Shop Safety
Tools & Equipment
Precision Measurement
Engine Fundamentals
Maintenance & Fluids
100
This document, required by OSHA for every chemical in the shop, lists health risks and first aid procedures.
What is a Safety Data Sheet (SDS)?
100
This tool uses a ratcheting mechanism and is sized by its "drive" (e.g., 1/4", 3/8", 1/2").
What is a socket wrench (or ratchet)?
100
This tool is used to measure the thickness of a gap, such as a spark plug gap or valve clearance.
What is a feeler gauge?
100
These are the four strokes of a standard internal combustion engine in the correct order.
What are Intake, Compression, Power, and Exhaust?
100
This rating on an oil bottle (e.g., 5W-30) describes the oil's resistance to flow.
What is viscosity?
200
When using a floor jack, these must always be placed under the vehicle before crawling underneath.
What are jack stands?
200
To prevent rounding off the corners of a fastener, this type of wrench is preferred over an open-end wrench.
What is a box-end wrench?
200
This precision tool can measure outside diameter, inside diameter, and depth.
What is a dial (or digital) caliper?
200
This component converts the linear (up and down) motion of the pistons into rotary motion.
What is the crankshaft?
200
Most modern engine coolants are a mixture of water and this chemical.
What is ethylene glycol (antifreeze)?
300
This color is used on fire extinguishers and emergency stop buttons to indicate immediate danger or fire equipment.
What is Red?
300
This tool is specifically designed to measure the rotational force applied to a fastener.
What is a torque wrench?
300
A standard micrometer has a thimble that moves this distance with one full revolution.
What is 0.025 inches?
300
This is the ratio of the cylinder volume at Bottom Dead Center (BDC) versus Top Dead Center (TDC).
What is the compression ratio?
300
This color usually identifies Automatic Transmission Fluid (ATF) in most vehicles.
What is Red?
400
This specific type of fire extinguisher is used for flammable liquids like gasoline or oil (Class B fires).
What is a Dry Chemical (or B-rated) extinguisher?
400
These pliers have a movable pivot point, allowing the jaws to open wider for different pipe sizes.
What are slip-joint (or tongue-and-groove) pliers?
400
This gauge is used to measure "runout" on a brake rotor or crankshaft.
What is a dial indicator?
400
This engine component is responsible for opening and closing the intake and exhaust valves.
What is the camshaft?
400
This component in the braking system is "hygroscopic," meaning it actively absorbs moisture from the air.
What is brake fluid?
500
The first thing you should do if a battery explodes and acid splashes in your eyes.
What is flush eyes with water for at least 15 minutes?
500
When using a bench grinder, the tool rest should be adjusted to within this distance from the wheel.
What is 1/8th of an inch (3mm)?
500
If a technician is checking for cylinder taper, they would use this specific measurement tool.
What is a telescoping gauge (or bore gauge)?
500
In a four-stroke engine, the crankshaft must rotate this many times to complete one full power cycle for a single cylinder.
What is two (720 degrees)?
500
This is the specific gravity of pure water, used as a baseline for testing battery electrolyte or coolant.
What is 1.000?