MIL-T-2452 Trucks, Refuse Collection: Compaction Type, Rear Hopper Loading, With Tilt Cab, Diesel And Gasoline Engine Driven, 19,000 To 44,500 Pounds Gvw, 4X2 And 6X4, 10 To 25 Yard, CommercialThis specification covers diesel gasoline engine driven, 4-wheel, 2-rear wheel drive and 6-wheel, 4-rear wheel drive, commercial, compaction type, refuse collection trucks having a minimum gross vehicle weight GVW 19,000 to 44,500 pounds. The bodies shall be of 10- through 25-cubic yard minimum rated capacities with rear hopper loading. 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-2452J

* 3.4.1.4 Cooling system. The cooling system shall maintain the engine coolant at a temperature below the boiling point with the vehicle loaded to rated GVW and operated at an altitude of 10,000 feet above sea level or in an ambient air temperature of not less than

125 degrees Fahrenheit ( F). The cooling system shall include a surge tank or a coolant recovery reservoir of not less than 2-quart capacity. A high coolant temperature or low coolant level

alarm buzzer and a red indicator warning light shall be provided on the instrument panel. A

radiator servicing access door shall be provided on the instrument panel. A radiator servicing

access door shall be provided to allow verification of the coolant level.

3.4.1.5 Coolant temperature control. Thermostatic control of engine coolant temperature shall be provided. On diesel engine driven vehicles, control shall include partial thermostatic control of coolant flow through the radiator and thermostatically controlled radiator shutters or complete thermostatic control of all coolant flow through the radiator.

3.4.1.6 Governor. An engine governor shall be furnished and set to limit maximum engine speed to maximum recommended operating speed. The governor shall also provide an adjustable no-load speed setting which shall be maintained within 100 revolutions per minute (rpm) of the selected setting during the compaction cycle.

* 3.4.1.7 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.

3.4.1.8 Power plant heaters and fuel warmers. When specified (see 6.2), a coolant heater, an engine oil heater, and for diesel engine driven vehicles a fuel warmer shall be provided. Unless otherwise specified (see 6.2), a battery heater shall be provided when power plant heaters are specified. Heaters shall operate on 110-volt alternating current (ac), and shall be wired through a junction block to a single three-prong (male), weatherproof, slave receptacle for receiving external power and for grounding the vehicle. A three-wire connection cable,

25 five 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, weatherproof, three-pronged (two power plus one ground) male connector at the other end. Electrical apparatus shall conform to Federal Motor Carrier Safety Regulation 393.77(c)(7). The electrical insulation of the connecting cable shall withstand normal operating stresses in low ambient air temperature (down to minus 60 F) without cracking or loss of dielectric capacity. All heater lead wires shall be installed without interfering with vehicle