Glossary “shear strength” Definition:
A measure of how well a material can withstand forces acting to cut or splice it apart.
shear pin
Glossary “shear pin” Definition:
A pin passing through two or more parts, as in securing a gear on a shaft, designed to break, preventing damage if an overload occurs.
shaved
Glossary “shaved” Definition:
1). A vehicle body with the factory chrome trim removed and the holes filled in and painted. 2). Cylinder head that has been resurfaced.
shaker
Glossary “shaker” Definition:
Hood scoop on some muscle cars that channels directly into the air cleaner.
shakeproof lock washer
Glossary “shakeproof lock washer” Definition:
Washers with teeth or bent lugs that grip both the work and the nut. They are also referred to as teeth lock washers.
shake
Glossary “shake” Definition:
Low frequency vibration usually accompanied by visible movement of components.
shaft seal
Glossary “shaft seal” Definition:
Assembly that prevents vapor, fluid or pressure from escaping around the a rotating shaft.
shaft mounted rocker arms
Glossary “shaft mounted rocker arms” Definition:
Rocker arms that are mounted in a straight row on a shaft.
shadow graph
Glossary “shadow graph” Definition:
A scale using reflected light to indicate a difference in the weight of two parts.
shading coats
Glossary “shading coats” Definition:
Progressive application of paint on the boundary of spot repair areas so that a color difference is not noticeable. Also referred to as blend coats.
shade-tree mechanic
Glossary “shade-tree mechanic” Definition:
1). An amateur mechanic. 2). A mechanic with little or no knowledge of the trade. 3). A rural mechanic that literally works under a shade tree.
shackle bushing
Glossary “shackle bushing” Definition:
Insulated bushings to help prevent the transfer of noise and road shock from the suspension to the chassis and vehicle interior.
shackle
Glossary “shackle” Definition:
Swinging or pivoting support at the rear end of a spring that permits it to vary in length as it deflects.
S/H
Glossary “S/H” Definition:
Seat Heater
SFTRIM
Glossary “SFTRIM” Definition:
Short-Term Fuel Trim
SFT
Glossary “SFT” Definition:
Short-Term Fuel Trim
SFI
Glossary “SFI” Definition:
Sequential Multiport Fuel Injection
SFE
Glossary “SFE” Definition:
Society of Fuse Engineers
severe service
Glossary “severe service” Definition:
Includes trailer towing and stop-and-go city driving in hot weather.
settling
Glossary “settling” Definition:
The gradual sinking of the heavier pigments, binders, and metallic particles that make up a paint material when it is allowed to remain in the liquid state.