1、MIL-F-457bb 10 7777706 0307678 O MIL-F-4 5966 25 October i974 SUPERSEDING (See Section 6) * MILITARY SPECIFICATION FEEDER, AUTOMATIC GUN: 89 and 891 This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers one type of
2、 gun-driven feed mechanism for amnition belted with Ml4 series links for use on the 20m, Ml97 and M197E1 automatic gun. strips the ammunition from the links, ejects the empty links, and feeds the delinked ammunition into the gun. operated declutching feature for engaging or disengaging the drive. Th
3、e feeder pulls in the link-belted amnition, The feeder includes an electrically 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of .the speci- fication to the extent specified herein: THIS DOCUMENT CONTA
4、, shall.be submitted for inspection in accordance with the contract - (see - - 6.2), The first article shall be representativeof the production processes to be used during quanttty prqduction. The first article shall be .subjected to the quality conformance inspection specified herein and such other
5、 inspections as necessary to determine that all the requirements of the contract have been met. 4.5 Quality conformance inspection. k5.1 Inspection lat. The formation, size and presentation of inspection lots of feeders and parts shall. be in accordance with MLlsTD-lO5 and Mn;-3855. that have met dl
6、 inspection requirements specified herein. test lot size shaJJ. be as specified in 4.5.3.3. Feeders sha.1 be assembled Pam lots of component parts Endurance 4.5.2 Examination. 4.5.2.1 Eomponent pa.rt s and connurrent repair S. ExmLnation of component parts and concurrent repair pasts shall be perfor
7、med in accordance with the criteria specified in the contract (6,2). contractors examination of these parts shall be accomplished prior to their assembly into the end item or submission for acceptance as repair ms The 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
8、ense from IHS-,-,-MIL-F-45966 LO m 9999906 0309684 b m MIL-F-45966 4.5.2.2 Feeders. Visually and manually examine each feeder to determine conformance with the applicale requirements. Each step in the examination shall include a visual examination for proper cleaning and presence of the specified pr
9、otective coating and to determine the general quality, completeness of manufacture, assembly, clarity and legibility of markings and workmanship. be applied at the earliest practical point in manufacture at which it is feasible to inspect for acceptance without risk of change in the character- istic
10、 by subsequent operations. Reinspections of these characteristics on the completed product is not required provided assurance exists that the characteristic has not been changed, degraded or damaged by subsequent manufacturing, assembly or handling and that adequate inspection records are maintained
11、. rejected. The examination provisions shall Feeders failing to meet the requirements shall be 4.5.2.2.1 Parts and assemblies. Parts and assemblies shall be visually and manually examined to determine compliance with the niaterials, construction and design requirements of 3.2 and the applicable requ
12、ire- ments of 3.2.1 through 3.2.14. requirements shall be rejected, solenoid operation to determine compliance with 3.2.14.1. Parts and assemblies failing to meet the 4.5.2.2.2 Solenoid operation. Feeders shall be examined for 4.5.2;2.3 Electrical circuit, Examine feeders for continuity to determine
13、 compliance with 3.2.14.2. 4.5.2.2.4 Solenoid electrical characteristics Feeders shall be examined for solenoid electrical characteristics to determine compliance with 3.2.14.3. 4.5.2.2.5 Timing. Feeders shall be examined to determine com- pliance with 3.2.15. 4.5.2.2.6 Torque. Feeders shall be exam
14、ined for torque to determine compliance with m. shaft with a torque wrench. not initial starting torque. Torque shall be measured by rotating feeder Observe average peak dynamic torque reading, 4.5.2.2.7 Visually examine all marking required by the final assembly drawing to assure they are clear and
15、 eligible. 4.5.2.2.8 Visually examine the identification plate for compliance with the applicable drawing, for secure assembly (see 3.8), serialization and to assure that all pertinent data has been applied. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
16、IHS-,-,-MIL-F-45966 10 = 7977906 0309685 8 W MILI-I?-45966 4.5.3 Testing. 4.5.3.1 Failure data. Unless otherwise specified herein, all-tests shall be conducted on a complete feeder. test requirements specified herein shall be cause for rejection of the feeder or the inspection lot of feeders. be def
17、erred and the contractor shall accomplish as applicable the follow- ing actions: Failure of feeders to meet the Acceptance of feeders shall a. Conduct a failure analysis study performing a dimensional, physical and visual examination of the components which are suspected to be the cause of failure o
18、r malfunction. b. Evaluate and correct the applicable production processes and procedures to prevent recurrence of the same defect(s) in future production. c. Examine feeders, partially assembled feeders and components (including components and subassemblies at in-process or final assembly) to insur
19、e that material containing the same defect is purged from the inventory and not presented to the Government for acceptance. corrective actions taken to the Government for review and approval prior to submitting a reconditioned lot or reconditioned feeders for retest. d. Submit the results of the fai
20、lure analysis and the 4.5.3.2 Function testing. Each feeder shall be tested for function- ing (see 3.3.13 by using the test method specified in 4.6.1. the feeder to meet the requirements shall be cause for rejection. Failure of 4.5.3.3 Endurance testing. 4.5.3.3.1 Lot size. sist of the initial month
21、s production; subsequent endurance test lot size shall consist of 100 feeders. The initial endurance test lot size shall con- 4.5.3.3.2 Procedure. One feeder shall be selected from each endurance test lot and tested for endurance (see 3i3.2) using the test method speci- fied in 4.6.2. for rejection
22、of the represented lot, Failure of the feeder to meet the requirements shall be cause 4.5.3.4 Interchangeability testing. 4.5.3.4.1 In plant. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.3,4.1,2 Feeders. A sqle of three feeders selected from
23、 each months produckion shall be tested foo interchangeability (see 3.4) using the test methcd specified in 4.6.3.1.1. ability testing shaU have been found satisfactory in a3-1 other examina- tions and tests. The three feeders shall be inspected for and shaJ. comply with the requry List DD Form 1660
24、. 6.6 Supersession data. This specification includes the requirements of U.S. Army Weapons Command Purchase Description USAWECOM PD-45, dated 13 July 1972. Cus tod fan : Army - wc Navy - OS * U. S. GOVERNMENT PRINTING OFFICE: 1974 -603-1 13/3379 14 Preparing activity: Army - WC Project number: iOOj-A474 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
