MIL-DTL-62461 Transmission AssemblyThis 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 \'transmission\'. The transmission is a counter-shaft type with external clutches and a six-speed self-contained unit with the necessary gearing, shafting, spacers, bearings and all other parts required for satisfactory operation \(see 6.1\).

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MIL-DTL-62461E(AT)

3.4.3 Seals. Seals shall restrict the entrance of all foreign material into bearings exposed

to contamination during transmission operation in any condition. The seals shall prevent lubricant

leakage and water contamination of the lubricants.

3.5 Support and ownership requirements. The transmission shall meet the support 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 profiles as

specified in MIL-V-62468, without replacement, rebuilding 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

conforming to MIL-PRF-22750, MIL-C-46168, or MIL-C-53039, as applicable.

3.5.3 Identification marking. The transmission and each major component shall be

permanently and legibly marked with an identification plate that includes, as a minimum, the

following information:

National stock number (NSN).

Manufacturer's serial number.

Manufacturer's name and CAGE code.

U.S.

3.6 Operating environment requirements. The transmission shall meet the operating

environment requirements as specified in 3.6.1 through 3.6.4.

3.6.1 High temperature. The transmission shall operate through all gear ranges at an

ambient temperature of 120�F (49�C) without damage or malfunction.

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 -26�F (-32�C)

without damage or malfunction.

3.6.3 Leakage decay. The transmission components, connections, gaskets, seals, and

joints shall be free of leaks when completely submerged in water.

3.6.4 Steam and waterjet cleaning. The transmission shall withstand steam cleaning and

high pressure waterjet washing without deterioration of seals, water leakage past seals or gaskets,

or other evidence of damage.