MIL-T-62518 Trucks, Maintenance: With 9 To 37 Meters 30 To 120 Foot Multi-Position Aerial Platform, Modified CommercialThis specification covers diesel and gasoline engine driven, four-wheel, two-rear-wheel drive; four-wheel, four-wheel drive; and six-wheel, four-wheel-drive trucks having minimum gross vehicle weights GVW of 6800 kilograms kg 15,000 to 22 700 kg 50,000 pounds, equipped with maintenance bodies and 9 to 37 meters m 30 to 120 foot multi-position, articulating, boom type aerial platforms. 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-62518A

repeat the in-process inspection. Upon Government verification that the tests and inspections were successfully conducted and witnessed by the Government, the tests of 4.3.2.1 and 4.3.2.2 need not be repeated.

4.4.5 Upsetting and range of movement test. With the truck resting on approximately level ground, without payload, and not fastened to any artificial base, the basket(s) shall be loaded

with two times the specified payload (see 3.6.5). The basket(s) shall be extended to its full reach and exercised through the full range of traverse and elevations indicated in 3.3.3, and shall

include at least the following positions:

(a) When the upper and lower booms are in a horizontal, or in their most horizontal, plane and extended to maximum reach

(b) When the lower boom is horizontal, or near horizontal, and to the side of the vehicle, and the upper boom is in the most vertical position possible

(c) When the lower boom is at maximum travel from the stowed position, and the upper boom is horizontal and 45 degrees to the side of the vehicle, or over the four corners of

the vehicle. Rotate turntable with twice the specified load (see 3.6.5) 360 degrees and stop each 15 degrees. Reverse the turntable and stop each 20 degrees.

The inner dual tire shall be observed for conformance to the stability requirements of 3.3.3 with twice the load (see 3.6.5). The test shall be repeated with 1.5 times the specified payload

(see 3.6.5) and the outriggers and all tires observed for conformance to the stability requirements

of 3.3.3 with 1.5 times the load.

* 4.4.6 Wind test. With the vehicle not loaded, with the outriggers extended, and the rated capacity placed in the basket(s), the boom assembly shall be extended to maximum height and shall be rotated to that position whereby the greatest area of the basket(s) is parallel to the longitudinal centerline of the vehicle. The specified wind load, generated by artificial means or by an equivalent simulated load, shall be applied to the vehicle from either side (see 3.3.4).

4.4.7 Speed test. With the vehicle resting on approximately level ground, the basket(s) shall be loaded with specified load (see 3.6.5). The basket(s) shall be traversed and elevated to determine conformance to the requirements in 3.3.5, 3.3.6 and 3.3.7.

* 4.4.8 Creep test. With the vehicle longitudinal on a 5 percent grade, without leveling the vehicle, with specified load (see 3.6.5) in the basket(s), and with the hydraulic fluid stabilized at or near ambient temperature, the basket(s) shall be extended to the side with lower boom in vertical or nearest capable vertical position, and the upper boom in horizontal position. The position shall be held for at least 1 hour for maximum horizontal creep of 25 mm/h