Glossary “triangulation” Definition:
The arrangement of frame members for greater durability and rigidity.
tri-Y header
Glossary “tri-Y header” Definition:
An exhaust manifold setup that pairs cylinders according to their firing order to provide better exhaust scavenging.
tri-power
Glossary “tri-power” Definition:
A triple two-barrel carburetor setup.
tri-coat
Glossary “tri-coat” Definition:
Painting system having three layers of topcoat paint.
Tri-Chevy
Glossary “Tri-Chevy” Definition:
1955, 1956, and 1957 Chevrolets.
tree diagnostics chart
Glossary “tree diagnostics chart” Definition:
Flow chart that suggests logical procedures to follow when troubleshooting a problem.
tree
Glossary “tree” Definition:
Term used for Christmas tree.
treadle
Glossary “treadle” Definition:
A dual, heavy-truck brake valve that: 1). Releases air from the service reservoir to the service lines and brake chambers. 2). Opens ports to service lines to vent air in the primary and secondary systems.
tread wear rating
Glossary “tread wear rating” Definition:
Tire rating indicating the wear capabilities of the tread that allow consumers to compare tire life expectancy.
tread wear indicator
Glossary “tread wear indicator” Definition:
Projections of rubber, 1/16 inch (1.59 mm) high at the bottom of the tread grooves, spaced around the tire to identify a tire worn to the recommended safe limit.
tread rubber
Glossary “tread rubber” Definition:
A blend of up to 30 different synthetic, and eight natural rubbers used in a tire tread.
tread rib
Glossary “tread rib” Definition:
Raised portion of the tire tread between the grooves.
tread groove
Glossary “tread groove” Definition:
Recessed portion of the tire tread between the ribs.
tread distortion
Glossary “tread distortion” Definition:
Tread shape change on certain tires as rotating contact is made with the road surface; less severe in belted tires.
tread depth gauge
Glossary “tread depth gauge” Definition:
Instrument that will quickly measure tire wear at the tread.
tread compound
Glossary “tread compound” Definition:
Blend of synthetic rubber used in the tire tread material.
tread
Glossary “tread” Definition:
That portion of a tire that comes into contact with the surface of the road and is designed to allow the air flow to cool the tire and to channel water during wet weather.
TRD
Glossary “TRD” Definition:
Transmission Range Drive, or Transmission Selector Position Input Status (digital), this will be displayed as a binary number.
TRCTL
Glossary “TRCTL” Definition:
Throttle Return Control Throttle Lever actuator
TRCS
Glossary “TRCS” Definition:
Throttle Return Control Solenoid