TM-9-2815-205-24
6V53/6V53T ENGINES, DIESEL WITH CONTAINERS; MODEL 5063-5299, MODEL 5063-5392, MODEL 5063-5393 AND MODEL 5063-539L
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE
FEBRUARY 2013
TM-9-2815-205-24 - Page 835 of 856
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
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