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1、TM 11-5985-263-15 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 OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOL LISTS This copy is a reprint which includes current pages from Changes 1 and 2. The t
2、itle was changed by Change 2. MAST AB-903/G (NSN 5985-00-933-2197) H E A D Q U A R T E R S, D E P A R T M E N T O F T H E A R M Y MAY 1970 TM 11-5985-263-15 CONDENSED OPERATING INSTRUCTIONS FORANTENNA MAST AB-903/G TO RAISE 1. 2. 3. 4. 5. 6. MAST, HAND-OPERATED: REMOVE PIN A . RELEASE SPRING RETAINE
3、R B. EXTRACT LOCKING PIN C AND ROTATE 90 TO LOCK-OUT POSITION. CRANK HANDLE D IN DIRECTION SHOWN. C A U T I O N :DO NOT RAISE MAST TO FULL HEIGHT IF WINDS ARE IN EXCESS OF 35 MPH OR MAST IS OUT OF VERTICAL POSITION BY MORE THAN 7. CRANK APPROXIMATELY 54 TURNS TO FULL UP POSITION. LOCK THE MAST IN UP
4、 POSITION WITH LOCKING PIN C. TO LOWER MAST, HAND-OPERATED: 7. 8. 9. 10. EXTRACT LOCKING PIN C AND ROTATE 90 TO LOCK-OUT POSITION. CRANK HANDLE D IN DIRECTION SHOWN. CRANK UNTIL DESIRED POSITION IS REACHED. ENGAGE LOCKING PIN C. EL5985263-12-TM-11 x Condensed operating instructions for Antenna Mast
5、AB903/G. WARNING Contact between the antenna elements, antenna mast, and high voltage sources must be avoided at all times. Maintain a safe distance (twice the height of the antenna) when erecting and operating the antenna in the vicinity of high-tension lines. Make sure that all instructions coveri
6、ng whip antennas and antenna masts detailed in TB SIG 291 are met before attempting to erect or operate the antenna equipment. *TM 11-5985-263-15 TECHNICAL MANUAL HEADQUARTERS DEPARTMENT OF THE ARMY No. 11-5985-263-15 WASHINGTON, DC, 20 May 1970 Paragraph CHAPTER 1. Section I. II. CHAPTER 2. Section
7、 I. II. III. CHAPTER 3. 4. Section I. II. CHAPTER 5. 6. Section I. II. CHAPTER 7. 8. 9. Section I. II. APPENDIX A. B. Section I. II. C. Section I. II. III. IV. APPENDIX D. INDEX OPERATOR, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT, AND DEPOT MAINTENANCE MANUAL MAST AB-903/G (NSN 5985-00-933-219
8、7) INTRODUCTION General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-3 Description and data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9、 . . . . . . . . . . . 1-4 1-10 INSTALLATION Service upon receipt of equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1, 2-2 Ground-mounting installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10、. . . . . 2-3 2-7 Counterpoise assembly and Antenna AS-1729/VRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8, 2-9 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1, 3-2 OPERATOR AND ORGANIZA
11、TIONAL MAINTENANCE Operators maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-6 Organizational maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
12、 4-13 MECHANICAL FUNCTIONING OF MAST AB-903/G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5-5 DIRECT SUPPORT MAINTENANCE Maintenance instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6-6 Testing procedures . .
13、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7, 6-8 GENERAL SUPPORT MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1 7-8 DEPOT MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . .
