FAT3 Glossary

A type of battery charger that charges batteries quickly.

Devices that securely hold items together, such as screws, cotter pins, rivets, and bolts.

The maximum stress a fastener can withstand for a specified number of repeated cycles before failing.

Tire tread wear with a sawtooth pattern. It is caused by incorrect toe. If the tire’s sharp edge is toward the outside of the treads, then the tire is toed out. If there are sharp edges toward the inside of the treads, then the tire is toed in.

A voltage signal sent back to an electronic control unit. It is how the control module is able to interpret temperature or other information from its sensors.

A system that uses feedback to adjust what it is doing. Typically, a module gives a command and waits to see if the command was followed by use of a sensor.

Flat metal strips used to measure the width of gaps, such as the clearance between valves and rocker arms; also called feeler blades.

Fine glass fibers through which light is transmitted.

Usually, a threaded plug that can be removed to allow the level of a fluid to be checked and filled. This could also be a rubber snap-fit plug.

The radius portion of an inside corner that reduces stress at the corner.