1、MIL-C-6231 OA( AT) 21 SEPTEMBER 1982 SUPERSEDING MIL-C-6231 O( AT) 24 April 1981 MILITARY SPECIFICATION CARRIERS, ARMORED, FULL-TRACKED: CHASSIS, WEAPON, FULL-TRACKED: M741A1, AND M901 MI 13A2, M106A2, M125A2, AND M577A2, AND 1. SCOPE 1.1 Scope. This specification covers six types of armored, full-t
2、racked, diesel powered vehicles designed for cross country and amphibious operations. 1 .2 Classification (see 6.2). Model Army drawing Vehicle type Mm 8750026 Carrier, 107MM Mortar Nl13A2 8750024 Carrier, Personnel MI 25A2 8750027 Carrier, 81MM Mortar M577A2 87500 25 Carrier, Command Post M74 1 Al
3、8750030 Chassis, Weapon, Full-tracked M90 1 12253500 Chassis, Weapon, Full-tracked 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein
4、. SPECIFICATIONS FEDERAL VV-F-800 - Fuel Oil, Diesel. MILITARY DAPD-285 - Generator Set, Gasoline Engine Driven, 4.2 Kilowatt, 28 Volt, Direct Current. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addresse
5、d to: US Army Tank-Automotive Command, ATTN: DRSTA-GSS, Warren, MI 48090, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this doeument, or by letter. FSC 2320 Licensed by Information Handling ServicesProvided by IHSNot for ResaleNo re
6、production or networking permitted without license from IHS-,-,-MIL-P-51 4 MIL-C-45360 MIL-C-46746 MIL- C-6 2074 MIL-T-62099 MIL-0621 40 MIL-C-62291 MIL-H-62315 STANDARDS MILITARY MIL-STD-105 MIL-STD-130 MIL-STD-4 6 I MIL-STD-462 MIL-STD-642 MIL-STD-I 275 MIL-STD-1474 DRAWINGS ARMY 8750026 8750024 8
7、750025 8750027 8750030 MIL-C-6231 OA( AT) - Plates, Identification, Instruction and Marking, Blank. - Carrier, Personnel, Full Tracked, Armored MI13 and MI 13A1, and Mortars, Self Propelled, 107MM, MI06 and M106A1, and 81MM, M125A1, Processing for Storage and Shipment of. - Carrier, Command Post, Li
8、ght Tracked, M577 and M577A1, Processing for Storage and Shipment of. - Chassis, weapon, Full-tracked M741, Processing for Storage and Shipment of - Transmission, Hydraulic, Modified Automatic Tx-100-1 - Engine Diesel: 6 Cylinder, V-type, 210 HP. - Chassis, Weapon, Full-tracked, F12253500, Processin
9、g for Storage and Shipment of. - Heater Assembly, Combustion, Vehicular Compartment, 60,000 BTU/hr. - Sampling Procedures and Tables for Inspection - Identification Marking of US Military Property. - Electromagnetic mission and Susceptibility by Attributes. Requirements for the Control of Electromag
10、netic Interference. - Electromagnetic Interference Characteristics, Measurement of. - Identification Marking of Combat and Tactical Transport Vehicles. - Electrical Circuit, 28 Volt DC Transient Characteristics for Military Vehicles. - Noise Limits for Army Materiel. - Carrier, 107 Millimeter Mortar
11、, MI 06A2. - Carrier, Personnel, Full Tracked, Armored, - Carrier, Command Post, Full Tracked, M577A2. - Carrier, 81 Millimeter Mortar, Ml25A2. - Chassis, Weapon, Full-tracked, M741Al. PI1 1 3A2 2 ;-=+.a, . . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from I
12、HS-,-,-. MIL-C-62311OA 23 9797406 02024119 O MILC-6231 OA( AT) 10942803 - Lubrication Chart, Production, Fuel and Coolant. 12253500 - Chassis, Weapon, Full-tracked (Mg01 ). (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procuremen
13、t functions should be obtained from the procuring activity, or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 First article (preproduction). When specified (see 6.2), the con- tractor shall furnish sample units for first article inspection and approval (see 4.3 and 6.3). 3.2 Initial pr
14、oduction vehicles. Vehicles manufactured on initiation of quantity production shall be inspected, and shall pass, initial production in- spection (see 4.4). vehicles to be furnished under this specification, and shall include all cur- rent modifications. No modification shall be applied to subsequen
15、t vehicles without approval of the Government. Initial production vehicles shall he representative of 3.2.1 Reliability. Reliability shall be not less than 750 Mean Miles Between Failure (MMBF) during the first 5,000 miles, when operated in accord- ance with the operational profile (see 3.2.4). init
16、ion in the Mll3A2 family 50 mile mission failure scoring criteria shall be used (see 6.11). For calculating MMBF, the def- 3.2.2 Durability. The vehicle with rated payload shall have a 50 percent probability of completing the first 5,000 test miles without replacement, re- build, or major overhaul o
17、f the engine, transmission, transfer gear unit, differential steer unit, or final drives, and without repair or rebuild of the hull, when operated in accordance with the operational profile (see 3.2.4). 3.2.3 Maintainability. Total maintenance, excluding driver/crew checks and services, shall not ex
18、ceed 175 manhours during 5,000 miles of operation in accordance with the operational profile (see 3.2.4). Haintenance Ratio (MI?) of 0.35 at 10 operational miles, equivalent to one operational hour. The scheduled maintenance interval shall be three months or 750 miles, whichever comes firs t. This e
