- Gear
-
Wheel-like part with teeth cut into the rim. When one gear meshes with another gear, it causes the second gear to drive the other and in this way transmits power. When the gears are different sizes (different number of teeth on each gear) the mechanical average is changed.
Gear
Also see- Annular Gear
- Axle end gears
- Back Gear
- Barring Gear
- Beaching Gear
- Bevel gear
- Bottom gear
- Brush Gear
- Camshaft gear
- Center gear
- Change gear
- Cluster gear
- Constant mesh gears
- Crankshaft gear
- Crawler gear
- Differential gears
- Differential side gear
- Distributor Drive Gear
- Double helical gear
- Drive gear
- Driven gear
- Driving gear
- Economy gear
- EP gear oil
- Epicyclic Gear
- Fifth gear
- Final drive gear
- First gear
- Fixed gear
- Flywheel ring gear
- Fourth gear
- Granny gear
- Helical gear
- Herringbone gears
- High gear
- Hypoid gear
- Hypoid gear oil
- Idler gear
- Intermediate gear
- Internal gear
- Internal gear pump
- Landing Gear
- Left hand gear lever
- Low gear
- Mating gears
- Member of the gear train
- Overall gear ratio
- Passing gear
- Pinion gear
- Planetary gear
- Planetary gear differential
- Planetary gear set
- Planet gears
- Reverse gear
- Reverse idler gear
- Reversible gear puller
- Ring gear
- Running gear
- Second gear
- Shift gear
- Sliding gear
- Spider gear
- Spiral bevel gear
- Spur gear
- Starter ring gear
- Steering gear
- Stepped planet gear
- Straight-cut gear
- Sun gear
- Third gear
- Timing gear
- Top gear
- Valve gear
- Wide-step gearing
- Worm gear
- Gearbox
- The device in the Drivetrain 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; and
Automatic transmission generally
consists of a Torque converter plus
gearbox.
Also see
- Accessory Gearbox
- Automatic gearbox
- Auxiliary gearbox
- Change-speed gearbox
- Close-ratio gearbox
- Constant mesh gearbox
- Cotal gearbox
- Crash gearbox
- Dual-range gearbox
- Epicyclic gearbox
- Four-speed gearbox
- Manual gearbox
- Planetary gearset
- Pre-selector gearbox
- Rack and pinion gearbox
- Reduction gearbox
- Sliding-mesh gearbox
- Steering gearbox
- Wilson gearbox
- Gearchange cables
- British term for Shift cables used to operate gears in some transmissions. In most vehicles rods and joints are used because cables tend to stretch.
- Gearchange linkage
- A system of rods and joints used to operate the gearbox. British term for Shifter linkage
- Gearchange mechanism
- A system of rods and joints used to operate the gearbox. British term for Shifter mechanism
- Geared Speed
- The calculated vehicle speed at the engine's governed rpm in each transmission gear, or (commonly) in top gear.
- Gear grease
- A heavy liquid Grease that fills the Differential and Manual transmission to lubricate the gears. Also called differential grease.
- Gearhead
-
- A person with a strong interest in all things mechanical
- The portion of a gearmotor which contains the actual gearing that converts the basic motor speed to the rated output speed
- Gear indicator
- A display which shows the particular Transmission gear that has been selected.
- Gearing
-
- The combination or system of gears or sprockets designed to transmit power.
- The ratio between the drive gear and the driven gear.
- Gearjammer
- Trucker slang for a speeding trucker as in "We got us a real gearjammer in that eastbound lane."
- Gear knob
- British term for the knob at the end of a lever, i.e., Shifter knob
- Gear lever
- A device which is attached to the side of a steering column or to the center
console which will allow the operator to change the gears of the transmission.
Also called shift lever.
Also see
- Gear oil
- A heavy oil which is rated at 80 to 100 weight
Viscosity used in enclosed units containing
gears. This oil infrequently or rarely needs changing.
Also see
- Gear puller
-
A tool with two or more jaws and pressure screw for pulling off gears, bearings, pulleys, etc.
Gear puller
Also see
- Gear pulser
- A term used by some manufacturers, including Subaru, for the Tone rings
- Gear range
- Choice of gears in an automatic transmission. The typical gear ranges are P - Park, R - Reverse, N - Neutral, D -Drive, L - Low
- Gear ratio
-
- 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. In most instances, the gear ratio is not even like 41 because the same teeth would be meshing with each other. Thus a ratio of 4.111, for instance, means that a particular tooth on one gear may eventually mesh with every one of the teeth on the other gear. Changing the tire size will change the effective gear ratio.
