1、MIL-T-63222 (1) 67 7799906 OLIO4672 3 = i = - _ - 8 -x e- dp-qo MIL-T-63222( AR) 7- NOVEMVER 1980 AMENDMENT 1 MILITARY SPECIFICATION Trainer, Field Artillery, 14.5mm: M31 This amendment forms a part of Military Specffication MIL-T-63222(AR) , dated 20 July 1977. L Page 2 2.1, Drawings - Add: 3.8: Ch
2、ange number to IF1 1 578634 Cannon Assembly, 14.5nim - General Page 3 “3.9“ and add new paragraph: “3.8 Interchangeabili by. Assemblies and parts shall be subjected tests of 4.5.3.3, 4.5.3.4 and 4.5.3.5“. Drawing“ ,o the Page 7 Add: “4.5.3.3 Cannon Assembly. The contractor shall subject a sample Gf
3、ten cannon assemblies selected by the Government representative from each inspection lot for interchangeabil i ty testing using the Interchangeabil i ty Pattern of Table I. The ten cannon assemblies shall be tested for and shall comply with the requirements for firing pin protrusion, headspace and s
4、afety operation before and after interchangeability of parts, using the test methods specified in 4.5.2.6, 4.5.2.7 and 4.5.2.8 respectively. In addition, the rifles shall be tested for functioning requirements after interchange of parts using the test methods specified in 4.5.3. No malfunctions shal
5、l be allowed in the function firing test and failure of not more than two cannon assemblies shall be allowed in the targeting and accuracy firing test. However, cannon assemblies failing in the targeting and accuracy test within the limitations above, shall be corrected by the contractor to meet the
6、 targeting and accuracy requirements (see 4.5.3.2) before they are returned .to the represented lot for final acceptance. Failure of the interchangeability test hhall cause retest or rejection of the represented lot. At the discretion of the Government representative, an interchangeabi 1 ity retest
7、may be al lowed without reconditioning the lot of cannon assemblies. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-63222 (AR) ANENDMENT 1 Trigger Safety Guide Bolt .- PART NANE Lock Knob Bus hi ng P1 unger Barrel Assembly Eo1 t Extractor Pin,
8、 Firing Spring, Firfng Pin Spring Guide Lever, Bolt Spacer Detent Bolt Screw TABLE I INTERCHANGEABILITY PATTERN CANNON ASSEMBLY (1 1578634) . FOR PART RELATIONSHIP OF PARTS NUMBER FOR REASSEMBLY 11 57861 7 * 56789101234 11 578623 6789101 2345 . 11578624 78910123456 11 578603 89101234567 11 578607 91
9、012345678 11 578604 10123456789 11 578625 12345678910 11 578000 10123456789 11 578608 91012345678 1 1578606 9101234567 1 157861 3 78910123456 11 57861 O 67891012345 1 1578601 56789101234 11 578598 45678910123 11 57861 2 34567891012 4.5.3.3.1 Interchange of parts. Cannon shall be tested for interchan
10、ge of parts by disassembling and then reassembling parts using the parts and prearranged system specified in Table I. Interchange of parts shall be accomplished by dividing the parts of each cannon into 10 groups of non- mating parts and distributing the groups into 10 different trays until each tra
11、y contains parts for a complete cannon. Groups of parts from the first cannon shall be taken in order and placed in trays 1 through 10; groups of parts from the second cannon shall be taken in order and placed in trays 2 through 10 to 1; groups of parts from the third cannon shall be taken in order
12、and placed in trays 3 through 10 to 2; etc. Comercial parts, with the exception of those listed on the interchange list, such as screws, spring pins, etc., shall be placed in the same tray as their mating or associate part. Any part rendered unserviceable by disassembly shall be replaced without pen
13、alty to interchangeability test. The cannon shall be reassembled using only parts which are in the same tray. .I 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-T-63222 (AR) AMENDMENT 1. . 4.5.3.3.1.1 Parts shall be capable of assembly as show
14、n without fitting or selective assembly. 4.5.3.3.12 If a part fails to fit, the part and mating parts shall be inspected for conformance to requirements and determination of cause. The parts shall then be screened 100%. 4.5.3.3.1.3 After assembly, check headspace, firing pin protrusion, safety and h
15、and function for smoothness of .operation and freedom from binding. 4,5.3.3,1.4 The interchan.geabi1ity test may be waived at the discretion of the Procuri ng Contracti rig Officer after successful demonstration of conforniance to the i nterchangeabi 1 i ty requirement. 4,5.3.4 Interchangeability fo
16、r the Carriage/Tripod Assemiil ies. Individual tripod assemblies shall be tested for interchangeability of parts by disasserbling and then reassenbling parts using the parts and pre-arranged system as follows. Interchangeability of parts shall be accomplished by dividing the parts of each assembly i
17、nto 8 groups of nonmating parts as shown in Table II and dis- tributing the groups onto 8 different pallets until each pallet contains parts for a coniplete assenbly. Groups of parts from the first assembly shall Be taken in order and plac4 on pallets 1 through 8; groups of parts from the second ass
18、embly shall be iaken in order and placed on Dallets 2 through 8 to 1; groups of parts from the third assembly shall he takm in order and placed on pallets 3 through 8 to 2; etc. Commercial parts such as screws, spring pins, etc., shall be placed on the same pallet as their mating or associated part.
19、 Any commercial part rendered unserviceable by disassembly shall be replaced without penalty to the interchangeability test, The assemblies shall be reassembled using only those parts that are on the same pallet. TALBE II GROUPS OF NON-MATING PARTS GROUP I Cannon, gear assy Screw, nut locking Sicket
20、 GROUP III Shaft (elevating bracket) Leg, lower (i) Screw GROUP V P1 unger assy Leg, lower rear Retainer GROUP II 11 578675 tbunt, base fixed assy 11578756 11 578682 Base, sub-assy 1 157871 8 11 578699 Screw, 1 oc ki ng 11 578705 GROUP IV 11 578655 Elevating bracket assy 11578754 11 578685 Leg, lowe
21、r (2) 11 578685 11 578698 Screw 11 576698 GROUP VI 11 578757 Upper carriage assy 11 578748 11 578690 Sleeve assy (1) 11 578692 11 578701 Spring 11 578703 U Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-63222( AR) MIENDMENT 1 GROUP VI1 P1 unge
22、r (1 ) Sleeve assy (2) Hand1 el ock 11 578649 11 578692 .11578702 GROUP VI11 P1 unger (2) Sleeve assy (3) Lock, telescope 11 578649 11 578692 1 1578697 4.5.3.5 Interchangeability for the trainer assemblies. Interchangeability for trainer assemblies shown in Table III shall be tested by disassembling
23、 and then reassembling assetxblies using the following- system: . :,. 1. Take four (4) trainers consisting of the Cannon gear Assembly - B11578675, Carriage Assembly-F11578686, Tripod Assembly-Fll578687 and Socket Assembly- C115787G. 2. Disassemble the trainers so that the individual assemblies are
24、dispersed to comply with the interchangeability pattern specified in Table III, 3. The trainers shall be reassembled usins the assemblies in each group, TABLE III INTERCHANGEABILITY PATTERN FOR TRAINER, ARTILLERY, 14.5NM: M31 Drawi Rg Assemblies Number Relationship of Assembl ies for Reassembly Cann
25、on, Gear 61 1578675 1234 Carriage Fll578686 4123 Tri pod F11578687 3412 Socket C11578700 2341 Custodian; Preparing activity: Arnw-AR Amy-AR f7U.S. GOVERNMENT PRINTING OFFICE: 1981-703-023/589 Project No. 6920-A094 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
