MIL-T-62087 Truck: Compact Forward Control Van, Recruiter, 5,400 Pounds Gvw, 4X2, CommercialThis specification covers a forward control, gasoline engine driven, four-wheel, two-rear wheel drive, commercial integral cab-van-body compact type truck recruiter having a minimum gross vehicle weight GVW of 5,400 pounds. The vehicle is equipped with an elevating or stationary raised roof section. Vehicles procured under this specification are commercial items which are warranted by the manufacturer as specified in acquisition documents.

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MIL-T-62087E

*    3.4.1.2  Fan clutch.  A fan clutch shall be provided.  The fan clutch shall reduce the fan speed automatically when the fan is not required for engine cooling.  The fan clutch shall be asbestos free.

3.4.1.3  Power plant heaters.  When specified (see 6.2), a coolant heater and an engine oil heater shall be provided.  Unless otherwise specified (see 6.2), a battery heater shall be provided when power plant heaters are specified.  The heaters shall operate on 120 volts alternating current (ac) and shall be wired through a junction block, including a fuse or circuit breaker, to a single three-pronged (male), weatherproof, slave receptacle for receiving external power and

grounding the vehicle.  A three-wire connecting cable, 25 feet long and of adequate line capacity to supply power for all heater units simultaneously, shall be furnished.  The connecting cable shall include a matching female connector at the vehicle end and a standard, three-pronged

(two power plus one ground) male connector at the opposite end.  All electrical apparatus shall

conform to Federal Motor Carrier Safety Regulation 393.77(c)(7).  Electrical insulation of connecting cable shall withstand normal operating stresses in low ambient air temperatures (down to minus 60  F) without cracking or loss of dielectric capacity.  All heater lead wires shall

be installed without interfering with vehicle component operation, and without loose excess wire.

Provisions for stowage of the cable shall be provided in the vehicle cab.  Heaters shall be furnished as follows:

(a)        A coolant heater, 1000-watt minimum rating, shall be installed in the engine block or in the lower coolant inlet hose.  An engine thermostat with an operating range of 170  F to

195°F shall be installed.

(b)    An immersion type engine oil heater, 300-watt minimum rating, with 170  F to 195°F

thermostat, shall be installed in the oil pan through any convenient opening.

(c)     The battery heater shall have a capacity adequate to maintain the battery electrolyte at a

temperature of not less than 10  F during vehicle exposure in ambient air temperatures as low as minus 60°F, and shall embody a thermostat to limit the temperature of the electrolyte to not more than 80  F.

3.4.2  Electrical system.

3.4.2.1  Alternator.  An alternator of not less than 50 amperes rated capacity and which provides not less than 16 amperes dc at normal engine idle speed shall be furnished.

3.4.2.2  Battery.  The battery reserve capacity rating, measured in accordance with SAE J537, shall be not less than 100 minutes.  The cold cranking rating at 0  F, measured in accordance with SAE J537, shall be not less than 450 amperes.  The battery shall be of the maintenance-free type having the maintenance-free characteristics listed in W-B-131.

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