Power Tools and Equipment Chapter 4
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Questions and Answers

What is an air compressor?

It is a source of compressed air for an automotive service facility.

What is the usual air pressure in shops' compressed air systems?

100-150 PSI

Define quick disconnect couplings.

Used to connect air hoses and air tools to the compressed air system without using a wrench.

A(n) _____ is used to set a specific pressure in the compressed air system.

<p>Electric motor</p> Signup and view all the answers

Air tools are also referred to as _____ tools.

<p>Pneumatic</p> Signup and view all the answers

Why should you always lubricate an air tool before operation?

<p>To remove water and you won't damage it.</p> Signup and view all the answers

Air wrenches provide a very fast means of installing or removing _____

<p>Nuts and bolts</p> Signup and view all the answers

A(n) _____ or _____ on the impact wrench controls the direction of rotation.

<p>Button, Switch</p> Signup and view all the answers

Why should you be careful when loosening or tightening fasteners with an air wrench?

<p>So you can't strip or break them.</p> Signup and view all the answers

What is an air ratchet?

<p>A special air wrench designed to quickly remove fasteners.</p> Signup and view all the answers

An air ratchet normally has a drive size of _____

<p>3/8</p> Signup and view all the answers

Describe the difference between an impact socket and a conventional socket:

<p>Impact Socket = A case hardened steel and it's thicker &amp; much stronger Conventional Socket = Can be easily broken or damaged by the hammering blows of an impact wrench</p> Signup and view all the answers

Why shouldn't an impact wrench be used in place of a torque wrench?

<p>An impact wrench will not torque critical fasteners to their correct specification.</p> Signup and view all the answers

For what purpose(s) is an air hammer used?

<p>For driving and cutting operations.</p> Signup and view all the answers

Never turn an air hammer on unless the tool is pressed tightly against the _____

<p>Workpiece</p> Signup and view all the answers

For what purpose(s) is an air powered blowgun used?

<p>Used to dry and clean parts washed in solvent.</p> Signup and view all the answers

What is the application of a solvent gun?

<p>To wash parts that will not fit into a cleaning tank.</p> Signup and view all the answers

Why is an air drill excellent for many repair jobs?

<p>Its power output adjustment capabilities.</p> Signup and view all the answers

A(n) _____ is used in an air or electric drill and can quickly remove old gasket material, carbon deposits, and rust with a minimum amount of effort.

<p>Rotary brush</p> Signup and view all the answers

A(n) _____ pad is another type of cleaning tool that can be used in an air drill.

<p>Abrasive</p> Signup and view all the answers

To be safe, you should always adjust an air drill to the _____ speed when using a rotary brush.

<p>Slowest</p> Signup and view all the answers

Bench grinders can be used for _____ operations.

<p>Grinding, polishing operations, cleaning.</p> Signup and view all the answers

A bench grinder usually has _____ wheel(s).

<p>2</p> Signup and view all the answers

List four safety rules when using a bench grinder.

<p>Wear eye protection, use shields, adjust tool rest, do not use wire wheel on soft metal parts.</p> Signup and view all the answers

Drills use drill bits, or _____, to drill holes in metal and plastic parts.

<p>Twist drills</p> Signup and view all the answers

A drill bit is mounted in a _____

<p>Chuck</p> Signup and view all the answers

A special key called a _____ is used to tighten the drill bit in the drill.

<p>Chuck</p> Signup and view all the answers

What are drill bits normally made of?

<p>Carbon steel or high-speed steel.</p> Signup and view all the answers

The size of a drill's capacity is determined by its _____

<p>Chuck.</p> Signup and view all the answers

What is a drill press?

<p>A large floor or bench-mounted drill.</p> Signup and view all the answers

What rules should be followed when using a drill press?

<p>Remove key from chuck before turning on press, secure part to be drilled with C-clamps or other holding factors, use center punch, release pressure before bit breaks through part, oil bit as needed.</p> Signup and view all the answers

Hydraulic tools are powered by _____

<p>Pressurized liquid.</p> Signup and view all the answers

Where can you place a floor jack without causing vehicle damage?

<p>Under a solid part of the car.</p> Signup and view all the answers

_____ are designed to hold transmissions during removal or installation.

<p>Transmission jacks.</p> Signup and view all the answers

Besides removing and installing engines, what are other possible applications of a portable engine crane?

<p>Hydraulic hand jack for raising engines and pressure raise valve.</p> Signup and view all the answers

A(n) _____ is used to install or remove gears, pulleys, bearings, seals, and other parts requiring a high pushing force.

<p>Pullers.</p> Signup and view all the answers

An amor press works like a(n) _____, however it is all _____

<p>Hydraulic press, mechanical.</p> Signup and view all the answers

It is not safe to work under a vehicle held up by only a jack. The vehicle must be stopped on _____ during repairs.

