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abrasion

Glossary “abrasion” Definition:
Rubbing or wearing away of a part.

abrasion resistance

Glossary “abrasion resistance” Definition:
A treatment of a wires insultation covering to have the ability to resist surface wear due to chaffing.

abrasive

Glossary “abrasive” Definition:
Very hard substance used for the removal of material by cutting, grinding, lapping, or polishing of metals.

ABPV

Glossary “ABPV” Definition:
Air By-Pass Valve

ABDC

Glossary “ABDC” Definition:
After Bottom Dead Center

abnormal combustion

Glossary “abnormal combustion” Definition:
Term preignition or detonantion, which can cause spark knock and engine damage.

abnormal operating conditions (AOC)

Glossary “abnormal operating conditions (AOC)” Definition:
Other than normal operating conditions; rain, snow, sleet and ice. Adverse.

abnormal wear

Glossary “abnormal wear” Definition:
The excessive wear on drive or driven member(s) which could be caused by improper tensioning, misalignment, or abrasive materials present.

abnormal wear pattern

Glossary “abnormal wear pattern” Definition:
A visual indication that two or more components; gears, pulleys, (etc) , improperly tensioned or aligned or that abrasive materials are present.