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Truck body treatment and painting |
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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.
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