MIL-T-62145 Trucks: Elevating Body, Diesel And Gasoline Engine Driven, 21,000 To 39,500 Pounds Gvw, 4X2 And 6X4, CommercialThis specification covers diesel and gasoline engine driven four-wheel, two-rear-wheel drive, and six-wheel, four-rear-wheel drive vehicles having minimum gross vehicle weights GVW of 21,000 to 39,500 pounds, for normal operating conditions. The vehicles are commercial trucks equipped with stake and platform or van bodies, capable of elevating the body and cargo to a specified height for loading and unloading the cargo into and out of aircraft. The 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 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49

MIL-T-62145E

3.5.5.4 Rotating warning light. An amber, rotating, vehicular warning light in accordance with MS51317-4 shall be provided. The rotating light shall be mounted on top of the cab for type I stake and platform and over the front door on the roof of the elevating body for type II van. The rotating light shall be operated by means of a separate switch with an indicator light located on the instrument panel and marked to indicate the function of the switch.

* 3.5.5.5 Cable. A color coded, multiconductor cable, enclosed in metal or plastic flexible loom, shall be routed up along the scissors mechanism to provide for electrical power and controls for the elevated body. The routing shall provide an ample radius at the center of the

scissors mechanism to minimize damage from flexing. The cable end connections and fastenings to the scissors mechanism shall provide for ready replacement of the cable.

3.5.6 Hydraulic system.

3.5.6.1 Hydraulic pump. A hydraulic pump with compatible pressure and flow capacities to operate all hydraulic components and accessories shall be furnished. The hydraulic pump shall be driven by a heavy duty power takeoff unit attached to the truck-chassis transmission. A

split-shaft power takeoff is not acceptable. Chain drives are not acceptable. The hoist pump shall be of the gear type. The pump continuous pressure rating shall be not less than that recommended by the hoist and cylinder manufacturer(s), with an intermittent rating not less than

500 pounds per square inch (psi) over the continuous rating. The system hydraulic pressure shall

be limited to not more than 2500 psi under any operating condition. The pump system shall include a built-in adjustable pressure relief valve(s) or unloading valve(s), with a range of adjustment which allow the operating and the test loads specified herein. The hydraulic pump shall be capable of operating in ambient temperatures from minus 40 F to plus 125 F.

3.5.6.2 Neutral switch. A neutral switch shall be furnished. The neutral switch shall be activated when the transmission is in neutral to operate the pump. When an automatic transmission is provided, a brake lock shall be provided that will not permit the pump to operate unless the brake lock is activated.

3.5.6.3 Automatic throttle actuator. An automatic hydraulic or electric throttle actuator shall be furnished. The actuator shall automatically increase the truck engine speed when the pump is being loaded, and automatically decrease the speed of the truck engine when no load is being imposed.

3.5.6.4 Hydraulic reservoir. A hydraulic reservoir shall be furnished. The reservoir shall be equipped with a drain, a filler opening cap attached to the reservoir by a corrosion-resistant chain, and internal baffles to prevent excessive surging of the fluid. A dip stick or sight gage