Glossary “rheostat” Definition:
A two- or three-terminal variable resistor used to regulate the voltage of an electrical current.
r
RFG
Glossary “RFG” Definition:
Reformulated Gasoline
RFI
Glossary “RFI” Definition:
1). Radio Frequency Interference, the induction of voltage caused by the release of a magntic field. 2). Narrow band of frequencies within the electromagnetic spectrum. 3). Form of electromagnetic interference created in the ignition secondary circuit or alternator, which disrupts radio and television transmissions
revs
Glossary “revs” Definition:
Term used for rpm.
rework
Glossary “rework” Definition:
To repair or overhaul, again, especially under warranty.
RF
Glossary “RF” Definition:
Radio Frequency
reversed polarity
Glossary “reversed polarity” Definition:
Condition that exists when battery cables are connected to the wrong terminals of a battery.
reversion
Glossary “reversion” Definition:
The interval during valve timing overlap when both intake and exhaust valves are open and a small mist of air/fuel is forced out back through the carburetor.
revolution
Glossary “revolution” Definition:
A 360¡ã movement of a component around its operating axis.
revolutions per minute (rpm)
Glossary “revolutions per minute (rpm)” Definition:
1). The number of times a member, such as a shaft, makes a complete revolution in one minute. 2). The rate of speed of a rotating part, such as a crankshaft.
reverse shoe
Glossary “reverse shoe” Definition:
Term used for trailing shoe.
reverse idler gear
Glossary “reverse idler gear” Definition:
1). Gear in most standard transmissions that must be meshed to obtain reverse, and that idles in all forward gears. 2). Gear that transfers power in reverse only. Rotating on a separate shaft, it reverses the direction of the counter-gear motion.
reverse masking
Glossary “reverse masking” Definition:
A masking method that requires you to fold the masking paper back and over the masking tape.
reverse gear
Glossary “reverse gear” Definition:
Transmission gear arrangement obtained from a planetary gear set when the planet-gear carrier is held and power is applied to the sun gear, the ring gear is driven in a reverse direction.
reverse blocker valve
Glossary “reverse blocker valve” Definition:
Control valve which is controlled by governor or direct drive oil pressure, which prevents reverse range from applying while the vehicle is moving forward.
reverse clutch
Glossary “reverse clutch” Definition:
A multiple-disc clutch that is engagedfor the purpose of producing a reverse gear, but can also be applied to produce other gear combinations in an A/T.
reverse Elliot axle
Glossary “reverse Elliot axle” Definition:
A solid-beam front axle on which the steering knuckles span the axle ends.
reverse flush
Glossary “reverse flush” Definition:
Method of cleaning an engine and/or radiator by flushing in a direction opposite of normal coolant flow, under pressure.
reverse flushing
Glossary “reverse flushing” Definition:
Method used to clean an engine or cooling system by flushing it in the opposite direction of normal coolant flow.
reveal molding
Glossary “reveal molding” Definition:
The metal trim that outlines an opening, depression, or raised area of an auto body.