Glossary “manufacturing” Definition:
Planning, designing, managing, and scheduling people, goods, material, equipment, and machinery to produce a useable and sellable product.
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manufacturer's service manual
Glossary “manufacturer’s service manual” Definition:
A book containing service information and technical data that is provided by the vehicle manufacturer.
manufactures's instructions
Glossary “manufactures’s instructions” Definition:
Very detailed procedures for the specific product, part, or component.
Manufacturers of Emission Controls Association (MECA)
Glossary “Manufacturers of Emission Controls Association (MECA)” Definition:
A trade association of the manufacturers of emission-control systems and components.
manual operation
Glossary “manual operation” Definition:
1). The act of operating the power steering system in the event of an engine system failure; increased effort is required. 2). The ability to override or cancel any automatic or semi-automatic function.
manual selection
Glossary “manual selection” Definition:
The operator’s ability to: 1). Move the gear selector lever by hand, such as with a manual transmission. 2). Select any condition or function using a keypad, switch or lever.
manual transmission
Glossary “manual transmission” Definition:
A manually shifted gearing device in the power train that allows variation on the relationship between engine speed and road speed.
manual valve
Glossary “manual valve” Definition:
Located in the valve body, this valve permits the driver to select whichever driving range is desired by moving the selector lever.
manufacturer
Glossary “manufacturer” Definition:
A person, or corporation engaged in the mass production or assembly of vehicles or any other product.
manufacturer's code
Glossary “manufacturer’s code” Definition:
1). An alpha-numeric code to identify a product. 2). A lettered marking code on tire sidewalls indicating tire manufacturer, plant, tire size, type of construction, and date of manufacture.
manual control valve
Glossary “manual control valve” Definition:
A spool valve, located in the valve body, that determines fluid flow from the valve body to various hydraulic circuits controlled by the vehicle driver through the selector lever.
manual estimating
Glossary “manual estimating” Definition:
Preparing a written estimate using crash estimating books and collision damage guides.
manual low
Glossary “manual low” Definition:
The position of the units in an automatic transmission when the driver selects the Low or first-gear position of the quadrant.
manifold vacuum
Glossary “manifold vacuum” Definition:
The negative pressure in an engine’s intake manifold produce by the engine’s pumping action and measured in inches of mercury.
manomometer (u-tube)
Glossary “manomometer (u-tube)” Definition:
A u-shaped tube with a graduated scale used for measuring the pressure of gases or vapors.
manual bleeding
Glossary “manual bleeding” Definition:
A two-technician technique for bleeding brakes; one pumps the brakes as the other opens and closes the bleeder screws when required.
manifold skin temperature sensor
Glossary “manifold skin temperature sensor” Definition:
Located on the outside surface of the intake manifold, its signal data is send to the compuvalve for A/F density calculations on bi-fuel vehicles.
manifold control valve
Glossary “manifold control valve” Definition:
Thermostatically controlled valve in the exhaust manifold for varying heat to the intake manifold with respect to the engine temperature.
manifold gauge set
Glossary “manifold gauge set” Definition:
1). A set of gauges used to service an A/C system. 2). A set of gauges used to measure vacuum or pressure in an engine’s intake or exhaust system.
manifold heat control
Glossary “manifold heat control” Definition:
A flapper-type valve in the exhaust manifold that diverts heat to the intake manifold, to aid in engine warm-up.