14、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1, 8-2 SHIPMENT, LIMITED STORAGE, AND DEMOLITION TO PREVENT ENEMY USE Shipment and limited storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1, 9-2 Demolition of mate
15、riel to prevent enemy use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3, 9-4 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BASIC ISSUE ITEMS Intr
16、oduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1 B-3 Basic issue items list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、. . . . . . . . . . . . . . MAINTENANCE ALLOCATION Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 C-4 Maintenance allocation chart for Mast AB-903/G . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . Tool and test equipment requirements for Mast AB-903/G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Deleted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1-1 1 - 1 2-1 2-1 2-5 3-1 4-1 4-2 5-1 6-1 6-2
20、 7-1 8-1 9-1 9-2 A-1 B-1 B-2 C-1 C-3 C-4 C-5 I-1 *This manual supersedes TM 11-5985-263-12, 14 August 1967 Change 2 i Figure 1-1. Mast AB-903/G, less ground-mounting components. Change 2 1-0 TM 11-5985-263-15 CHAPTER 1 INTRODUCTION Section 1. GENERAL 1-1. Scope a. This manual describes Mast AB-903/G
21、 (fig. 1-1) and covers its installation, operation, direct and general support, and depot maintenance. b. The basic issue items list appears in appendix B, the maintenance allocation chart appears in appendix C, and the repair parts and special tool lists appear in TM 11-5985-263-34P. NOTE Appendix
22、C is current as of June 15 1978. Appendix B is current as of 5 May 1973. 1-2. 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 per- taining to the equipment. b. DA Pam 310-7. Refer to D
23、A Pam 310-7 to determine whether there are modification work orders (MWOs) pertaining to the equipment. 1-3. Forms and Records a. Reports of Maintenance arid Unsatisfactory Equipment. Maintenance forms, records, and re- ports which are to be used by maintenance personnel at all maintenance levels ar
24、e listed in and prescribed by TM 38-750. b. Report of Packaging and Handling Deficien- cies. Fill out and forward DD Form 6 (Packaging Improvement Report) as prescribed in AR 700- 58/NAVSUPINST 4030-29/AFR 71-13/MCO P4030.29A, and DSAR 4145.8. c. Discrepancy in Shipment Report (DISREP) (SF 361). Fil
25、l out and forward Discrepancy in Shipment Report (DISREP) (SF 361) as prescribed in AR 55-38/NAVSUPINST 4610.33B/AFR 75-18/ MCO P4610.19C and DLAR 4500.15. 1-3.1. Reporting of Errors The reporting of errors, omissions, and recom- mendations for improving this publication by the individual user is en
26、couraged. Reports should be submitted on DA Form 2028 (Recommended Changes to Publications) and forwarded direct to Commander, US Army Communications and Elec- tronics Materiel Readiness Command, ATTN: DRSEL-ME-MQ, Fort Monmouth, NJ 07703. 1-3.2. Reporting Equipment Improvement Recommendations (EIR)
27、 EIRs will be prepared using Standard Form 368, Quality Deficiency Report. Insturctions for pre- paring EIRs are provided in TM 38-750, the Army Maintenance Management System, EIRs should be mailed direct to Commander, US Army Communications and Electronics Materiel Readi- ness Command, ATTN: DRSEL-
28、ME-MQ, Fort Monmouth, NJ 07703. A reply will be furnished direct to you. Section Il. DESCRIPTION AND DATA 1-4. Purpose and Use a. Mast AB-903/G provides the means to raise such antennas as Antenna AS-1729/VRC 30 feet above ground level. The retracted height of the mast is 72 inches. The mast may be
29、set up on the ground, or mounted on vehicles. The mast maybe raised to full height by handcranking. b. Figure 1-1 illustrates the general arrange- ment of the mast on the ground. 1-5. Technical Characteristics Height retracted. . . . . . . . . . . . . 6 feet. Height extended . . . . . . . . . . . .
30、29 feet, 3 inches. Method of extending mast. . . . Cable-driven telescope tubular sections activated by crank handle. Time required to raise mast25 seconds by hand. (after installation of group). Tube sizes. . . . . . . . . . . . . . . . . . . 4 1/4-inch diameter to 1 1/2-inch diameter. Number of tu
31、bular segments. 6. Installation provisions. . . . . . .Ground or vehicular. Number of guys . . . . . . . . . . . . . 6 for ground installation. Number of stakes . . . . . . . . . . . . 3. Material . . . . . . . . . . . . . . . . . . . . Aluminum alloy tubing, corrosion-resistant cables and hardware,
32、 aluminum alloy mounting brackets, Dacron guy ropes. Weight: Mast . . . . . . . . . . . . . . . . . . . . .40 pounds. Mounting brackets, guys,14.75 pounds. anchors. Maximum wind loading . . . . . .35 mph without top guys; 50 mph with top guys. Load limitation . . . . . . . . . . . . . .20 lb masthea
33、d load over area of 2 square feet (Maximum allowable load on extended mast). Change 2 1-1 TM 11-5985-263-15 1-6. Table of Components The components of Mast AB-903/G are listed in the following table (figs. 1-2 and 1-3): 1 3 3 1 3 1 1 1 1 Quantity a Indicates Dimensions (in.)Unit weight Item HeightDe
34、pthWidth(lb) Mast assembly (FSN 5985-933-2197). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72 5940.0 Guy assemblies, lower a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 ft. . . . . 0.3 Guy assemblies, upper a
35、42 ft. . . . . 0.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Basplate a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 5/866 0.4 Stake, guy a . . . . . . . . .
