TM-9-2815-205-24 Technical Manual for M113 Engine 6V53 6V53T Download
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GLOSSARY WORDS AND TERMS Term Definition Axial Situated around, in the direction of, on, or along an axis. Base Metal Original machined or cast metal form or shape. Parent metal Blend Repair A repair where defects are eliminated by smoothing out discrepancies. Brinelling A hardening of metal from excessive loading or pounding. Burr Local rise of material forming a protruding sharp point or high spot. Chipping Loss of material over larger area than that of nicks. Circumferential On the circumference Continuity Electrical resistance of 1 ohm or less Corrosion Chemical reaction between surfaces of material and environment to which it is subjected. Generally appears as rust on steel or as a light-colored, powdery coating on aluminum or magnesium. Advanced forms of corrosion will result in pitting. Crosshead Piston A two part piston consisting of a free-floating dome and skirt linked by a transverse pin. Counterbore A sunken machined surface around a machined hole usually for seal rings or packings. Crack Surface or material break caused by stress which results in partial or complete separation of material. Deburr To remove a burr from a machined surface. Deformation Loss of original shape, either local or over an area. Includes bends, twists, warps, bulges, dents, kinks, flattening, or crushing. Elongation Stretching or lengthening of original dimensions; usually applies to bolt holes. Erosion The wearing away by environment elements or by chemical reactions. Excessive Wear Obvious wear beyond expectations. Determined by inspector's experience. Term is applicable to parts visually inspected. Fretting Erosion from rubbing or wear Gouge A groove in or breakdown of metal surface from foreign contact under heavy pressure. Usually, loss of material rather than displacement. Groove A long, narrow channel or depression TM 9-2815-205-24 Glossary-1