MIL-T-62491C
circuit breaker that will protect the motor from overcrank heat damage. The circuit breaker shall not limit cranking ability for a startable engine.
* 3.4.2.2 Ignition system. For gasoline engine driven vehicles, a 12-volt dc ignition system shall be furnished.
* 3.4.2.3 Alternator. Unless otherwise specified (see 6.2), a minimum 85-ampere alternator shall be furnished. The alternator output with the engine at idle speed shall be not less than
45 amperes.
* 3.4.2.4 Lighting. All vehicle lights, reflectors, and wiring shall conform to Federal Motor Carrier Safety Regulations 393.12, 393.13, 393.19, 393.20 and 393.22 through 393.26(d). Lights and reflectors shall not be mounted on vertical surface of rub rails or mounted on vehicle bumpers (unless recessed and fully protected). Positioning and guarding shall permit normal replacement
of the bulbs and lenses. When right-hand drive is specified by acquisition documents, left dip headlights shall be provided. Left-dip headlights may be provided as a replacement set, stowed in the cab for shipment.
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. On class 10 vehicles, front turn signal lights may be integral with parking lights. Turn signal units shall be installed in accordance with SAE J588. Turn signal operating units shall have a visible flash indicator.
3.4.2.6 Batteries. Each battery shall be of 12-volt potential. The total reserve capacity ratings and the total cold cranking ratings at -18°C (0°F), both measured in accordance with SAE J537, shall be not less than specified in table VIII for the indicated engine type. The
batteries shall be of the maintenance-free type having the maintenance-free characteristics listed in
W-B-131.
Table VIII Batteries.
*
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