Glossary “LDT” Definition:
Light Duty Truck (Gasoline)
l
LDV
Glossary “LDV” Definition:
Light Duty Vehicles (cars and trucks under 6,000 GVWR)
LCM
Glossary “LCM” Definition:
Lighting Control Module
LCD
Glossary “LCD” Definition:
Liquid Crystal Display.
latitudinal
Glossary “latitudinal” Definition:
From side-to-side
lattice structure
Glossary “lattice structure” Definition:
An orderly arrangment of atoms in a crystalline material.
launch shutter
Glossary “launch shutter” Definition:
Common second order vibration complaint in raised trucks with a high driveline angle.
layout
Glossary “layout” Definition:
Lines scribed on a piece of material or metal as a guide in bending or forming.
LB
Glossary “LB” Definition:
Light Blue
LC50
Glossary “LC50” Definition:
The concentration of a substance in air that causes death in 50% of the animals exposed by inhalation. A measure of acute toxixity.
lateral runout
Glossary “lateral runout” Definition:
1). A tire that has excessive variations in width. 2). The measured amount of sideways wobble on a rotating tire.
lateral weight transfer
Glossary “lateral weight transfer” Definition:
The momentary shift of a vehicle weight from the inside tires to the outside tires, or outside to inside, due to cornering forces.
lathe cut seal
Glossary “lathe cut seal” Definition:
A fixed seal for a caliper piston that has a square or irregular cross section, not round like an O-ring.
latent heat of evaporation
Glossary “latent heat of evaporation” Definition:
Quantity of heat required to change a liquid into a vapor without raising the temperature of the vapor above that of the original liquid. Also known as latent heat of vaporization.
latent heat of fusion
Glossary “latent heat of fusion” Definition:
Amount of heat that must be removed from a liquid to cause it to change to a solid without causing a change of temperature.
latent heat of vaporization
Glossary “latent heat of vaporization” Definition:
Term used for latent heat of evaporation.
lateral
Glossary “lateral” Definition:
Lateral is at 90¡ã to the plane of rotation.
lateral acceleration
Glossary “lateral acceleration” Definition:
The centrifugal force that tends to push a vehicle sideways toward the outside of a turn.
lateral link
Glossary “lateral link” Definition:
Suspension component used to reduce side-to-side movement of a wheel.
lash ramp
Glossary “lash ramp” Definition:
Initial portion of the cam lobe that meets the lifter as the cam rotates off its bace circle. The lash ramp compensates for small defections and begins to take up slack in the valetrain without actually lifting the valve.