A group of related parts and assemblies that performs a specific function

The source of compressed air for an auto shop

This measuring system originated from sizes taken from parts of the human body

A metal rod with external threads on one end and a head on the other

Shows where various parts are located on a vehicle

These keep engine valves closed when they do not need to be open

Type of hammer that has a flat face for general striking and a round end for shaping metal parts, such as sheet metal or rivet heads

Measured in either Fahrenheit or Celcius

Has internal threads and usually a six-sided outer shape

Supplement written information in a service manual by showing installation procedures, exploded or disassembled views of parts, or how a part works

Name of the system that ignites the air-fuel mixture in and engine

Type of wrench with a box-end on one end and an open-end on the other

Information representing maximum wear limits and dimensions provided by auto manufacturers

Takes the place of damaged internal threads and allows the use of the original-size bolt

The amount of time (in months) or the number of miles between recommended service checks or maintenance operations

Round hole machined in the engine block that that guides piston movement

A swivel that enables a socket wrench reach around obstructions

This tool, nicknamed a "mike", is used to make very accurate measurements to 1/10,000th of an inch

A series of slots cut into a shaft and a mating part that allow a gear or collar to slide on a shaft but still not rotate

Drawings that represent how wires, hoses, passages, and parts connect together

Word describing a vehicle's frame and everything mounted to it except the body

Creates a high-power electric arc to melt and fuse metal parts together

A sliding measuring device that can make inside, outside, and depth measurements with considerable accuracy; sometimes has a dial gauge attached

A measurement of the number of threads per inch on U.S. conventional fasteners, or the distance between each thread in millimeters on metric fasteners

Help the technician stay up-to-date with recent technical changes, repair problems, and other service-related information