MIL-DTL-62073H(AT)
3.2.1.3 Rust-proofing. The trailer metal parts shall be treated and protected from
corrosion and rust in accordance with Army Drawing 12355846, such that the functional,
operational and performance capabilities are not deteriorated (see 4.6.2.1).
3.3 Marking and data plates. The identification marking and data plates shall include,
as a minimum, part or identification number (PIN) (see 6.5), the department of agency
identification, the registration number, and legend as specified for the appropriate military
agency (see 4.6.2). Marking shall be permanent and legible. When specified (see 6.2),
concealed marking shall be furnished. Data plates shall be in accordance with Class 2,
Composition C of A-A-50271. The transportation data plate requirements are defined in
drawing 12354275. The location of the data plate is described on drawing 8750137.
3.4 Treatment and painting. The vehicle shall be treated and painted in accordance
with Army Drawing 12355846 and shall meet the requirements specified herein (see 4.6.2 and
6.6).
3.4.1 Welding requirements. All steel weldments shall meet the design and
fabrication requirements in AWS D1.1/D1.1M. All welding equipment used in the building
items described herein shall be certified and all welders and operators have passed qualification
testing as prescribed in the applicable qualification standards established by the
AWS D1.1/D1.1M (see 4.6.1.1).
3.5 Operational requirements. Each trailer shall provide the following functional,
operational and performance capabilities.
3.5.1 Seals. The bearing seals shall prevent entrance of foreign matter into the
bearings exposed to contamination while fording or operating in mud, sand, or snow. Water
contamination of bearing lubricants shall not be more than 2.0% by volume. All bearing seals
shall restrict the leaking of lubricants from the bearings. (see 4.6.2.1).
3.5.2
Electrical.
3.5.2.1 Electrical circuits. Electrical circuits shall maintain continuity from end to end
without evidence of internal or external shorts during all trailer operating conditions (see
4.6.3.a).
3.5.2.2 Lights. Lights shall be capable of operation throughout all trailer operating
conditions and shall conform to SAE J1292 (see 4.6.3.b). Turn signal lamps shall conform to
SAE J588. The brake lights shall override the four-way emergency flashers or the two systems
shall be independent of each other.
3.5.2.3 Running Light Requirements. All running lights except blackout running light
requirements shall be of the commercial U.S. 12/24 volt (V) LED type that fully meets the
DOT/FMVSS requirements when 12 or 24 volts DC operate the running lights. License plate
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