Glossary “hardness test” Definition:
Technique used to determine the hardness of a material.
h
hardtop
Glossary “hardtop” Definition:
Two or four door body types, with front and rear seats, generally characterized by the lack of “B” pillars.
hardtop door
Glossary “hardtop door” Definition:
Type of door design where the glass extends up out of the door without a frame around it. The glass itself must seal against the weatherstripping in the door opening.
hardware
Glossary “hardware” Definition:
1). Components that make up a computer system, such as a keyboard, a floppy disk drive, and a visual-display terminal. 2). The nuts, bolts, and accessories required to assemble an add-on component. 3). Clips, springs, cables or retainer used in a brake system.
hardwired
Glossary “hardwired” Definition:
Physical connection of two pieces of electronic equipment by means of a cable.
harmonic
Glossary “harmonic” Definition:
Rhythmic vibration of a moving part or assembly.
hardness
Glossary “hardness” Definition:
Resistance to being dented or penetrated. Hard metals are usually brittle.
hard solder
Glossary “hard solder” Definition:
Any solder requiring more than 1000¡ãF to melt.
hard spots
Glossary “hard spots” Definition:
Areas in the friction surface of a brake drum or rotor that have become harder than the surrounding metal.
hard throttle
Glossary “hard throttle” Definition:
Term used when the accelerator is pressed to the floor.
hardener
Glossary “hardener” Definition:
Chemical component of an epoxy resin that starts a catalytic reaction and causes the mixture to harden.
hard parts
Glossary “hard parts” Definition:
The internal engine parts required to rebuild an engine.
hard pedal
Glossary “hard pedal” Definition:
1). Loss in braking efficiency, so that an excessive amount of pressure is needed to actuate brakes.
hard copy
Glossary “hard copy” Definition:
Printed copy of machine output in readable form, such as reports, listings, or graphic images.
hard edge
Glossary “hard edge” Definition:
A sharp corner where two surfaces meet.
hard face
Glossary “hard face” Definition:
Application of a hard material, such as chrome, to a surface to increase its durability and wear resistance.
hard fault
Glossary “hard fault” Definition:
Fault currently present in the system.
hang on unit
Glossary “hang on unit” Definition:
An under-dash, aftermarket A/C unit. May also refer to other under-dash devices, such as a CB radio.
HAP
Glossary “HAP” Definition:
Hazardous Air Pollutant
hard brazing
Glossary “hard brazing” Definition:
Brazing with materials that melt at temperatures above 900¡ãF.