<p>Jack stands.</p> Signup and view all the answers

A(n) _____ is used to hold an engine once it is removed from the vehicle for rebuilding or repair.

<p>Engine stand.</p> Signup and view all the answers

What is the purpose of a cold solvent?

<p>To remove grease and oil from parts.</p> Signup and view all the answers

A(n) ________ is used to remove heavy deposits of dirt, grease, and oil from the outside of large assemblies such as engines, transmissions, and transaxles.

<p>High pressure washer = Utilized for thorough cleaning Steam cleaner = Effective in breaking down greasy residues</p> Signup and view all the answers

A(n) _____ can be used to join wires.

<p>Oxyacetylene torch.</p> Signup and view all the answers

Why should you always connect the battery before turning on the charger?

<p>The gases around the top of a battery can explode.</p> Signup and view all the answers

A(n) _____ provides a portable source of light when working on a vehicle.

<p>Droplight.</p> Signup and view all the answers

_____ are used to start a vehicle that has a dead battery.

<p>Battery chargers.</p> Signup and view all the answers

A(n) _____ lets the technician easily roll under vehicles without getting dirty.

<p>Creepers.</p> Signup and view all the answers

Describe the function of a roll-around can.

<p>Carries various tools equipment to job area allows needed tools to be within reach saves time and effort.</p> Signup and view all the answers

_____ are placed over fenders, upper grille, or other body sections to protect the paint or finish from nicks, scratches, and grease.

<p>Seat covers.</p> Signup and view all the answers

Study Notes

Air Compressor and Tools

  • An air compressor provides compressed air for automotive service facilities.
  • Typical air pressure in shop compressed air systems ranges from 100-150 PSI.
  • Quick disconnect couplings allow air hoses and tools to connect without a wrench.
  • An electric motor is used to set a specific pressure in the compressed air system.
  • Air tools are often referred to as pneumatic tools.
  • Lubricating air tools before use helps remove water and prevent damage.

Air Wrenches

  • Air wrenches efficiently install or remove nuts and bolts.
  • Direction of rotation on an impact wrench is controlled by a button or switch.
  • Care is essential when loosening or tightening fasteners with an air wrench to avoid stripping or breaking them.
  • An air ratchet is a specialized air wrench for quick fastener removal, typically equipped with a 3/8 inch drive.

Sockets and Torque

  • Impact sockets are made from case-hardened steel, thicker and stronger than conventional sockets, which can break easily from impact.
  • Impact wrenches should not replace torque wrenches as they may not apply the correct torque specifications.

Air Hammer and Blowgun

  • Air hammers are used for driving and cutting operations.
  • Always press an air hammer tightly against the workpiece before turning it on.
  • Air-powered blowguns are utilized for drying and cleaning parts washed in solvents.

Drilling and Grinding Tools

  • Air drills are highly advantageous for repair tasks due to their power output adjustment options.
  • Rotary brushes help remove gasket material, carbon deposits, and rust easily.
  • Abrasive pads can also be used with air drills.
  • Bench grinders are used for grinding, polishing, and cleaning operations and typically have two wheels.
  • Key safety rules for bench grinders include wearing eye protection and using shields.

Drill Press and Bits

  • Drill bits, often called twist drills, are used for creating holes in metal and plastic.
  • Bits are tightened in the drill's chuck, using a special key.
  • Drill bits are usually made of carbon steel or high-speed steel.
  • A drill press is a large, bench-mounted or floor-mounted drill requiring specific safety protocols.

Hydraulic Tools

  • Hydraulic tools operate with pressurized liquid.
  • A floor jack should be placed under a solid part of the car to avoid damage.
  • A transmission jack is specifically designed to hold transmissions during installation or removal.
  • Portable engine cranes raise and assist with engine removal and installation.

Presses and Stands

  • Pullers install or remove high-force parts like gears and bearings.
  • A hydraulic press operates similarly to a mechanical press but uses hydraulic power.
  • Never work under a vehicle supported only by a jack; always use a jack stand for safety.
  • An engine stand secures an engine for rebuilding or repairs.

Cleaning and Maintenance Tools

  • Cold solvent is used to remove grease and oil from parts.
  • High-pressure washers and steam cleaners are effective for cleaning large assemblies, such as engines.
  • An oxyacetylene torch joins wires effectively.
  • Connect the battery before powering on the charger to prevent battery gas explosions.
  • A droplight offers portable lighting for working on vehicles.

Additional Tools

  • Battery chargers are vital for starting vehicles with dead batteries.
  • Creepers allow technicians to comfortably roll under vehicles without dirt.
  • Roll-around cans hold various tools and equipment, providing easy access to enhance efficiency.
  • Seat covers protect vehicle surfaces from scratches and grease during maintenance.

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Description

Test your knowledge on power tools and equipment with this quiz focused on Chapter 4. Learn about air compressors, air pressure standards, and quick disconnect couplings in automotive service facilities. Perfect for those studying engineering or automotive technology.

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