- A number, usually expressed as a decimal fraction, representing how many turns of the input shaft cause exactly one revolution of the output shaft. Applies to transmissions, power takeoffs, power dividers and rear axles. Example If 2.5 revolutions of an input shaft cause one revolution of the output shaft, the gear ratio is 2.51.
Also see
- Gear selector
- The device (e.g., lever or rod or pushbutton) for choosing the
desired automatic Transmission
gear. Located on the side of the steering column, in a console, or
on the floor between the front seats.
Also see
- Gear selector indicator
- An indicator positioned in the instrument cluster or on the center console shift gate indicating which gear has been selected in an automatic transmission
- Gearshift
-
A device which allows the operator to move the Transmission gears into various configurations. Most often the gearshift is located on a lever on the Steering column or on a lever on the floor between the Driver and front passenger. Some older Chryslers had Pushbutton controls on the Dash. On motorcycles, the shift lever is located on the left or right side and operated by the foot.
Gearshift
- Gearshifter
-
A device which allows the operator to move the Transmission gears into various configurations. Most often the gearshift is located on a lever on the Steering column or on a lever on the floor between the Driver and front passenger. Some older Chryslers had Pushbutton controls on the Dash. On motorcycles, the shift lever is located on the left or right side and operated by the foot.
Gearshifter
- Gearslammer
- Trucker slang for a trucker who's known to accelerate and decelerate a lot as in "Better watch out there's a real gearslammer in the granny lane."
- Gearstick
- A British term for the stick used by the driver to change gears. Also called a shifter or shift lever.
- Gear-type oil pump
-
The simplest oil pump with two gear wheels. Compare Rotor-type oil pump.
Gear-type oil pump
- Gel cell battery
- A battery where the acid is in the form of a gel so that in the event of a spill, acid does not leak out -- especially recommended for electric scooters and power chairs
- Gel coat
-
- A thin layer of plastic Resin covering Fiberglass panels.
- An outer layer of GRP (glass reinforced plastic) moldings which gives a smooth surface that may be colored
- Gel-coat resin
- A resin similar to general lay-up resin but with an additive to make it thixotropic, i.e., it does not run down vertical surfaces; used to make the gel coat in moldings
- General Agreement on Tariffs and Trade
- (GATT) Signed in 1947, the GATT was a formal multilateral agreement aimed at expanding and liberalizing world trade. The World Trade Organization which is the successor to the GATT came into existence on January 1, 1995.
- General corrosion
- In contrast to pitting, a type of corrosion which affects the entire surface of a metal
- General Freight cargo
- Processed items, packaged or in some way containerized, and fairly closely packed.
- Generalized Preferential Tariff
- (GPT) system of non-reciprocal tariff preferences for the benefit of developing countries. It grants duty-free or preferential entry to imports for eligible developing countries up to a certain dollar value or import percentage limit.
- General mess of crap
- Trucker slang for GMC trucks by Volvo/White as in "I used to drive a general mess of crap."
- General Motors
-
(GM) or (GMC) The largest American vehicle manufacturer including:
It has subsidiaries and associates in Britain (Vauxhall),
European continent (Opel, Fiat,
and Saab), Australia (Holden), Asia
(Subaru, Fuji, Suzuki)
- General purpose lacquer thinner
- A type of thinner that may be used for both lacquers and synthetic enamels without causing lifting or other paint faults
- Generator
-
- A mechanism which generates or produces some substance, i.e., electric generator, acetylene generator.
- An Electromagnetic device for producing Direct current electricity. It was replaced by an Alternator in the early '60s. Its problem was that a generator Recharged the Battery only at high Speeds. The British call it a dynamo.
- Generator capacity
- The maximum output, commonly expressed in megawatts (MW), that generating equipment can supply to system load, adjusted for ambient conditions.
- Generator nameplate capacity
- The maximum rated output of a generator under specific conditions designated by the manufacturer. Generator nameplate capacity is usually indicated in units of kilovolt-amperes (kVA) and in kilowatts (kW) on a nameplate physically attached to the generator.
- Genset
- Abbreviation for Generator set, a generating system comprising a combustion engine driving an electrical generator.
- Geo
-
A model of automobile manufactured by Suzuki for GM including the following models
Metro (1989-97), Prizm (1989-97), Spectrum (1988-89), Storm (1990-93), Tracker (1989-97)
- Geographic Information System
- (GIS) A system of information, organized in layers that can be applied to a specific geographic location to such things as population density, traffic volume, business development, etc.
- Georges Irat
- A vehicle of which models built between 1925 and 1948 are classic cars
- Georgia overdrive
- Trucker slang for neutral gear as in "You put her in Georgia overdrive on the downstroke."
- Getting out
- Trucker slang for being heard on the CB as in "Can anyone tell me if my CB is getting out?"

