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.

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 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 - 50 - 51 - 52 - 53 - 54 - 55 - 56 - 57 - 58 - 59 - 60 - 61 - 62

MIL-T-62518A

hydraulic fluid pressure from the hydraulic system of the aerial platform. Discharge port(s) and return port(s) shall be provided with a corrosion-resistant cap, secured with a corrosion-resistant chain or cable, to protect the threads and the valve from contamination. A tool circuit with quick disconnect, dripless couplers shall be furnished for attaching the pressure and return hose lines

for the motor driven hydraulic tools. The oil flow for the tools shall be regulated by control valve(s) to meet the flow requirements of the hydraulic tools. The high system pressure (working pressure) shall be not less than 1,600 psi and the back pressure in the return line shall not exceed 1030 kN/m2 (150 psi).

3.6.11.1.1 Basket hydraulic tool outlet and hose. Unless otherwise specified (see 6.2), a hydraulic tool outlet shall be furnished in the basket(s). An 2440 mm (8-foot) dual hydraulic hose for use in the basket(s) shall be furnished. The hose shall be of the flexible, nonconductive type with quick disconnect dripless fittings on each end. Hose fittings shall be compatible with the basket outlet and the tools specified in 3.6.11.3 through 3.6.11.9. The hose ends shall be provided with dust caps.

* 3.6.11.2 Ground tool hose. Except when a ground hydraulic tool outlet is not required (see 3.6.11.1), or when a hydraulic hose reel is specified (see 3.6.11.11), two 15 m (50-foot) lengths of hydraulic wire braid hoses with quick disconnect, dripless couplers on both ends, for use at ground level, shall be furnished. Warning plate markings (see 3.1.1.2.1) shall warn that the wire braid hydraulic hoses shall not be used on or near electrical lines. The hoses shall be furnished with dust caps. Hose fittings shall be compatible with the tool outlet specified in

3.6.11.1 and the tools specified in 3.6.11.3 through 3.6.11.9.

* 3.6.11.3 Hydraulic capstan hoist. When specified (see 6.2), a hydraulic capstan hoist shall be furnished. The drum shall be one-direction drive and shall have a backstop on the output shaft to prevent reverse travel. (Lowering will be accomplished by letting the rope slip on the

drum.) The capstan hoist shall be complete with a link chain and screw clamp attachment device

for mounting to surfaces other than on a round pole. The hoist shall have a rated single line pull capacity of not less than 567 kg (1,250 pounds) on the bare drum. The hoist shall have a remote control, foot-operated, open-center valve.

* 3.6.11.4 Hydraulic impact wrench and drill. When specified (see 6.2), a hydraulic impact wrench and drill shall be furnished. This combination tool shall be reversible and capable of installing or removing lag screws and other hardware. The tool shall have a capacity for

1.063 inch drills, for 16 mm (0.625 inch) bolts, and shall include a 13 mm (0.5 inch) square drive

socket. The tool shall be capable of developing not less than 200 foot- pounds of torque with at least 1,350 impacts per minute. A quick change drill chuck shall be furnished.