FAT3 Glossary

Memory that is retained by the powertrain control module when the key is off.

A groove machined into the top of the valve stem near the tip of the valve that is used to lock in the valve keepers to help retain the valve spring onto the valve assembly.

The washer that fits between the adjusting nut and the locknut. The face of the washer is drilled with a series of holes that mate to a short pin from the adjusting nut, locking it to the spindle.

The washer that fits between the adjusting nut and the wheel bearing and that has the center hole keyed to fit a slot on the spindle or axle tube.

A type of spool valve that is connected to the throttle on the vehicle. The valve is used to force a downshift when the throttle is opened all the way, assuming that the governor pressure is below a specified point; also called detent valves.

1000 watts of power expended over one hour of time.

The energy of an object in motion; it doubles with weight and increases by the square of the speed.

The friction between two surfaces that are sliding against each other.

An electrical law stating that the sum of the current flowing into a junction is the same as the current flowing out of the junction.

A noise heard when the air-fuel mixture spontaneously ignites before the spark plug is fired at the optimum ignition moment.