Glossary “synchronizer” Definition:
Device used in a manual transmission to bring a selected gear up or down to the speed of the main shaft.
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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.
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.
synchromesh
Glossary “synchromesh” Definition:
Manual transmission where the synchronizer is used to bring a selected gear up or down to the speed of the main shaft.
symptom
Glossary “symptom” Definition:
An indication of a malfunction.
sync
Glossary “sync” Definition:
Achieved when the PCM receives a signal from the crankshaft sensor and camshaft sensor indicating they are working and in time.
symmetrical rear leaf spring
Glossary “symmetrical rear leaf spring” Definition:
Term used for rear-leaf spring.
switch
Glossary “switch” Definition:
Electrical device that controls the on and off of a sub-system or system.
switch monitor test
Glossary “switch monitor test” Definition:
Procedure that checks input signals from the engine control system’s individual sensors and switches.
swivel foot
Glossary “swivel foot” Definition:
Valve adjusting screw having a ball that swivels when it contacts the valve stem.
symmetrical
Glossary “symmetrical” Definition:
Corresponding in size, form, and relative position on opposite sides of a line, plane, point, or axis.
symmetrical camshaft lobes
Glossary “symmetrical camshaft lobes” Definition:
Camshaft lobes having identical opening and closing ramps.
swirl
Glossary “swirl” Definition:
Cylinder head design that causes the air/fuel mixture to enter the combustion chamber at a high rate of speed, increasing its atomization.
swirl marks
Glossary “swirl marks” Definition:
Round or curved lines in the paint caused by buffing.
swing attachment
Glossary “swing attachment” Definition:
A leaf-spring shackle.
swing axle
Glossary “swing axle” Definition:
A drive system used with independent rear suspension systems.
swing pedals
Glossary “swing pedals” Definition:
Pedals that are suspended from beneath the dash, such as clutch, brake and accelerator.
sweep speed
Glossary “sweep speed” Definition:
Same as time based.
sweeping
Glossary “sweeping” Definition:
Term used for purge.
swept area
Glossary “swept area” Definition:
Total area of the brake drum or rotor that contacts the friction surface of the brake lining.