Glossary “systemic approach” Definition:
An organized and logical sequence of steps to accomplish a task or job.
system status (I/M readiness status )
Glossary “system status (I/M readiness status )” Definition:
Signal or code for emission testing which states that all the vehicle’s on-board emissions diagnostics have been run. System status is not concerned whether the emission system passed or failed the test, only that the test was run.
system protective valves
Glossary “system protective valves” Definition:
Device that is used to protect the brake system against accidental loss of air pressure, buildup of extreme pressure, or backflow and reverse air flow in a truck braking system.
system pressure
Glossary “system pressure” Definition:
Average operating pressure in a system, such as the fuel-injection system.
system pass
Glossary “system pass” Definition:
Indicates that there are no malfunctions of the type that the system can detect and store.
system overcharge
Glossary “system overcharge” Definition:
Term used for an overcharged A/C system.
system dependent recovery system
Glossary “system dependent recovery system” Definition:
Refrigerant recovery system that relies on system components, such as the compressor, to remove the refrigerant from the system.
system
Glossary “system” Definition:
Any set of interacting electrical or mechanical parts that are grouped together to operate as a complete entity.
syringe
Glossary “syringe” Definition:
A tool with a rubber bulb and a tube or a plunger in a tube; used to suck out or force in a liquid
synthetic oil
Glossary “synthetic oil” Definition:
1). Type of engine lubricant consisting of highly polymerized chemicals. 2). A non-mineral based lubricant for use in automotive air conditioners.
synthetic lining
Glossary “synthetic lining” Definition:
Brake friction material made from non-organic, non-metallic, and non-asbestos materials. Typically fiberglass and aramid fibers.
synthetic fuel
Glossary “synthetic fuel” Definition:
Fuel made by liquefying coal or by extracting oil from shale or tar sands.
synfuel
Glossary “synfuel” Definition:
Term used for synthetic fuel.
synchronous fuel timing
Glossary “synchronous fuel timing” Definition:
Fuel injectors firing in direct relationship to ingition reference pulses.
synchronous belt
Glossary “synchronous belt” Definition:
Belt having cogs or teeth that mesh in mating cogs or teeth of a pulley.
synchronous
Glossary “synchronous” Definition:
Condition that exists when two events occur in a specified time relationship with each other, under the control of master timing signals.
synchronizer sleeve
Glossary “synchronizer sleeve” Definition:
Sliding sleeve that fits over the complete synchronizer assembly.
synchronizer hub
Glossary “synchronizer hub” Definition:
Center part of the synchronizer assembly that is splined to the synchronizer sleeve and transmission output shaft.
synchronizer blocker ring
Glossary “synchronizer blocker ring” Definition:
Usually a brass ring that acts as a clutch and causes driving and driven units to turn at the same speed before final engagement.
synchronizer assembly
Glossary “synchronizer assembly” Definition:
Device that uses cone clutches to bring two parts rotating at two speeds to the same speed. Operates between two gears.