Hand Tools Power Tools Shop Equipment Measurement

Tools

Use of shop tools is a Privilege not a right

Student are responsible for all toolsTools MUST be cleaned and returned in

the same condition they were checked out

ALWAYS WEAR SAFETY GLASSES

Hand Tools

Wrenches Several types

1. Open end wrench

2. Boxed end wrench

3. Combination wrench

4. Line wrench

5. Adjustable wrench (crescent or monkey)

6. Pipe wrench

7. Allen wrench

8. Ratcheting wrench

9. Ratchet and Sockets

Wrench Precautions

Always use proper type, size, and length

NEVER hammer on a wrenchUse longer wrenchUse a Slug wrench

Always check the condition of the wrench before use

Wrench MeasurementConventional vs. Metric

ConventionalUnit of measurement:

Fractions of an inchExamples: 1/16”, 1/8, ¼,” ½”, 1”, 1½”,

MetricUnit of Measurement:

MillimetersExamples:7mm,10mm, 21mm, 32mm

Most Common Wrench

All available in Conventional or Metric

Open End all sides have an opening

Boxed EndAll sides a closed

CombinationHas both an open and a

boxed end

Line Wrenches

Used specifically for Line Nuts: Any tubes on a

vehicle that carry fluid or gas are referred to as linesFuel lines, brakes

line, Transmission lines, Coolant lines

Allen Wrenches

Uses: Allen Bolts Allen Bolts= Hexagon

Shaped Hole Sizes: Both

Conventional & Standard

Types: 90 degreeFolding SetT-Handle

Adjustable vs. Pipe Wrench

Adjustable/ Crescent Wrench (Monkey)Used by Auto

Techs.Should only be

used when proper size is unavailableUses adjustment

nut to widen or narrow mouth

Pipe WrenchUsed by plumbersShould only be used on

pipes Uses adjustment nut to

widen or narrow mouth

Sockets And Handles

Socket= attachments used in conjunction with various types of handles to adapt to size variations and space limitations.

Handle types Ratchet Speed Handle Breaker Bar Torque Wrench T handles Nut Driver

Sockets

Made to fit various types and Drive sizes of handles

Most common handle sizes¼” drive3/8” drive½” drive¾” drive1” drive

Sockets PointsPoints refer to #

of sides# of sides allows

for ease of rotation in limited space and for specialty heads with various # of sidesCommon # of

points46812

HandlesRatchets

Have ratcheting mechanism inside head to increase speed and ease of removal and installation of nuts and boltsAlso have a

switch to change direction

Speed HandlesShaped like old

cartoon drillsHas a free

spinning knob that allows for speedy rotationRequire 2 hands1 hand hold end1 hand turns

crank

Handles

Breaker BarHandle without

ratchet mech.Used to free

extremely tight nuts and bolts that would cause the ratchet mech. to break

Torque WrenchHandle w/ or

w/out ratchet mech.Used to tighten

nuts and bolt to a specific amount of pressure measured in

Foot poundInch poundKilograms of

ForceNewton meters

Not used for removal

Handles

T-Handle Nut DriverSimilar to

screwdriverDriver handle w/

sockets of various sizes attached to other end

Adapters

ExtensionsAttachment used

to add space between handle and socketAllow access to

recessed bolt hole

Universal JointsUsed to access

hard to reach anglesHas joint that

allows extension to pivot up to 90o