Glossary “high tension cables” Definition:
A term used for spark plug wires.

Glossary “high tension wire” Definition:
The wire that transmits high voltage from the coil to the distributor.

Glossary “high voltage cables” Definition:
The secondary cables that carry high voltage from the distributor to the spark plugs.

Glossary “high suction” Definition:
Term used when the low-side pressure of a system is higher than normal due to a malfunction of the system.

Glossary “high swirl combustion (HSC)” Definition:
Ford’s name for a cylinder head and valve design that promotes turbulence in the combustion chamber during the power stroke, contributing to complete and efficient burning of the A/F charge.

Glossary “high swirl port technology” Definition:
Cylinder head design with high-speed air flow to pack more A/F mixture into the combustion chamber.

Glossary “high solids paint” Definition:
The non-liquid contents of paint needed to reduce air pollutions or emissions when painting.

Glossary “high spot” Definition:
Outward curvature of a normally flat or smooth surface.

Glossary “high strength steel (HSS)” Definition:
Sheet metal that is stronger than low-carbon or mild steel because of heat treatment.

Glossary “high side drivers” Definition:
Control of the output device by varying the positive side voltage.

Glossary “high side pressure” Definition:
Term used for discharge pressure.

Glossary “high side service valve” Definition:
Device located on the discharge side of the compressor, permitting the service technician to check the high-side pressures and perform other necessary operations.

Glossary “high pressure relief valve” Definition:
Mechanical device designed so that it releases the extreme high pressures of the system to the atmosphere, used to protect the system from high pressures.

Glossary “high pressure side” Definition:
1). Part of an A/C system, from the compressor outlet to the evaporator inlet, that is under high pressure. 2). Any part of a system, such as fuel injection, that is under high pressure.

Glossary “high pressure switch” Definition:
Electrical switch activated by a predetermined high pressure.

Glossary “high pressure vapor line” Definition:
Line or hose running from the compressor outlet to the condenser inlet.

Glossary “high riser” Definition:
1). The raised cylinder heads of the 427 cid Ford engine of the 60’s. 2). Term given to a manifold that places the carburetor above its original design location.

Glossary “high side” Definition:
Term used for discharge side.

Glossary “high pressure cutoff switch” Definition:
Electrical switch activated by a predetermined high pressure to open a circuit during certain high-pressure periods.

Glossary “high pressure line” Definition:
1). Lines or hoses from the compressor outlet to the metering device inlet of an A/C system. 2). Any line or hose that carries high-pressure liquid or gas, such as a power steering pressure hose.