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.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26

MIL-T-2452J

3.3.1.2 Low speed. Low speed shall be calculated with the engine operating at not less than 35 percent of recommended governed speed and shall provide a vehicle speed not greater than 4 mph.

* 3.3.1.3 Maximum geared speed. The maximum geared speed at engine governed speed shall be not less than 58 mph. Conformance to the geared speed specified shall be determined by calculating in accordance with the following formula:

Maximum geared speed (mph)= Governed speed (rpm) Total gear reduction x tire factor (see 6.3).

3.3.2 Service brakes. The service brakes shall control and hold the vehicle on a

30 percent grade when the vehicle is loaded to its specified GVW. The service brakes shall stop

the vehicle, loaded to specified GVW, within the stopping distance requirements of Federal

Motor Carrier Safety Regulation 393.52.

3.4 Chassis components.

3.4.1 Engine. The engine furnished shall be the chassis manufacturer's standard or optional engine for the commercial model truck which meets or exceeds the requirements of this specification.

* 3.4.1.1 Diesel engine. Unless otherwise specified (see 3.4.1.2), the vehicle shall be equipped with a liquid cooled, compression ignition, two-stroke or four-stroke cycle diesel engine, with not less than six cylinders. Diesel engines for class A vehicles shall have not less than 4 four cylinders. Engine net horsepower figures used in performance prediction calculations shall be determined in accordance with SAE J1349.

* 3.4.1.2 Gasoline engine. When specified (see 6.2), the vehicle shall be equipped with a liquid cooled, internal combustion, four-stroke cycle gasoline engine, with not less than

six cylinders. The engine furnished shall provide the required vehicle performance when

operated on unleaded fuel with a research octane rating of 91 at an engine speed of not more than the manufacturer's recommended operating speed. The engine shall be capable of warranted operation on unleaded fuel when used in accordance with the operator's manual. Net

horsepower used in performance prediction calculations shall be determined in accordance with

SAE J1349.

* 3.4.1.3 Oil filter. A full flow type oil filter shall be furnished. When specified for diesel engine driven vehicles (see 6.2), an independently mounted, minimum 10-quart, bypass oil filter with replaceable element, or the manufacturer's standard bypass filter, shall be furnished in addition to the full flow filter.