hand tools power tools shop equipment measurement
TRANSCRIPT
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