1、MIL-F-4557A W 77777Ob 1973022 298 W Beneficial comments (recommendations. additions, deletions) and any pertinent data which iiy be of USO in improving this document should be addressed to: Comm8nder. U.S. Army ARDEC, ATTN: SMCAR-BAC-S, Picatinny ArSenal, New Jersey 07806-5000 by using the Standardi
2、zation Document Improvement Proposal (DD Fori 1426) appearing at the end of this document or by letter. . MIL-F-45598A 20 January 1994 SUPERSEDING MIL-F-45598 30 July 71 MILITARY SPECIFICATION FEEDER, DELINKING, AIRCRAFT MACHINE GUN: MAU-56/A This Specification is approved for use by all Departments
3、 and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers one type of machine gun driven feed mechanism for ammunition belted with M13 links for use on the 7.62mm, M134 (GAU-2B/A), machine gun. The feeder pulls the link-belted ammunition, strips the ammunition from th
4、e links, ejects the empty links, and feeds the delinked ammunition into the machine gun. The feeder includes an electrically operated mechanism for clearing ammunition from the feeder sprocket prior to the transfer of ammunition to the machine gun when the machine gun trigger is released. 2. APPLICA
5、BLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent speci.fied herein. Unless otherwise specified, the issue of these documents shall be those listed in the issue of t
6、he Department of Defense Index of Specifications and Standards (DoDISS) and supplement there to, cited in the solicitation (See 6.2). AMSC NIA FSC 1005 DISTRIBUTION STRI“IMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permit
7、ted without license from IHS-,-,-HIL-F-45598A W 9999906 1973023 124 MIL-F-45598A SPECIFICATIONS MILITARY MIL-Q-9858 - MIL-W-13855 - MIL-P-14232 - MIL-1-45208 - MIL-1-45607 - MIL-L-46150 - MIL-W-63150 - MIL-A-70625 - STANDARDS MILITARY MIL-STD-109 - MIL-STD-202 - Quality Program Requirements Weapons,
8、 Small Arms and Aircraft Armament Subsystems, General Specification for Parts, Equipment and Tools for Army Material, Packaging and Packing of Inspection System Requirements Inspection Equipment, Acquisition, Maintenance and Disposition of Lubricant, Semi-Fluid: Low Friction (Aut omat ic Weapons ) W
9、eapons and Support Material, Standard Quality Assurance Provisions for Automated Acceptance Inspection Equipment Design, Testing and Approval, of Quality Assurance Terms and Definitions Test Methods for Electronics and Electrical Component Parts MIL-STD-45662-Calibration Syitems Requirements. (Unles
10、s otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from DODSSP-Customer Service, Standardization Documents Order Desk, 700 Robbins Avenue, Bldg. 4D, Philadelphia, PA 19111-5094). publications. The following other Government documents, drawing
11、s, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. 2.1.2 Other Government documents, drawincrs and DRAWINGS (see 6.6) U.S. ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER (ARDC) 11701120 - Feeder,
12、 Delinking, Aircraft Machine gun, MAU-56/A (Product drawings referenced in this specification form a part of 11701120) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-45598A 99999Ob 1973024 Ob0 = MIL-F-45598A PUBLICATIONS U.S Army Weapons Com
13、mand 11701120 - Packaging Data Sheet for Feeder, Delinking, IEL 11701120 - Index of Inspection Equipment Lists Aircraft Machine gun, MAU-56/A (Acceptance inspection equipment drawings referenced in this specification form a part of IEL 11701120) (Copies of specifications, standards, handbooks and pu
14、blications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Order of Precedence. In the event of a conflict between the text of this document and the references cited herein, t
15、he text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. (See contract provisions for additional precedence criteria). 3. REQUIREMENTS 3.1 Materials. Materials shall be in accordance with t
16、he applicable drawings and specifications. 3.2 Components and assemblies. The components and assemblies shall comply with all requirements specified on Drawing 11701120, all associated drawings, and with all requirements specified in applicable specifications and drawings. 3.3 First Article. When sp
17、ecified in the contract or purchase order (see 6.21, a sample shall be subjected to first article inspection in accordance with the technical provisions herein. Unless otherwise specified, the first article shall include the pilot pack (see 5.1). 3.4 Desian. Feeders and parts shall conform to the de
18、sign specified herein, on Drawing 11701120 and drawings applicable thereto, and shall be in accordance with the applicable design provisions of MIL-W-13855. 3.4.1 Cam auide. The cam guide shall be securely retained in the feeder housing by the screw so that there shall be no relative movement. The c
19、am guide shall guide the cartridges that have been stripped from the links by the push rods to the feeder sprocket when the feeder is operated. I. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-45578A 9999906 I1973025 TT7 W MIL-F-45598A 3.4.
