Glossary “ACL” Definition:
Acronym for Automatic Chassis Lubrication, or Automatic Level Control (GM)
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ACM
Glossary “ACM” Definition:
Acronym for Air-Control Module, or Asbestos Containing Material
ACON
Glossary “ACON” Definition:
Air Conditioning On
acorn nut
Glossary “acorn nut” Definition:
Nut closed on one end for appearance and to keep water and debris off of the threads.
ACOV
Glossary “ACOV” Definition:
Air Cut Off Valve
acid rain
Glossary “acid rain” Definition:
Corrosive rain formed when sulfur (S) emissions from motor vehicles and industrial plants combine with hydrogen (H) and oxygen (O) in the atmosphere to form sulfuric acid. The mixture of these chemicals with water produces an acid solution that is found in rain. Not only is it corrosive to anything it may come into contact with, it also raises the acidity of lakes and ponds, often to the point that fish and other aquatic life cannot survive.
acidity
Glossary “acidity” Definition:
The presence of acid-type chemicals that are identified by the acid number. Acidity within some environments, such as the crankcase of an engine, causes corrosion, sludge and varnish to increase. Also effects cooling systems.
Acherman angle
Glossary “Acherman angle” Definition:
The tires toe out during a turn because the steering arms are designed with at an angle. Also called turning radius or toe out on turns.
acetylene
Glossary “acetylene” Definition:
A highly flammable gas used for metal cutting, welding, and brazing.
acetylene pressure
Glossary “acetylene pressure” Definition:
Pressure leaving acetylene pressure regulator of oxyacetylene welding outfit. Typically ranges from 1 to 12 psi.
ACGIH
Glossary “ACGIH” Definition:
American Conference of Governmental Industrial Hygienists. ACGIH recommends occupational exposer limits for numberous toxic substances, and it updates and revises its recommendations as more information becomes available.
acid
Glossary “acid” Definition:
Solutions that are below 7 on the pH scale are acidic. A 1 pH rating would be a very strong acid.
acid core solder
Glossary “acid core solder” Definition:
Used for ding non-electrical repairs, such as on radiators.
acid dip
Glossary “acid dip” Definition:
1). Method of paint stripping. Metal parts can be immersed in an acid dip to remove all traces of old paint and chemical impurities. 2). To immerse body panels in acid to reduce sheet metal thickness by etching, thus reducing the overall weight.
ACET
Glossary “ACET” Definition:
Air Conditioning Evaporator Temperature
ACEM
Glossary “ACEM” Definition:
Acronym for Airbag Electronic Control Module (Chrysler)
acetic acid
Glossary “acetic acid” Definition:
Activator, used in RTV/silicone sealants to make them more rubber-like in composition.
acetone
Glossary “acetone” Definition:
1). A highly flammable liquid sometimes used as a racing-fuel additive. CH?COCH? helps prevent other chemicals in a fuel mixture from separating. 2). A powerful ketone-type lacquer solvent. 3). Used as a solvent to clean parts.
accumulator-drier
Glossary “accumulator-drier” Definition:
A term often used for accumulator-dehydrator.
accuracy
Glossary “accuracy” Definition:
Comparison of an indicated value, to a value accepted as a standard.