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|  MIL-T-12407X(AT)
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3.4.2.3 Battery. Each battery shall be of 12-volt potential. The total reserve capacity
ratings and the total cold cranking ratings at 0F, both measured in accordance with SAE J537,
shall be not less than specified in table I. The batteries shall be of the maintenance-free type
having the maintenance-free characteristics listed in W-B-131. When specified (see 6.2), a high
cycle life (deep cell) battery shall be provided.
Table I. Batteries.
Reserve Capacity
Cold Cranking
Engine Type
(minutes)
(amperes)
Diesel
320
1,200
Gasoline
100
450
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3.4.2.4 Lighting. All vehicle lights, reflectors and wiring shall conform to Federal Motor
Carrier Safety Regulations 393.12, 393.19, 393.20 and 393.22 through 393.26(d).
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3.4.2.5 Turn signals. Turn signal lamps shall conform to SAE J588. Operating units shall
conform to SAE J589, class A, and shall be mounted on the steering column. Turn signal units
shall be installed in accordance with SAE J588. Turn signal operating units shall have a visible
and audible type flash indicator.
3.4.2.6 Radio interference suppression. The vehicle shall be suppressed to limit
electromagnetic radiation in accordance with SAE J551. Any body equipment emitting radio
interference shall be suppressed to the same level as the vehicle chassis.
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3.4.3 Fuel system. The fuel system shall conform to Federal Motor Carrier Safety
Regulations 393.65 and 393.67, except compliance with 393.67(c), subparagraphs (1), (4)(ii),
(7)(ii), (8), (9), (11); 393.67(d); and 393.67(f) is not required. The total capacity of the fuel
tank(s) shall be not less than 20 gallons. When more than one tank is furnished on gasoline engine
driven vehicles, a selector valve connecting either tank to the engine fuel intake shall be provided,
and means shall be provided to monitor the fuel level of either tank from a single gage; or an
equalizing pump shall be used to maintain the same fuel level in both tanks. When more than one
tank is furnished on diesel engine driven vehicles, means shall be provided to assure an equalized
fuel level in both tanks or a selector valve and fuel monitor gage as described above shall be
furnished. Model 4x4 vehicle shall have the fuel tank protected by a metal shield (skidplate). The
tank shall be located in an area which will be free from hazards encountered in cross-country
operations.
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