1、 MIL-DTL-b24bLE 99999Ob 2076636 726 m INCH-POUND I MIGDTL-6246 lE(AT) 1 December 1998 SUPERSEDING 11 April 1997 MIL-PRF-6246 lD(AT) DETAIL SPECIFICATION TRANSMISSION ASSEMBLY This specification is approved for use by U.S. Army Tank-automotive and Armaments Command, Department of the Army, and is ava
2、ilable for use by ali Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a transmission with an integral torque converter that consists of the main assembly and a control valve. The transmission assembly will be referred to, herein, by the term trans
3、mission. The transmission is a counter-shaft type with extemai clutches and a six-speed self-contained unit with the necessary gearing, shafting, spacers, bearings and all other parts required for satisfactory operation (see 6. i). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this se
4、ction are specified in sections 3 and 4 of this Specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are
5、cautioned that they must meet all specified requirement documents cited in sections 3 and 4 of this specification, whether or not they are listed. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to:
6、 U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-EBLUE, Warren, MI 48397-5000, by usiig the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter. AMSC NIA FSC 2520 DISTRIBUTION STATEMENT A. Approved for public release; distr
7、ibution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-mIL-DTL-6246ltE 9999906 2076637 662 m MIL-DTL-6246 lE(AT) 2.2 Government documents. 2.2.1 Soecifications. standards. and handbooks. The following specifications, standards, and han
8、dbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFI
9、CATIONS DEPARTIVENT OF DEFENSE MIL-PRF-2 104 MIL-PRF-22750 MIL-PRF-46 167 MIL-C-46 168 MIC,-C-53039 MIL-DTL-62462 MIL-V-62468 - Lubricating 04 Inted Combustion Engine, - Coating, Epoxy, High Solids. - Lubricating Oil, Internal Combustion Engine, Arctic. - Coating, Aliphatic Polyurethane, Chemical Ag
10、ent - Coating, Aliphatic Polyurethane, Single Component, - Engine, Diesel, Liquid-Cooled, 8 Cylinder: - Vehicle, Armored Combat Earthmover, M9 ACE. Combatactical Service. Resistant. Chemical Agent Resistant. 4 Cycle, V-Type, 220 KW (295 HP). (Uness otherwise indicated, copies of the above specificat
11、ions, standards, and handbooks are available fiom the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 11-5094.) 2.2.2 Other Government documents. drawings. and publications. The following other Government documents, drawings, and publications form a part of
12、 this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS DEPARTMENT OF DEFENSE 1233 1877 - Transmission Assembly. 132 14E2449 - Control Valve. (Copies of these drawings are available fiom the U.S. Army Tank-automotive and Arm
13、aments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-6246LE H 9999906 2076638 5T m NUCLEAR REGULATORY COMMISSION (NRC) Code of Federal Regulations (CFR) - Tit!e 10, Parts 30 and 40.
14、 (Copies of the Code of Federal Regulations (CFR) are available fiom the Superintendent of Documents, U. S. Government Printing Office, Washington, DC 20402.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this docum
15、ent takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQULREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to fist article inspection in accordance with 4.1.1. 3.2 Design
16、and construction. The design and construction of the transmission shali be as specified herein and in accordance with Drawing 1233 1877. The construction of the control valve shall be in accordance with Drawing 13214E2449. The transmission shall have a single stage three element integral torque conv
17、erter, shd be designed to accept input power fiom a diesel engine conforming to MIL-DTL-62462, and shall transmit power and torque commensurate with use in a vehicle conforming to MIL-V-62468. 3.2.1 Accessories and equipment. Ail accessories and equipment sha be installed and properly adjusted. Elec
18、trical accessories and equipment, including wiring and electrical connections, shall be waterproof and shall conform to the applicable drawings (see 3.2). 3.2.2 Weight. The dry weight of the transmission shall be not more than 1350 pounds (lb) (612 kilograms (kg), and the weight with residual oil sh
