Glossary “valve assembly” Definition:
1). Tire valve stem that fits through the wheel to allow the tire to be filled with air or adjusted. Cap seals the valve and prevents foreign debris from entering and damaging the pin. 2). A term used for valve body assembly.
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valve body assembly
Glossary “valve body assembly” Definition:
An assembly containing the parts that act as the “brain” of an A/T, receiving messages on gear selected, vehicle speed, throttle opening and engine load, then operating automatically by sending fluid to apply the appropriate bands and/or clutches.
valve canting
Glossary “valve canting” Definition:
Non-parallel placement of valves in a cylinder head.
value guides
Glossary “value guides” Definition:
Used car price guide.
valve
Glossary “valve” Definition:
Circular-stemmed device used to control the flow or air/fuel mixture in and the flow of burned gasses out of the engine. Any device that controls the flow of liquids or vapors. May be started, stopped or regulated by a maovable parts opening, shutting or partially obstructing one or more parts or passageways.
valve angle
Glossary “valve angle” Definition:
The angle at which the valve face is machined.
validity list
Glossary “validity list” Definition:
List of valid bulletins supplied by the manufacturer.
valleys
Glossary “valleys” Definition:
Annular grooves or recessed areas between the lands of a valve spool.
valence bond
Glossary “valence bond” Definition:
Extent to which an atom combines or “bonds” with other atoms.
valence electron
Glossary “valence electron” Definition:
Electron in the outermost shell or orbit of an atom
valence ring
Glossary “valence ring” Definition:
Outermost orbital path of electrons around the nucleus of the atom.
valence shell
Glossary “valence shell” Definition:
Outermost shell or orbital path of an atom.
valance
Glossary “valance” Definition:
Decorative exterior panel used to fill a gap, or hide other parts.
VAD
Glossary “VAD” Definition:
Vacuum Advance Delay
VAF
Glossary “VAF” Definition:
Vane Air Flow
VAG-COM
Glossary “VAG-COM” Definition:
A laptop based scantool for Volkswagen and Audi Group vehicles. A ROSS-TECH product downloadable from www.ross-tech.com
vacuum vent valve
Glossary “vacuum vent valve” Definition:
Controls the induction of fresh air into a vacuum system to prevent chemical decay of the vacuum diaphragm that can occur on contact with fuel. The valve should be mounted with ports pointed downward for fuel drainback.
vacuum tank
Glossary “vacuum tank” Definition:
Term used for vacuum canister, vacuum chamber, or vacuum reserve tank.
vacuum tap
Glossary “vacuum tap” Definition:
Point at which a vacuum can be released or measured from an enclosure.
vacuum test
Glossary “vacuum test” Definition:
Test to determine the presence of a vacuum.