Automotive Glossary


Automotive Glossary

Browse the glossary using this index

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B

Backfire

Combustion of fuel in the intake or exhaust resulting in a loud explosive noise.

Backing

The base material of flatting paper onto which abrasive grains are coated. For masking tape, the backing is the paper section without the adhesive.

Backing Pad

A supporting pad for abrasive disc and/or polishing pads that is attached to a polishing mop or a DA sander. In the compounding, glazing or polishing operation, a foam or wool polishing or glazing pad is attached on top of the backup pad. In dry sanding operations an abrasive disc is attached to the face of the pad.

Backlash

The clearance between two components, usually used to measure the running clearance of gear teeth.

Backup

A second copy of work in case the original is damaged or destroyed. Should be stored away from the computer.

Baffle

A part fitted behind the air cap in a spray gun to direct the air stream and reduce air turbulence.

Baking

Application of heat to cure and dry a coating. In automotive refinishing, baking is used to speed up the drying of air-drying finishes and is sometimes called force-drying. The metal temperature in refinish baking usually does not exceed 80°C (180°F).

Balance Shaft

A rotating shaft geared to another shaft, usually the crankshaft that carries counterbalance weights to bring the shafts into harmonic balance.

Balance Valve

A hydraulic device that controls the pressure in different parts of a hydraulic circuit. Used to balance front and rear brake actuation.

Balance Weights

Small weights used to balance a shaft or a wheel.


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