MIL-T-62320 Trucks, Van: Shop, Diesel And Gasoline Engine Driven, 19,000 Pounds Gvw, 4X2 And 4X4, CommercialThis specification covers diesel and gasoline engine driven, four-wheel, two-rear-wheel drive, and four-wheel, four-wheel drive, shop van trucks having a minimum gross vehicle weight GVW of 19,000 pounds for normal operating conditions. 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-62320C

the curb weight, the operator weight at 175 pounds and the payload required to provide the specified GVW. The calculated imposed loads on the front and rear axles shall be compared to the suspension, axle and tire load capacity ratings to determine if these components are of adequate capacity to meet contractual requirements.

* 4.3.2 Road test.

4.3.2.1 Road test model 4x2. The first production vehicle, for model 4x2, shall be examined and road tested (less payload) by the contractor to assure that the vehicle will operate in accordance with contractual requirements. The road test shall be for not less than 10 miles at speeds up to 50 mph.

4.3.2.2 Road test model 4x4. The first production vehicle, for models built to all wheel drive (model 4x4) while on the chassis manufacture's production line, shall be road tested by the contractor without payload. The road test shall be for not less than 10 miles at speeds up to

55 mph. The vehicle, for all wheel drive models qualifying under 3.1.1.12, shall be road tested with and without payload. Payload shall be distributed first, so that the front axle is loaded to GAWR and the vehicle is loaded to GVW and second, with the rear axle loaded to GAWR and the vehicle loaded to GVW. The road test for each of the three conditions shall be for not less than 30 miles at speeds up to 50 mph over highways and gravel roads and for not less than

5 miles at speeds up to 15 mph over cross country terrain with ground and grade requiring all

wheel drive. During the loaded and empty portions of the road test, the brakes shall be applied firmly, bringing the vehicle to a sudden stop not less than 5 times during each portion of the road test. During the road test, the front and rear suspension of the drivetrain shall be periodically inspected for interference and contact with other vehicle components. Abnormal contact of the drivetrain or suspension components with other components shall be cause for rejection. Front spring bumpers shall not make contact with frame stops except under the most extreme cross country conditions. Operational or mechanical failures of vehicle components during the road test shall be cause for rejection. Failure includes permanent deformation as well as breakage.

* 4.3.3 Truck body treatment and painting. The certification regarding the body cleaning, treating, prime painting and salt spray resistance testing, as required by MIL-STD-1223, shall be made to Government representatives at the first production vehicle inspection.

4.3.4 Wood treatment certification. Manufacturer's records acceptable to the Government shall be furnished to verify that all wood requiring treatment in accordance with MIL-STD-1223 has been treated.