Glossary “top U-bolt plate” Definition:
Plate located on the top of the spring and held in place when the U-bolts are tightened, clamping the spring and axle together.
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top end power
Glossary “top end power” Definition:
Engine output at high speed.
top mount battery
Glossary “top mount battery” Definition:
Battery having terminals located at the top of the case.
top gear switch
Glossary “top gear switch” Definition:
Lock-out mechanism which prevents the shift indicator light from illuminating when the vehicle is in top gear.
top inch
Glossary “top inch” Definition:
The first downward inch of a piston stroke where most wear occurs.
top loader
Glossary “top loader” Definition:
A Ford four-speed transmission of the mid 1960s to early 1970s.
top fuel
Glossary “top fuel” Definition:
The hottest category in drag racing having cars capable of a quarter mile in less than five seconds, and a top speed of over 300 mph (482.7 km/h).
top end
Glossary “top end” Definition:
1). High engine rpm; a point that horsepower is the greatest. 2). The far end of a quarter-mile drag strip. 3). Upper portion of an engine.
tooth separation
Glossary “tooth separation” Definition:
A tooth crack.
TOP
Glossary “TOP” Definition:
Transmission Oil Pressure, or Trap Oxidizer – Periodic
top dead center (TDC)
Glossary “top dead center (TDC)” Definition:
The piston position at the top of its stroke.
top eliminator (TE)
Glossary “top eliminator (TE)” Definition:
the overall winner in a series of drag races.
tooling
Glossary “tooling” Definition:
A set of required standard or special tools needed to produce a particular part, including jigs, fixtures, gauges, and cutting tools, but excluding machine tools.
tooth
Glossary “tooth” Definition:
Projection on a gear rim or synchronous belt that meshes or engages with another component.
tooth cracks
Glossary “tooth cracks” Definition:
In asynchronous belt drive, tooth cracks and eventual tooth separation can be caused by under tensioning, over tensioning, or using a backside idler with too small a diameter or as a result of an under-designed belt drive.
tooth form
Glossary “tooth form” Definition:
Shape of the working surface of a sprocket tooth from the bottom of the seating curve up through the working faces to the tip of the tooth.
tonneau cover
Glossary “tonneau cover” Definition:
Term used for tarpaulin or bed cover.
tons rating
Glossary “tons rating” Definition:
How much heat needs to be added in 24 hours to turn 1 ton of ice at 32¡ãF into water.
tone ring
Glossary “tone ring” Definition:
A toothed wheel on a hub or shaft, that changes the magnetic field of the speed sensor, or sensor, in proportion to the wheel or shaft speed. It may also be referred to as a tone wheel, toothed wheel, reluctor, or gear pulser.
tongue weight
Glossary “tongue weight” Definition:
The load applied to the hitch by the trailer tongue, equal to about 10-15 percent of the trailer gross weight.