Australian Automotive Glossary

The ratio of a system’s output magnitude to its input magnitude....

Term used to describe damage to a bearing....

A specially zinc-coated steel used on many panels of a vehicle to help prevent rust and corrosion...

Basic electrical measuring instrument consisting of a magnet and a coil...

Space between two electrodes or contact-breaker points, air gap, spark plug gap...

A nitrogen gas chamber is used to pressurize the shock absorber in place of the traditional air/oil combination. Gas filled shock absorbers provide more stable damping in a variety of conditions and thus improves ride and road contact....

Any thin, soft material installed between two metal surfaces to create a seal. May be copper, cork, rubber or paper....

Wheel-shaped parts with teeth cut into the edge. When one gear engages another, the second gear drives the other to transmit power....

A heavy oil, rated at 80 to 100 weight viscosity that is used in enclosed units containing gears. Gear oil rarely needs changing...

The number of revolutions a driving (pinion) gear requires to turn a driven (ring) gear through one complete revolution. For a pair of gears, the ratio is found by dividing the number of teeth on the driven gear by the number of teeth on the driving pinion gear....