36、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1/222 1.25 Adapter, antenna . . . . . 83 .3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Handle, crank a . . . . . . . . . . .
37、. . . 8 3/45 1/21 1/4 1.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bag, accessory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 12212.75 Hammer a . . . . . . . . . .
38、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25 item is contained in accessory bag. NOTEregions, a hammer has been provided to Where ground stakes are used in arcticaid in driving the stakes into the ground. 1-6.1. Items Co
39、mprising an Operable Mast AB-903/G F i g .Nomenclature, part No., and mfr codeQtyF S N The part number is followed by the applicable 5-digit Federal supply code for manufacturers (FSCM) identified in SB 708-42 and used to identify manufacturer, distributor, or 5985-933-2197 5985-089-5020 5985-089-56
40、10 5985-933-2193 5985-933-2187 5985-089-5618 5985-914-8055 5985-933-2188 Government agency, etc. Mast AB-903/G: 1054-101; 81868 (This is nonexpendable which includes): Adapter Antenna: (1 ea), 1054-401-1; 81868 Cable Counterpoise: (1 ea), 1054-403-1; 81868 Guy, Lower: (3 ea), 1054-301-1; 81868 Guy,
41、Upper: (3 ea), 1054-301-2; 81868 Plate, Base, Mast: (1 ea), 1054-303-1; 81868 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Stake Assembly, Guy: (3 ea), 425-658-1; 81868 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42、. . . 1-3 Tube Counterpoise: (3ea), 1054-402-1; 81868 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7 Tube Counterpoise: (1 ea), 1054-402-2, 81868 1-7. Description of Mast AB-903/G a. Mast AB-903/G (figs. 1-1, 1-2, and 1-3) is acable inside the winch assembly raises onl
43、y the cable-driven, lightweight, telescope mast assem-largest movable diameter mast section. Each of bly. A crank handle attached to the winchthe other sections are independently connected by assembly is used to raise or lower the mast. Thecables. The raising of this largest sec- 1-2Change 2 TM 11-5
44、985-263-15 tion exerts pressure on an independent set of cables connecting to the second largest mast section which, in turn, causes it to raise. The second largest section raises the third largest section in a similar man- ner, and the third section raises the fourth largest section. The fourth lar
45、gest raises the fifth largest (smallest diameter) sec- tion to which the appropriate antenna mount is attached. The motion is cumulative, and as a result, the section to which the an- tenna mount is connected moves most rapidly, and the largest diameter section moves most slowly. Operation will clea
46、rly show how the motion is transferred from one mast section to the other. Operation is discussed in paragraph 3-2. b. Other features of the mast are the locking pin (fig. 3-1) and the winch brake (fig. 5-2). Inside the winch assembly is a winch brake which is so designed that when the mast is being
47、 raised no pressure is exerted on the winch mechanism; however, whenever the mast tends to lower, either from the weight of the antenna and antenna mount, or when being cranked down, the winch brake applies pressure to the winch mechanism, preventing the mast from being lowered too rapidly and keeps
48、 it at any stopped height. The locking pin is used to lock the mast in any position; that is, fully erected, fully lowered, or any position in between. c. When the mast is being transported or stored, a toggle-lock mechanism with a spring and a stop (safety) pin (fig. 1-4) are used to secure all mas
49、t sections to prevent unnecessary movement between the mast sections. The mast may be locked only when it is fully retracted. d. The mast may be used in ground in- stallation or in vehicular operation. Ground installation and operation will be discussed in this manual. A typical vehicular installa- tion in a M151A1 vehicle is shown in fig- ure 1-2. For detailed vehicular installation, refer to pertinent manual for that vehicle. 1-8. Description of Minor Components Included with the mast are the following minor components: a. A canvas accessory ba
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