Glossary “lock nut” Definition:
1). A nut that is designed to lock when tightened or torqued. 2). A second nut that is screwed down tightly against the first nut.
l
lobe
Glossary “lobe” Definition:
That concentric part of a camshaft that causes the vales to open and close by actuating a valve lifter.
lobe centers
Glossary “lobe centers” Definition:
The number of degrees of a camshaft between intake and exhaust lobes.
lobe lift
Glossary “lobe lift” Definition:
The lift provided by the cam lobe. Best measured by a dial indicator.
load test
Glossary “load test” Definition:
1). Starter motor test in which the current draw is measured under normal cranking load. 2). Battery test whereby the battery is loaded for testing.
loaded calipers
Glossary “loaded calipers” Definition:
Rebuilt caliper, complete with new friction pads, hardware and shims.
loaded voltage
Glossary “loaded voltage” Definition:
Voltage of the charging system in operation at 2,500 RPM with all accessories on.
loading
Glossary “loading” Definition:
1). An enrichment of the A/F mixture to the point of rough idling, usually resulting in black smoke from the exhaust. 2). Turn on all components to determine its maximum allowable output.
load proportioning valve (LPV)
Glossary “load proportioning valve (LPV)” Definition:
Device used to distribute hydraulic brake pressure to the front and rear brakes based on the vehicle load.
load range
Glossary “load range” Definition:
1). Term used for load rating. 2). The weight a tire will support at a given inflation pressure.
load rating
Glossary “load rating” Definition:
A term designating the maximum weight that a particular tire is designed to support, usually related to a specific air pressure.
load carrying ball joint
Glossary “load carrying ball joint” Definition:
The lower ball joint on low-mounted coil springs or torsion bars or the upper ball joint on high-mounted, coil-spring suspensions; compression or tension loaded, supporting the weight of the vehicle.
load index
Glossary “load index” Definition:
Maximun load at the designated speed rating.
load leveling shock absorber
Glossary “load leveling shock absorber” Definition:
Inflatable shock absorbers, often used with an electronic height-control system, that are pressurized with air to increase their load-carrying capability.
LMDM
Glossary “LMDM” Definition:
Left Middle Door Module
LML
Glossary “LML” Definition:
Lean Misfire Limit
LNG
Glossary “LNG” Definition:
Liquified Natural Gas.
LOAD
Glossary “LOAD” Definition:
Calculated Engine Load
LOAD_ABS
Glossary “LOAD_ABS” Definition:
Absolute Load Value Displayed in %.
litmus
Glossary “litmus” Definition:
An absorbent paper strip impregnated with purple-colored matter that turns blue if dipped into an alkaline solution and red if dipped into an acid solution.