19、all be not more than 1400 lb (635 kg). 3.3 Materials. Materials used shall be as specified herein and in applicable drawings (see 3.2). Materials not thereby designated shall be in accordance with the mandacturers material specifications for transmissions meeting the requirements as specified herein
20、. 3.3.1 Recycled. recovered. or environmentay preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantage
21、ous life cycle costs. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.2 Hazardous materials. Asbestos, cadmium, and radioactive materials shall not be used in this item. Radioactive material is defined by CFR, Title 10, Parts 30 and 40, and oth
22、er radioactive material in which specific activity is greater than 0.002 microcuries per gram or the activity per item equals or exceeds 0.01 microcuries. 3.3.3 Rubber Components. Rubber components shall be ozone resistant to the degree specified in the applicable specification or drawing. No load i
23、nput speed (SO rpm) Gear range 1800 1 st 1800 2nd 1800 3rd 1800 4th 1800 5th 1800 6th 3.4 ODeratinP: reauirements. The transmission shall meet the operating requirements as specified in Drawing 1233 1877 and 3.4.1 through 3.4.3 when coupled with a power source Conforming to MIL-DTL-62462. Forward sp
24、eed Reverse speed (rpm minimum) (rpm minimum) 320 344 485 518 776 1170 1999 3003 3.4.1 OutDut speed. Minimum output speeds shd be in accordance with table I. Input Clutch Converter-out speed, pressure, flow, min rpm psi (a) (wmin) 11 1800 f 20 180-220 17.4 (68) 1800 2 20 180-220 20.0 (78) 1800 f 20
25、180-220 17.4 (68) (1240-1 5 17) (1240-1517) dnimUm (1240- 15 17) minimum Converter-out Lube Lube temperature, temperature, pressure, OF (“C) OF (“C) psi (a) 180-220 180-220 15-40 180-220 180-220 15-40 180-220 180-220 15-40 (82- 104) (82-104) (103-276) (82-1 04) (82-1 04) (1 03-276) (82- 104) (82- 1
26、04) (103-276) 3.4.2 Oil pressure and flow. The transmission, with an input speed of 1800 f 20 revolutions per minute (rpm), no load at the output, and a converter out temperature of 200 k 20 degrees Fahrenheit (OF) (93 f 11 degrees Celsius (OC), shall attain the oil pressures and flows as specified
27、in table II without evidence of leakage or any other damage. Direction and range R- 1,2 N F- 1,2, 3,439 6 - 1/ gdmin = gallons per minute, L/min = liters per minute 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-6246 1E(AT) 3.4.3 Seals. Se
28、als shall restrict the entrance of ali foreign material into beatings exposed to contamination during transmission operation in any condition. The seals shaU prevent lubricant leakage and water contamination of the lubricants. 3.5 Support and ownership requirements. The transmission shall meet the s
29、upport and ownership requirements as specified in 3.5.1 through 3.5.3. 3.5.1 Durability. The transmission shall have a 50 percent (%) probability of completing the first 600 hours of operation commensurate with operation on the M9 mission proles as specified in MIL-V-62468, without replacement, rebu
30、ilding or overhauling. 3.5.2 Finish. Unless otherwise specified (see 6.2), the transmission shall be cleaned, treated, primed and painted in accordance with standard commercial practice. All parts of the transmission that are exposed to chemical contaminants shall be painted with a coating conformin
31、g to MIL-PFW-22750, MIL-C-46168, or MIL-C-53039, as applicable. 3.5.3 Identification markins. The transmission and each major component shail be permanently and legibly marked with an identification plate that includes, as a minimum, the following information: a. National stock number (NSN). b. Manu
32、facturers serial number. c. Manufacturers name and CAGE code. d. U.S. 3.6 Operating environment requirements. The transmission shail meet the operating environment requirements as specified in 3.6.1 through 3.6.4. 3.6.1 Hieh temperature. The transmission shaii operate through all gear ranges at an a
33、mbient temperature of 120F (49C) without damage or maifnction. 3.6.2 Low temperature. The transmission shall operate through all gear ranges, without benefit of solar radiation, after being cold soaked to an ambient temperature of -26F (-32C) without damage or malfunction. 3.6.3 Leakage decay. The t
34、ransmission components, connections, gaskets, seals, and joints shall be flee of leaks when completely submerged in water. 3.6.4 Steam and waterjet cleanina The transmission shall withstand steam cleaning and high pressure waterjet washing without deterioration of seals, water leakage past seals or
