Glossary “gross combination weight (GCW)” Definition:
The total weight of a fully equipped vehicle including payload, fuel, and driver.
g
grit numbering system
Glossary “grit numbering system” Definition:
Denotes how course or fine the abrasive is. Low numbers denote a course abrasive, while a higher number denotes a finer abrasive.
grit size
Glossary “grit size” Definition:
Term that refers to the courseness of sandpaper.
grille
Glossary “grille” Definition:
Ornamental opening in the front of a vehicle through which air is delivered to the radiator.
grind
Glossary “grind” Definition:
1). To use an abrasive wheel to remove metal. 2). The specific contour of a camshaft lobe, such as a quarter-race grind. 3). A long race with emphasis on endurance rather than performance.
grinders
Glossary “grinders” Definition:
Used for fast removal of material. They are often used to smooth metal joints after welding and to remove paint and primer.
gringing discs
Glossary “gringing discs” Definition:
Round course abrasives used for initial removal of paint and metal (weld joints).
grip
Glossary “grip” Definition:
Term used for traction.
grit
Glossary “grit” Definition:
Fine dust or dirt. Numberical rating of the courseness or sanding discs.
greenhouse
Glossary “greenhouse” Definition:
Upper part of a vehicle body, including the windows, pillars, and roof.
greenhouse effect
Glossary “greenhouse effect” Definition:
A greenhouse is warmed because glass allows the sun’s radiant heat to enter but prevents radiant heat from leaving. Global warming is caused by some gases in the atmosphere that like greenhouse glass, hence, the term greenhouse effect.
grid
Glossary “grid” Definition:
The lead-alloy framework (support) for the active materials of an automotive battery.
grease gun
Glossary “grease gun” Definition:
Device used to lubricate high friction points on a vehicle’s steering and suspension components. Used to apply lubrication to driveline univerial joints.
grease plug
Glossary “grease plug” Definition:
A small plug in a lubrication hole where there is a danger of over lubrication by high-pressure equipment. It is removed for lubrication and then reinstalled.
greasesweep
Glossary “greasesweep” Definition:
An absorbent material, such as hull ash or kitty litter used for clean up spills.
greasy friction
Glossary “greasy friction” Definition:
Friction between two surfaces coated with a thin layer of oil.
grds
Glossary “grds” Definition:
Acronym form of Guards
grease
Glossary “grease” Definition:
Lubricant consisting of a stable mixture of oil, soap thickeners (usually lithium, sodium, or calcium), and other ingredients for the desired physical or operating characteristics.
grease fitting
Glossary “grease fitting” Definition:
The orifice, having a check valve, that a grease gun fits on during the greasing process.
gray market
Glossary “gray market” Definition:
The individual importing of a foreign car into the United States.