19、quates to a 3.2.4 Operational profile. Test mileage shall be apportioned as follows: a. 20 percent hard-surfaced roads b. 40 percent secondary roads c. 40 percent cross country NOTE: During operation on hard-surfaced roads and cross country, the vehicle shall be capable of towing a vehicle of equal
20、weight for 20 miles in each mode. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-62310A 23 3777706 0202420 7 W MIL-C-6231 OA( AT) 3.3 Xaterials. Materials shall be as specified herein and in referenced drawings, specifications, and standards
21、. Materials shall be free of defects and imperfections that might affect the serviceability and function of the finished product ( see 6.1 O) 3.3.1 Ozone resistance. When rubber components are required to be ozone resistant, the degree of resistance shall be as specified in applicable speci- ficatio
22、ns or drawings. 3.3.2 Qualified products. The contractor shall be responsible for using parts and assemblies from Qualified Products Lists ( QPLs) whenever available. Contractors inspection records shall specifically list all QPL items by num- ber and date of the QPL, name of.contractor and part or
23、drawing number(s). When parts and assemblies are approved as qualified products, but not yet listed on the QPL, the contractor shall list the products by number and date of the approved document and name of contractor. 3.4 Construction. The vehicle shall be constructed in accordance with the followi
24、ng drawings, as applicable, and applicable specifications and standards (see 2.1). components used shall be identical in make, material and quality. Riveting, welding practices and quality shall be the same on each vehicle. vehicles shall meet all requirements specified herein, and be of a quality t
25、hat assures a vehicle free of defects that would compromise, limit, or reduce its performance. If more than one unit of a particular component is used, the Completed Model Drawing number MEZE 8750026 MI 13A2 8750024 MI 2582 87 5002 7 M577A2 8750025 M74 1 Al 8750030 wgo1 12253500 3.4.1 Bearing seals.
26、 When fording, operating amphibiously, or in mud, sand or snow, seals shall prevent the entrance of foreign matter into the bearings, which are exposed to contamination during these operations. seals shall restrict the leaking of lubricants from bearings. Bearing 3.4.2 Special equipment. 3.4.2.1 Win
27、terization equipment. Provisions shall be made for installation of winterization equipment, including personnel heaters. When installed (see 6.2), winterization equipment shall assure operation under arctic conditions in ambient temperatures of minus 25F to minus 60F. 4 Provided by IHSNot for Resale
28、No reproduction or networking permitted without license from IHS-,-,- MIL-C-623LOA 23 7777906 0202LI23 7 MIL-C-6231 OA( AT) 3.4.3 Doors and covers. All doors and covers furnished shall conform to applicable drawings. When doors and covers are installed in accordance with the drawings, they shall fit
29、 and be water, dust and snow resistant and func- t ion without interference or misalignment. 3.4.3.1 Hatches and vision devices. All hatches and vision devices fur- nished shall conform to applicable drawings. locks for open position. Vision device receptacles incorporated in the vehi- cle shall acc
30、ept Government supplied vision devices without binding or inter- ference, and provide adequate support during all vehicle operating conditions. All closed hatches and installed vision devices shall restrict entrance of water to a maximum of 10 drops per minute, collectively, into the vehicle. 3.4.3.
31、2 Doors (M106A2 and M12542). Hatches shall have positive The roof access door center section on M106A2 and M125A2 vehicles shall open back on right door section, and lock se- curely and open in combination with the right door section on top deck and lock securely. securely. When open during vehicle
32、operation, access doors shall remain securely locked in open position. 3.4.3.3 Covered extension lightproofness (M577A2). When installed and attached to the M577A2 vehicle in accordance with applicable drawings, the lighted interior of the covered extension shall be invisible at a distance of 125 ya
33、rds under natural pitch darkness conditions. junctions shall be lightproof when operating under field conditions. The left door section shall open back on top deck, and lock All 3.4.3.3.1 Covered extension wind resistance. The covered extension, when assembled over the frame assembly and attached to
34、 vehicle, shall withstand a steady wind pressure of 40 miles per hour. 3.4.3.3.2 Covered extension, stowed. All covered extension items stowed (combat loaded) on the vehicle in the spaces provided shall fit properly and not interfere with the operation of vehicle or components. 3.4.4 Engine. The eng
35、ine shall conform to MIL-E-62140 and shall operate throughout all speed ranges without evidence of cooling system, lubricant, or fuel leakage. 3.4.4.1 Ehgine air induction system. The air induction system, as installed, shall prevent entrance of foreign matter as specified on applicable drawings. 3.
