ELECTRONICALLY CONTROLLED TRANSMISSION:> Describes a transmission that relies on sensors, an electronic control unit (ECU), and solenoids to control torque convertor lockup and shift points.
FINAL DRIVE GEAR: Describes the last gear in a drivetrain before the driven wheels.
FINAL DRIVE RATIO: The ratio that subscribes the difference between the number of times the driveshaft must turn before the axle shaft turns once. In a final drive ratio of 3.55:1, for example, the driveshaft must turn 3.55 times before the axle will turn once.
FIRST GEAR: Describes the lowest gear in a transmission.
FIVE-SPEED TRANSMISSION: Describes a manual transmission that has five forward gears, with the fifth gear being a form of overdrive allowing the wheels to turn faster than the engine.
FLOOR SHIFT: Describes the shifting lever placed in a vehicle, usually occupying one of three primary positions: on the centre column between the driver and front seat passenger, the steering column or the dashboard.
FOURTH GEAR: Describes the highest gear in a four-speed transmission or the second highest in a five-speed transmission.
GATE: Describes the slotted guide for the gearshift of an internal combustion engine.
GEAR: Describes the wheel-like part with teeth cut into the rim so that when one gear meshes with another gear, it causes the second gear to drive the other and, in this way, transmits power.
GEARBOX: Describes the device consisting of an input shaft, a system of gears, and an output shaft that multiplies engine torque. A manual transmission consists of a clutch assembly plus a gearbox while automatic transmission generally consists of a torque converter plus gearbox.
GEARBOX INPUT SHAFT: Describes the shaft that transmits power from the clutch to the gearbox
GEARBOX OUTPUT SHAFT: Describes the shaft that transmits the drive out of the gearbox
GEARCHANGE CABLES: Describes the shifting cables used to operate gears in some transmissions. Rods and joints are more commonly used because cables tend to stretch.
GEARCHANGE LINKAGE: Describes a system of rods and joints used to operate the gearbox.
GEAR GREASE: Describes the heavy liquid grease used to fill the differential and manual transmission to lubricate the gears.
GEAR INDICATOR: Describes the display that shows the particular transmission gear selected.
GEARING: Describes the ratio between the drive gear and the driven gear.
GEAR LEVER: Describes the device either attached to the side of a steering column or the centre console which allows the driver to change gears .
GEAR OIL: Describes the heavy oil (between 80 to 100 weight viscosity) used in enclosed units containing gears that rarely needs changing.
GEAR PULLER: Describes a tool with two or more jaws and pressure screw for pulling off gears, bearings and pulleys.
GEAR PUMP: Describes the simplest type of oil pump with two gear wheels.
GEAR RANGE: Describes the choice of gears in an automatic transmission. The typical gear ranges are: P - Parking, R - Reverse, N - Neutral, D -Drive, L – Low.
GEAR RATIO: Describes the relationship between the number of turns made by a driving gear to complete one full turn of the driven gear. If the driving gear turns four times to turn the driven gear once, the gear ratio would be 4 to 1
GEAR SELECTOR: Describes the device used to select the desired transmission gear.
GEAR SELECTOR INDICATOR: Describes an indicator positioned either in the instrument cluster or on the centre console shift gate that indicates which gear has been selected in an automatic transmission
GEARSET: Describes a group of two or more gears used to transmit power.
GEARSTICK: Describes a device that allows the operator to move the transmission gears into various configurations.

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