MIL-T-62079E
The insulation shall be either flexible or batt type, asbestos free fibrous or cellular material, having a moisture absorption capacity of less than 2 percent by weight. Materials shall be odorless and fire-retardant. The insulation shall neither breed nor promote the growth of fungus and shall neither cause nor accelerate corrosion of steel, copper or aluminum. The insulation shall be cemented to the inner side of external walls and provided with means to retain insulation under all operating conditions. The cement shall be waterproof and the resulting bond shall provide a shear strength sufficient to prevent sag of the insulation when the assembled vehicle is operated at speeds up to 55 mph over improved roads. All insulation, to the maximum practicable extent, shall be installed prior to the closing of spaces in the body sides, front and
rear panels, ends, doors, upright body members, roof, roof bows, and other parts.
3.6 Warning light. Unless otherwise specified (see 3.6.1 and 3.9.2), a rotating red warning light conforming to MS51317-2 shall be mounted, with reinforcement at the point of attachment on the cab roof, on the vehicle centerline. It shall be so located as to present minimum interference with the spotlight beam sweep (see 3.8). The light shall be operated by means of a separate switch located on the instrument panel in a location readily accessible to the driver. Illumination of the switch shall be provided by the instrument panel lighting system. The switch shall be marked to indicate switch function and "on" and "off" positions. The light shall be so mounted as to afford 360-degree visibility to all approaching traffic. At the option of the manufacturer, or when specified (see 6.2), the light shall be removed for shipment after the first production vehicle inspection (see 4.3). When removed, the light and mounting devices shall be packaged and stowed within the vehicle, and the roof opening shall be provided with a
weather-tight cover. Provisions for reinstalling the light, including access to the light wiring,
shall be provided.
3.6.1 Strobe light. When specified (see 6.2), in lieu of the warning light specified in 3.6, a strobe type warning light shall be furnished. The warning light shall be an integral solid-state unit, having a xenon tube peak output rating of not less than 1,000,000 candlepower and a flash rate of 90 + 15 flashes per minute. The strobe light unit shall include a xenon flash tube with optic lens, mounted in a weatherproof housing, with protective clear or colored dome and corrosion-resistant metal base. The housing shall be not less than 8-1/2 inches high and
8-3/4 inches base diameter. The warning light color shall be red. The mounting, installation, wiring and switch shall be as specified in 3.6.
3.7 Grille mounted warning lights. When specified (see 6.2), two red flashing warning lights shall be mounted behind the front bumper in the vicinity of the vehicle's front grille. The warning lights shall be installed on a horizontal plane through the centerline of the headlights. The warning lights shall be sealed beam lamps, 6 inches in diameter, with a minimum output
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