MIL-T-52698A
3.3.1 Material deterioration and control. The item(s) shall be fabricated from compatible materials, inherently corrosion resistant or treated to provide protection against the various forms of corrosion and deterioration that may be encountered in any of the applicable operation and storage environment to which the item may be exposed.
3.3.2 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each other unless protected against galvanic corrosion. Dissimilar metals and methods of protection are defined and detailed in MIL- STD-889.
3.3.3 Identification of materials and finishes. The contractor shall identify the specific material, material finish or treatment for use with component and subcomponent, and shall make information available upon request to the contracting officer or designated representative.
3.3.4 Castings. Castings shall be of the quality normally used in the materials handling industry for this type of truck, and the castings shall be free from blowholes, porosity, shrinkage, cracks, or other defects. Castings shall not be repaired to adversely affect the strength, or intended use. Sufficient finish shall be allowed to permit machining for leak -free sealing at covers, closure points, and fasteners.
3.3.5 Bearings. Unless otherwise specified herein, rotating parts shall be mounted on ball or roller bearings to the extent normally provided in the material handling industry for this type of truck. Bearing load capacity, including applicable safety and life factors, as recommended by the gearing manufacturer, shall be equal to or greater than maximum bearing loading required for the truck to complete all operations specified herein.
3.3.6 Lubrication. Lubrication means shall be provided for all moving parts that require lubrication, except where sealed permanent lubrication is provided. The types of lubricants shall be selected from, and be in
accordance with, SAE J754. All initial fills of lubricants shall be limited to the types approved by the component manufacturers. Grease lube fittings shall conform to SAE J534.
3.3.7 Recovered materials. For the purpose of this requirement, recovered materials are those materials which have been collected from solid waste and reprocessed to become a source of raw materials, as distinguished from virgin raw materials. The components, pieces and parts incorporated in the trucks may be newly fabricated from recovered materials to the maximum extent
practicable, provided the trucks produced meets all other requirements of this specification. Used, rebuilt or remanufactured components, pieces and parts shall not be incorporated in the trucks.
3.4 Construction. Trucks shall be constructed for the rated load, at a
24-inch load center measured from the face of the forks, and at a minimum lift height of 130 inches. Truck construction shall insure safe, efficient, and economical operation under all operating conditions specified herein. There shall be no evidence of accelerated wear, failure, or permanent deformation when the trucks are operated under any condition specified herein.
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