36、4.5 Exhaust systems. The engine exhaust system, as installed and the personnel heater exhaust system when installed, shall not permit concntration of toxic fumes in the driver and crew compartments to exceed 50 ppm for carbon monoxide (CO) or 5 ppm for oxides of nitrogen (NOx) . 5 . i Provided by IH
37、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-6231 OA( AT) 3.4.6 Fuel system, grades and slopes. During vehicle operation, the fuel system shall maintain a continuous supply of fuel to the engine when ascending and descending 60 percent grades in forward a
38、nd reverse gear, and when vehicle is being operated on 30 percent side slopes with either side of vehicle up- slope. 3.4.6.1 Fuel cells. Provision shall be made to assure the internal clean- liness of the fuel cell(s) prior to initial fueling of vehicle. cell(s) shall be capable of receiving 50 gall
39、ons of fuel per minute. The fuel 3.4.6.2 Fuel and hydraulic lines. Fuel and hydraulic lines and connections shall be internally clean prior to initial fueling and servicing of vehicle. All fuel and hydraulic lines, connections, and cells shall be leak-free. 3.4.6.3 Rack linkage. With rack linkage in
40、stalled in accordance with applicable drawings, and with the accelerator pushed against the stop, the rack shall be at full open position. 3,4.7 Transmission, transfer gear case and controlled differential. The transmission shall conform to MIL-T-62099. When installed in vehicle, the transmission tr
41、ansfer gear case and controlled differential shall operate throughout all gear ranges without evidence of leakage. 3.4.8 Ammunition racks (M106A2 and M125A2). Ammunition racks, when in- stalled, shall support and retain the ammunition, or simulated ammunition of the same size and weight, within the
42、racks during all conditions of vehicle operation. 3.4.9 Electrical system. 3.4.9.1 Generating system voltage (alternator). After no less than 20 minutes of operation with headlights on, regulator control shall be observed. Alternator shall be operated at 4000 + 100 rpm with an output of 50 + 5 amper
43、es, and the voltage regulator rheostat adjusted to provide 27.3-+ 0.3 volts at the vehicle batteries. Voltage at the vehicle batteries shall be 28.0 - + 0.5 volts when the load is removed. 3.4.9.1 .i Auxiliary generator (M577A2). The auxiliary generator shall conform to DAPD-285, and shall deliver 1
44、50 amperes continuously for operation - of all command post equipment. 3.4.9.2 Lights. Internal and external lights specified on applicable drawings shall operate, and all electrical contacts and connections shall maintain positive contact, under all vehicle operating conditions. 6 Provided by IHSNo
45、t for ResaleNo reproduction or networking permitted without license from IHS-,-,-UIL-C-623LOA 23 7777906 0202LI23 2 MIEC-6231 OA( AT) 3.4.9.3 Heater (M577A2 and M901). The heater shall conform to NIL-H-62315 and shall start and shall operate satisfactorily with vehicle electrical system, and diesel
46、fuel conforming to W-F-800. 3.4.9.4 Communication and electrical circuits. Communication and electrical circuits shall maintain continuity from end to end, without shorts from pin to pin, or from pin to connector shell. 3.4.9.5 SysCm voltage characteristics. Electrical system voltage char- acteristi
47、cs shall fall within the limits for transient and steady state vol- tage requirements specified in MIL-STD-1275. 3.4.9.6 Electromagnetic interference suppression. The vehicle, when operating, shall meet the requirements for EMI/EMC suppression in accordance with emission requirements RE05 and CM7 of
48、 MIL-STD-461A, Notice 4. 3.4.10 Controls. All electrical, mechanical and hydraulic controls shall operate without malfunction throughout all ranges of operation under all ve- hicle operating conditions. 3.4.11 Adjustment mechanisms. All adjustment mechanisms shall function properly and maintain adju
49、stment within required settings during all vehicle - operating conditions. 3.4.12 Trim vane. The trim vane shall retain its extended position when vehicle is operated amphibiously. 3.4.13 Ramp system. The ramp hydraulic system shall be internally clean, and have all connections tight, prior to initial filling of the system. The system shall be free of leakage before and after operation. Ramp raising time, from the fully lowered position to closed position, sha
