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HAND TOOLS HAND TOOLS

HAND TOOLS - PowerPoint Presentation

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Uploaded On 2017-08-31

HAND TOOLS - PPT Presentation

9 Objectives The student should be able to Describe what tool is the best to use for each job Discuss how to safely use hand tools Explain the difference between the brand name trade name and the proper name for tools ID: 583920

typical figure wrench socket figure typical socket wrench screwdriver head fastener ratchet pliers tools impact tool nut hand drive

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Slide1

HAND TOOLS

9Slide2

Objectives

The student should be able to:

Describe what tool is the best to use for each job.

Discuss how to safely use hand tools.

Explain the difference between the brand name (trade name) and the proper name for tools.

Explain how to maintain hand tools. Slide3

Wrenches

Most used hand tool by service technicians

Most are constructed of forged alloy steel

Available in fractional and metric sizesSlide4

Figure 9-4

The end of a box-end wrench is angled 15 degrees to allow clearance for nearby objects or other fasteners.Slide5

Figure 9-7

The end of a typical line wrench, which shows that it is capable of grasping most of the head of the fitting.Slide6

Figure 9-3

A typical box-end wrench is able to grip the bolt or nut at points completely around the fastener. Each end is a different size.Slide7

Figure 9-8

A typical ratchet used to rotate a socket. A ratchet makes a ratcheting noise when it is being rotated in the opposite direction from loosening or tightening.

A knob or lever on the ratchet allows the user to switch directions.

¼”, 3/8”, ½”Slide8

TECH TIP

Clockwise to Tighten Counter to loosen

It is sometimes confusing which way to rotate a wrench or screwdriver, especially when the head of the fastener is pointing away from you. To help visualize while looking at the fastener, say “righty

tighty

, lefty

loosey

.”

BACK TO

PRESENTATIONSlide9

Figure 9-10

The most commonly used socket drive sizes include 1/4 in., 3/8 in., and 1/2 in. drive.Slide10

Figure 9-11

A 6-point socket fits the head of the bolt or nut on all sides. A 12-point socket can round off the head of a bolt or nut if a lot of force is applied.Slide11

Figure 9-16

Deep sockets allow access to the nut that has a stud plus other locations needing great depth, such as spark plugs.Slide12

Figure 10-6

A black impact socket. Always use impact-type sockets whenever using an impact wrench to avoid the possibility of shattering the socket, which can cause personal injury.Slide13

Figure 9-9

A typical flex handle used to rotate a socket, also called a breaker bar because it usually has a longer handle than a ratchet and, therefore, can be used to apply more torque to a fastener than a ratchet.Slide14

Ratchets, Sockets, and Extensions

Torque Wrenches

Two basic types:

Clicker-type

Beam- or dial-type Slide15

Figure 10-3

A typical 1/2 in. drive impact wrenchSlide16

Figure 9-17

A flat-tip (straight blade) screwdriver. The width of the blade should match the width of the slot in the fastener being loosened or tightened.Slide17

Figure 9-18

Two stubby screwdrivers that are used to access screws that have limited space above. A straight blade is on top and a #2 Phillips screwdriver is on the bottom.Slide18

Figure 9-20

An impact screwdriver used to remove slotted or Phillips head fasteners that cannot be broken loose using a standard screwdriver.Slide19

Figure 9-21

A typical ball-peen hammer.Slide20

Figure 9-22

A rubber mallet used to deliver a force to an object without harming the surface.Slide21

Figure 9-24

Typical slip-joint pliers, which are also common household pliers. The slip joint allows the jaws to be opened to two different settings.Slide22

Figure 9-28

Needle-nose pliers are used where there is limited access to a wire or pin that needs to be installed or removed.Slide23

Figure 9-27

Diagonal-cut pliers are another common tool that has many names.Slide24

Figure 9-29

Locking pliers are best known by their trade name Vise-Grip

®

.Slide25

Figure 9-42

A typical beginning technician tool set that includes the basic tools to get started.Slide26

Figure 10-9

A fluorescent trouble light operates cooler and is safer to use in the shop because it is protected against accidental breakage where gasoline or other flammable liquids would happen to come in contact with the light.