Glossary “hydrochloric acid” Definition:
Corrosive acid produced when water and R-12 are mixed as within an automotive A/C system.
Glossary “hydrochlorofluorocarbon” Definition:
A group of refrigerants that contain the chlorine (CI) atom and the hydrogen (H) atom, which causes the chlorine atom to dissipate mor rapidly in the atmosphere.
Glossary “hydro” Definition:
1). Term used for hydraulics. 2). Term used for hydraulic valve lifter. 3). Short term for hydromatic, a transmission built by General Motors.
Glossary “hydro cam” Definition:
Camshaft especially designed to operate with hydraulic valve lifters.
Glossary “hydro-boost” Definition:
Type of brake power booster that uses hydraulic pressure provided by the power steering pump to reduce pedal effort and provide assist.
Glossary “hydrocarbon (HC)” Definition:
A compound containing hydrogen (H) and carbon (C), such as gasoline.
Glossary “hydrazine” Definition:
Highly explosive jet fuel sometimes used as an additive fuel for drag racing.
Glossary “hydraulic press” Definition:
Piece of shop equipment that develops high forces using a hydraulic cylinder that is mounted to the fixture. Used to press parts on and off.
Glossary “hydraulic pressure” Definition:
Pressure exerted through the medium of a liquid.
Glossary “hydraulic principles” Definition:
Use of a liquid under pressure to transfer force or motion, or to increase an applied force.
Glossary “hydraulic valve lifter” Definition:
Device using oil pressure to adjust its length and maintain zero valve clearance so that the valve noise is at a minimum. Also referred to as hydro.
Glossary “hydraulics” Definition:
1). The study of liquids and their use to transmit force and motion. 2). Hydraulic ram units, installed in a low rider at each suspension point, to lower or raise the ride height. 3). The science or technology of the static or dynamic application of fluids in a closed or confined area. Also referred to as hydro.
Glossary “hydraulic modulator” Definition:
Part of an antilock brake system that controls the application of hydraulic pressure to each wheel during a antilock brake condition.
Glossary “hydraulic fluid reservoir” Definition:
A part of a master cylinder assembly (both brake and clutch, if equipped) that hold reserve hydraulic fluid.
Glossary “hydraulic lever” Definition:
Means to multiply force using additional stages of mechanical leverage.
Glossary “hydraulic lifter” Definition:
Valve lifter located between the camshaft and pushrod that uses internal oil pressure to cause the lifter to expand lengthwise.
Glossary “hydraulic lifter leak down” Definition:
Hydraulic leakage between between the lifter plunger and body. It allows for heat expansion in the valvetrain parts and helps reduce lifter pump-up during valve float.
Glossary “hyd” Definition:
Acronym form of Hydraulic
Glossary “Hydra” Definition:
Glossary “hydraulic” Definition:
Equipment operated by oil under pressure.