Glossary “display terminal” Definition:
An output device, such as a CRT, that produces a visual representation of graphic data.
d
disposable cylinder
Glossary “disposable cylinder” Definition:
A container for the one-time use of packaging, transporting, and dispensing of a fluid, such as refrigerant. It is a violation of Federal Law to refill these cylinders, commonly referred to as “DOT-39s.”
disposal
Glossary “disposal” Definition:
To get rid of something
dissolve
Glossary “dissolve” Definition:
Cause to pass into solution, separate into component parts.
DIST
Glossary “DIST” Definition:
Distributorless Ignition System Tester
displacement
Glossary “displacement” Definition:
The volume within an engine’s cylinders, expressed in cubic centimeters (cc) or cubic inches (cid).
displacement current
Glossary “displacement current” Definition:
An expression for the effective current flow across a capacitor.
display pattern
Glossary “display pattern” Definition:
Also called parade pattern, it displays all of the cylinders, side-by-side so that the height of the voltage patterns can be compared to one another.
dispersant
Glossary “dispersant” Definition:
Chemical added to oil that prevents impurities from clinging together and forming lumps that could clog the lubrication system galleys.
disengage
Glossary “disengage” Definition:
To disconnect; used to describe the action when a clutch uncouples the power of the driving part from the driven part. May also refer to the disengagement of power to the front axle used in 4 X 4 applications. To unlatch or release.
dished piston
Glossary “dished piston” Definition:
A piston having a depression in the crown.
disk
Glossary “disk” Definition:
1). A magnetic device for storing information and programs accessible by a computer. 2). The rotor, a revolving piece of metal, against which brake pads are applied to provide a braking action. 3). A two-dimensional figure defined by all points enclosed by a circle’s diameter. 4). Often referred to as disc.
disk drive
Glossary “disk drive” Definition:
A device that stores, reads, or retrieves data from a magnetic disk and copies it into the computer’s memory for use.
disk runout
Glossary “disk runout” Definition:
Amount that a brake disk wobbles during rotation.
disk-operating system
Glossary “disk-operating system” Definition:
Operating system in which the programs are stored on magnetic disks that keep track of, save, and retrieve files; allocate storage space and manage other control functions.
discharge valve
Glossary “discharge valve” Definition:
Term used for high-side service valve.
discharging
Glossary “discharging” Definition:
Removal of refrigerant from the air conditioning system.
disconnect
Glossary “disconnect” Definition:
Switching device for disconnecting an electrical circuit or load from the power supply. To disconnect: an electrical connector, fuel or vapor line, or hydraulic line or hose.
Discriminating Sensors
Glossary “Discriminating Sensors” Definition:
Parts of the air bag circuitry that calibrate to close with speed changes that are great enough to warrant air bag deployment. Also referred to a crash sensors.
discharge service valve
Glossary “discharge service valve” Definition:
The high side valve in a A/C system.