MIL-T-14382 Truck, Ambulance: Diesel Or Gasoline Engine Driven, 10, 000 Pounds Gvw, 4X4, 4-Liter Commercial, Field TypeThis specification covers diesel or gasoline engine driven, four-wheel, four-wheel drive, field type ambulance trucks having a gross vehicle weight GVW rating of not less than 10,000 pounds. Vehicles procured under this specification are commercial items which shall be warranted by the manufacturer as specified in acquisition documents.

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MIL-T-14382W

(d)        A fuel warmer or preheater shall be provided on diesel engine driven vehicles to prevent clogging of fuel filters due to wax crystallization in the fuel.  The fuel warmer shall use engine coolant to transfer sufficient heat to the diesel fuel to heat it from an inlet temperature of minus 40°F to an outlet temperature of plus 9°F, with a flow rate not less than the maximum fuel demand of the engine fuel system.  A coolant shutoff valve shall be provided for the coolant inlet side of the fuel warmer unit.

3.4.1.8  Fuel fired engine preheater.  When specified (see 6.2), for diesel engine driven vehicles, a diesel fuel fired engine coolant heater shall be furnished to preheat the engine.  The heater shall include a timer, a thermostat and a circulating pump and shall be connected directly across the engine coolant inlet and outlet.  The heater shall be capable of starting and operating at minus 60°F and shall heat the engine to plus 40°F from minus 60°F in not more than 1 hour.  The system shall be equipped with a light, visible to the driver, to indicate that the preheater is operating.

3.4.2  Electrical system.  The electrical system shall be in accordance with Federal Motor

Carrier Safety Regulations 393.27 through 393.31 and 393.33.

3.4.2.1  Starting system (diesel engine).  For diesel engine driven vehicles, a 12 or 24-volt direct current (dc starting system, with a 12-volc dc lighting system, shall be furnished.  Unless otherwise specified (see 6.2), a minimum 90-ampere alternator shall be furnished which provides a dc output capacity, at normal engine idle speed, adequate to support all electrical loads operating simultaneously, except the winch.  Engine starting equipment shall include au ether starting system or a glow plug.  If an ether system is furnished in lieu of a glow plug, it shall be

of the measured shot type.  The measured shot type ether system shall be key operated or

manually operated from the driver's compartment, and shall be inoperative with the engine warm. Complete provisions for a replaceable reservoir of not less than 12 fluid ounces shall be

furnished.  A reservoir need not be furnished.

3.4.2.2  Ignition system (gasoline engine).  For gasoline engine driven vehicles, a 12-volt dc system shall be furnished.  Unless otherwise specified (see 6.2), an alternator of not less than

60 amperes rated capacity shall be furnished which provides a dc output capacity, at normal engine idle speed, adequate to support all electrical loads operating simultaneously, except the

winch.

3.4.2.3  Battery.  The battery furnished shall be of 12-volt potential.  The total reserve capacity ratings and the total cold cranking ratings at 0°F, both measured in accordance with

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