35、gaskets, or other evidence of damage. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-6246 lE(AT) 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article in
36、spection (see 4.1.1). b. Conformance inspection (CI) (see 4.1.2). 4.1.1 First article inspection. When specified (see 6.2 and 6.3), rst article inspection shall be performed on preproduction or initial production samples as specified in 4.1.1.1 and4.1.1.2. 4.1.1.1 Preproduction inspection. When spec
37、ified (see 6.2), the preproduction sample shall consist of two transmissions. Preproduction inspection shall consist of the all the verifications as specified in table m. 4.1.1.2 Initial Droduction inspection. Unless otherwise specified (see 6.2), the Government shall select two from the first ten t
38、ransmissions produced under the production contract for initial production inspection. Initial production inspection shad consist of the all the verifications as specified in table III. TABLE III. Title Design and construction Accessories and equipment Weight Materiais Hazardous materials Operating
39、requirements output speed Oil pressure and flow . seals Support and ownership Durability Finish Identification markmg Operating environment requirements High temperature Low temperature Leakage decay Steam and waterjet cleaning requirements 2lassification Requirement 3.2 3.2.1 3.2.2 3.3 3.3.2 3 -4 3
40、.4.1 3.4.2 3.4.3 3.5 3.5.1 3.5.2 3.5.3 3.6 3.6.1 3.6.2 3.6.3 3.6.4 f inspections. Verification 4.4.1 4.4.1 4.4.1 4.4.2 4.4.2 4.4.3 4.4.3.1 4.4.3.2 4.4.3.3 4.4.4 4.4.4.1 4.4.4.2 4.4.4.3 4.4.5 4.4.5.1 4.4.5.2 4.4.5.3 4.4.5.4 CI (100%) X X 6 Provided by IHSNot for ResaleNo reproduction or networking pe
41、rmitted without license from IHS-,-,-MIL-DTL-624bLE W O6 2076642 T2T = MIL-DTL-6246 lE(AT) 4.1.2 Conformance inspection. Unless otherwise specified (see 6.2 and 6.4), each transmission shall be tested in accordance with the 100% CI verifications as specified in table III. As specified in the contrac
42、tual sampling plan (see 6.2), select transmissions shaii complete and pass the tests as specified in 4.4.1 , 4.4.4.2, and 4.4.4.3. 4.2 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shau be conducted under the following conditions: a. Air temperature: 73 f 18F (23 f SOC
43、). b. Barometric pressure: 28.5 (+2, -3) inches mercury (in. Hg) (725 (+50, -75) millimeters Hg) c. Relative humidity: 50 f 30%. 4.3 Verification methods. The types of verification methods included in this section are visual, measurement, sample tests, full-scale demonstration tests, simulation, mod
44、eling, engineering evaluation, component properties analysis, and similarity to previously-approved or previously-qualified designs. 4.3.1 Verification alternatives. The mandacturer may propose alternative test methods, techniques, or equipment, including the application of statistical process contr
45、ol, tool control, or cost-effective sampling procedures, to veri performance. See the contract for altematives that replace verifications required by this specification. 4.4 Order of inspection. The following tests shall be in any order except that the seals verification (see 4.3.3.3) shail be perfo
46、rmed at the conclusion of each test. 4.4.1 Design and construction verifications. Use one or more of the methods outlined in 4.3 to vem the following. a. That the transmission, operating with a single stage three element integrai torque converter, is built in accordance Drawing 1233 1877, and the co
47、ntrol valves are accordance with Drawing 13214E2449. b. That the transmission is designed to accept input power from a diesel engine conforming to MIL-DTL-62462, and transmit power and torque commensurate with its use on a vehicle conforming to MIL-V-62468. c. That all accessories and equipment are
48、instaiied on the transmission, properly adjusted, and in accordance the applicable drawings as specified in (a). d. That the dry weight of the transmission is not more than 1350 lb (612 kg), and the weight with residual oil is not more than 1400 lb (635 kg). 4.4.2 Materials verification. Use one or
49、more of the methods outlined in 4.3 to ven that transmission is made with the material requirements as specified in applicable drawings (see 4.4.l(a), and does not contain asbestos, cadmium, or any other radioactive material. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DIL-6246 lE(AT) 4.4.3 ODeratins requirements verifications. Complete and pass
