Glossary “OSHA” Definition:
Occupational Safety and Health Administration. A division of the U.S. Department of Labor that establishes and enforces workplace safety regulations.
o
OSAC
Glossary “OSAC” Definition:
Orifice Spark Advance Control.
OSAC Valve
Glossary “OSAC Valve” Definition:
Orifice Spark Advance Control Valve.
OSC
Glossary “OSC” Definition:
Output State Check
oscillating
Glossary “oscillating” Definition:
A device moving back and forth or to and fro, like a clock pendulum.
oscillation
Glossary “oscillation” Definition:
The rotational movement, either in a fore and aft or side-to-side direction around a pivot point, such as in a fifth wheel design in which such articulation is permitted.
O-ring
Glossary “O-ring” Definition:
A round ring having a square or round cross section used as a seal, such as at the end of a hydraulic line.
ORV
Glossary “ORV” Definition:
Off-Road Vehicle.
ORVR-CV
Glossary “ORVR-CV” Definition:
Onboard Refueling Vapor Recovery – Control Valve
O/S
Glossary “O/S” Definition:
Oversize
orna
Glossary “orna” Definition:
Acronym form of Ornament
ORM
Glossary “ORM” Definition:
Other Regulated Materials. A material which poses a risk in transportation, but does not meet the definations of any other hazardous classes.
orifice tube
Glossary “orifice tube” Definition:
Term used for expansion tube or fixed-orifice tube.
origin
Glossary “origin” Definition:
Component, or part that first initiates a vibration.
originator
Glossary “originator” Definition:
See origin.
organic brake lining
Glossary “organic brake lining” Definition:
Brake linings that are made of a carbon-based compound combined with non-organic magnesium silicate and/or glass and synthetic fibers, replacing asbestos which as been determined to be hazardous to health and the environment.
organic friction material
Glossary “organic friction material” Definition:
A friction material having organic binders substantially formulated with nonmetallic fibers. Used with both breaks and clutches.
orifice
Glossary “orifice” Definition:
1.A small hole or opening of calibrated dimensions for metering fluids or gases in exact proportions 2. A small opening or restriction, in a line or passage, that is used to regulate pressure and flow.
Orifice Spark Advance Control (OSAC)
Glossary “Orifice Spark Advance Control (OSAC)” Definition:
A Chrysler emissions control system which slows vacuum advance of ignition timing by means of an orifice in a component mounted on the air cleaner.
Orifice Spark Advance Control Valve (OSAC Valve)
Glossary “Orifice Spark Advance Control Valve (OSAC Valve)” Definition:
A device used on some older Chrysler engines to limit oxides of nitrogen formation by delaying the vacuum signal to the distributor advance during idle and part-throttle operation.