious metal content, high dollar value, critical material, or hazardous material). Refer to appropriate manuals/directives for specific instructions. c. FSCM (Column (3). The Federal Supply Code for Manufacturer (FSCM) is a 5-digit numeric code which is used to identify the manufacturer, distributor, or Government agency, etc., that supplies the item. d. Part Number (Column (4). Indicates the primary number used by the manufacturer (individual, company, firm, corporation, or Government activity), which controls the design and characteristics of the item by means of its engineering drawings, specifications, standards, and inspection requirements to identify an item or range of items. NOTE When you use a NSN to requisition an item, the item you receive may have a different part number from the part ordered. e. Description and Usable on Code (UOC)(Column (5). This column includes the following information. (1) The Federal item name and, when required, a minimum description to identify the item. (2) Items that are included in kits and sets are listed below the name of the kit or set. (3) The statement “END OF FIGURE” appears just below the last item description in Column (5) for a given figure in both section II and section Ill. f. Qty (Column (6). Indicates the quantity of the item used in the breakout shown on the illustration figure, which is prepared for a functional group, subfunctional group, or an assembly. A “V” appearing in this column in lieu of a quantity indicates that the quantity is variable and the quantity may vary from application to application. F-4