20、2 Clearins suide and solenoid crroup. 3.4.2.1 Clearinu uuide. The clearing guide shall rotate through its full range of travel between the two spring pins on the feeder housing, without binding. 3.4.2.2 Clearincr auide SD rinq. The clearing guide spring shall be securely retained on the feeder housi
21、ng by the screws and shall retain the clearing guide in position in the slots of the feeder housing. 3.4.2.3 Link and pivot arm. The link and pivot arm shall be attached to the solenoid plunger, feeder housing, and clearing guide by the spring pins and when the solenoid plunger is actuated, the link
22、 and pivot arm shall rotate on the spring pins in the clearing guide and feeder housing without binding. 3.4.2.4 Solenoid. The solenoid shall be securely attached to the feeder housing by the screws so that there shall be no relative movement. The solenoid plunger shall move through its full range o
23、f travel without binding and shall be returned to and held in the extended position by spring action. Depression of the solenoid plunger shall cause rotational movement of the clearing guide, by action of the link and pivot arm, moving the clearing guide into the feed position. Releasing the solenoi
24、d plunger shall allow the clearing guide to rotate into the clearing position. 3.4.3 Entrance cruide, link uuide and nose uuide. The entrance guide, link guide, and nose guide shall be securely attached to the feeder housing by the screws. There shall be no relative movement of these parts. 3.4.4 Fe
25、eder cam housinq and insert. The feeder cam housing shall be securely attached to the feeder housing by the screws and the insert shall be securely attached to the feeder cam housing by the screws. There shall be no relative movement of these parts. 3.4.5 Feeder suide. The feeder guide shall be secu
26、rely retained on the feeder housing by the screws so that there shall be no relative movement. 3.4.6 Feeder shaft crroup. The feeder gear, stripper sleeve and pin assembly, push rod guide assembly, and feeder sprocket shall be securely retained on the feeder shaft by the spring pins. The spring pin
27、retaining the feeder gear to the feeder 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-45598A D b L7302b 933 MIL-F-45598A shaft shall be retained in the feeder gear by the staked pin spring as specified on the applicable drawing There shall
28、be no relative movement of these parts, shall rotate in the bearings in the feeder cam housing and the forward guide plate without binding. 3.4.7 Forward cruide and bea rina assemb IV plate. The forward guide and bearing assembly plate shall be securely retained on the feeder housing by the screws s
29、o that there shall be no relative movement. The flanged bearing shall be a press fit in the forward guide plate so that there shall be no relative movement of the bearing in the plate. 3.4.8 Identification Plate. The identification plate shall be securely attached to the feeder housing by the drive
30、screws so that there shall be no relative movement. 3.4.9 Push rod assemblies a nd push rod rollers. The push rod assemblies shall move through their full range of travel in the feeder cam housing, push rod guide assembly, and feeder gear without binding when the feeder gear and feeder shaft are rot
31、ated. The push rod pins shall be a press fit in the push rods and the push rod rollers shall rotate on the pins without binding. The push rod assemblies shall strip cartridges from the links and position the stripped cartridges into the stripper sleeve and pin assembly and the cam guide when the fee
32、der is operated. 3.4.10 Round direction Plate. The round direction plate shall be securely attached to the feeder housing by adhesive stated on Dwg 11701125 so that there shall be no relative movement. 3.4.11 Timins pin and button. The button shall be securely retained on the timing pin by the sprin
