Glossary “chemical hazards” Definition:
Hazard concerns primarily, cut not exclusively, from solvents, fuels, asbestos, and antifreeze.
c
chemical instability
Glossary “chemical instability” Definition:
Undesired condition that exists when a contaminant causes a fluid, such as refrigerant, to break down into a harmful chemical.
check relay
Glossary “check relay” Definition:
Term often used for check-valve relay or vacuum-check relay.
check valve
Glossary “check valve” Definition:
1). Valve that permits the passage of a gas or fluid in one direction but not in the other. 2). Device located in the liquid line or inlet to the drier of some systems to prevent refrigerant flow in the opposite direction when the unit is turned off. 3). Device that allow vacuum to be maintained in a brake booster after the engine has been shut off.
check valve relay
Glossary “check valve relay” Definition:
Electrical switch to control a solenoid-operated check valve.
checker
Glossary “checker” Definition:
A term often used for checkered flag.
chattering clutch
Glossary “chattering clutch” Definition:
When the clutch pedal shakes as the clutch is being applied from the released position.
cheater slick
Glossary “cheater slick” Definition:
A tire that is constructed of the same sticky rubber as a racing tire, but has a shallow tread cut into it to make it street legal.
check
Glossary “check” Definition:
Verifying that a component, a system, or measurement, complies with specifications.
check ball
Glossary “check ball” Definition:
1). Device that maintains air or fuel pressure at a predetermined level. 2). Device that permits the flow of fluid or vapor in one direction only. 3). Type of hydraulic valve, consisting of a ball, that seals an orifice or passage to prevent flow in one direction.
Check Engine Light (CEL)
Glossary “Check Engine Light (CEL)” Definition:
Dash mount lamp that illuminated when the PCM detects a fault.
ChassisEAR
Glossary “ChassisEAR” Definition:
Trade name of an electronic noise detection device. It consists of an earphone head-set, amplifier, channel selector and six sensors. It is primarily used to detect noise emanating from the engine/chassis components.
chassis ground
Glossary “chassis ground” Definition:
Electrical term; a ground is the desirable or intentional circuit return path. A chassis ground is the desirable return path using the vehicles chassis.
chassis lubrication
Glossary “chassis lubrication” Definition:
1). An element of preventive maintenance. 2). The procedure of applying the correct type and amount of grease to the chassis lubrication points at recommended intervals. 3). Checking, adding or changing of fluids. 4). Miscellaneous services including tire pressure and safety checks.
chassis tuning
Glossary “chassis tuning” Definition:
Adjusting the running-gear geometry of a vehicle to compensate for different road conditions.
chatter
Glossary “chatter” Definition:
Pronounced vibration that occurs only when turning.
chassis dynamometer
Glossary “chassis dynamometer” Definition:
Drive-on device, used to measure net road horsepower and torque, delivered by the drive wheels.
chassis dyno
Glossary “chassis dyno” Definition:
Term often used for chassis dynamometer.
chassis
Glossary “chassis” Definition:
Lower structure of a vehicle to which the body, drivetrain and suspension components are attached.
charging station
Glossary “charging station” Definition:
Unit containing a manifold and gauge set, charging cylinder, vacuum pump, and leak detector used to service air conditioners.