33、g pin. The timing pin shall move through its full range of travel without binding and shall be returned to and held in the extended position by action of the spring. 3.4.12 Lubrication. The push rods and the gear teeth shall be coated with lubricating oil conforming to MIL-L-46150. All other surface
34、s shall be coated with preservative oil specified on the applicable drawings. The ball bearing shall be protected against contamination by cleaning solvent during cleaning operations. 3.4.13 Timinq. With the timing pin engaged in each of the seven timing positions, the dimensional relationship of th
35、e feeder sprocket teeth to the feeder gear shall be within the limits specified on the applicable drawings. e 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-9999906 1973027 87T W MIL-F-45598A 3.4.14 Torque. The torque required to manually start ro
36、tation of the feeder shaft without ammunition shall be determined for each feeder. 3.4.15 Solenoid dielectric withstandina voltaae. Solenoid shall withstand 590 to 600 volts root mean square at a frequency of 50 to 60 Hertz (Hz) for one second without disruptive discharge or deterioration. Testing s
37、hall be as specified in 4.4.3.1, 4.5.1 and Method 301 of MIL-STD-202. 3.4.16 Solenoid operation. The solenoid shall actuate the clearing guide and position the clearing guide into the feed position when 25 volts direct current (vdc) is applied to the solenoid and when the solenoid is de-energized it
38、 shall allow the clearing guide to return to the clearing position under spring action of the solenoid plunger. Testing shall be as specified in 4.4.3.1 and 4.5.2. 3.4.17 Functioninq. The feeder shall operate without stoppage or breakage of parts attributable to the feeder. Testing shall be as speci
39、fied in 4.4.3.1 and 4.5.3. The feeder shall completely strip all rounds from the links, shall feed the stripped rounds into the machine gun or approved test equipment simulating the machine gun, shall eject the empty links from the feeder, and perform its cleaning function. Links may remain in the e
40、xit chute after firing. 3.4.18 Interchanaeabilitv. Unless otherwise specified on the drawings, all parts shall be interchangeable. (In normal assembly operations there shall be no objections interposed to preferential assembly of parts provided that all parts are dimensionally acceptable.) Feeders a
41、nd repair parts shall be capable of meeting the interchangeability tests specified in 4.4.3.2 and 4.5.4. 3.4.19 Endurance. Feeders shall be capable of withstanding an endurance test of 30,000 rounds with at least 200 clearing operations without functioning failures (see 3.4.17), or no more than one
42、clearing malfunction attributable to the feeder and the replacement of shear pins as a result of a malfunction. Testing shall be in accordance with 4.4.3.3 and 4.5.5. 3.5 Markinq. Each feeder shall be marked in accordance with the applicable drawings and MIL-W-13855. 3.6 Workmanship. Workmanship sha
43、ll be in accordance with the workmanship requirements of MIL-W-13855. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-4557A 9999906 L973028 706 MIL-F-45598A 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibilitv for inspect ion. Unless specified
44、in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the p
45、erformance of inspection requirements specified herein unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requiremen
46、ts 4.1.1 Responsibilitv for compliance. All items shall meet all requirements of Sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall
47、 not relieve the contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to require
48、ments, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.1.2 General provisions. Unless otherwise specified herein, the provisions of MIL-W-13855 apply and form a part of this specifi
49、cation. Reference shall be made to MIL-STD-109 to define quality assurance terms used herein. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 First article insPect ion. 4.3.1 Submission. The contractor shall submit a first article sample as designated by the Contracting Officer for evaluation in accordance wit
