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Ch 4 Hand tools

Hand tools

TermDefinition
Lifetime tool guarantee means the tool will be replaced or repaired if it ever fails or breaks.
Body Hammers- are used for striking and exerting an impact on a part. Designed to work with sheet metal. They often have a point on one end and a flat head on the other end
Ball peen hammer has a flat face for string and round peen end for shaping sheet metal.
Brass or Lead hammer will make heavy blows without marring the metal surface. The soft metal head will dent and protect parts.
A plastic hammer is for making light blows where parts can be easily damaged. It is used on delicate parts.
A dead blow hamme r has a metal face filled with lead shot (balls) to prevent rebounding. The metal will not bounce back up after being hit.
A rubber mallet has a solid rubber head that is heavy, it is often used to gently bump sheet metal without damaging the painted finish.
Picking hammers are designed to work with sheet metal. They often have a pointed end.
Bumping hammers are used to bump out large dents. They may have a round or square face.
Finishing hammers are used to achieve the final sheet metal contour. The face on a finishing hammer is smaller.
Shrinking hammers are finishing hammers with a serrated or cross grooved face.
Dolly or dolly block- is used like a small portable anvil. It is held on the backside of a panel being struck by a hammer.
Body spoons are used sometimes like a hammer and at other times like a dolly.
Vise- will secure or hold parts during hammering, cutting, drilling, and pressing. Normally it is bolted to a workbench. Should only ever be tightened by hand!
Vise caps are soft and protect a part from marring. Vise jaws are often knurled and the small teeth will damage parts if they are not covered.
C-clamp is a screw attached to a curved frame. It will hold objects on a work surface or drill press while you are working on them.
Wrenches- are used to loosen or tighten nuts and bolts. Wrench size is the distance across the wrench jaws. The come in two sizes, standard (inches) and metric (millimeters)
A crescent wrench or adjustable wrench has movable jaws to fit different head sizes. It can be used when a correct size wrench is not available.
Open ended wrench has three-sided jaws on both ends, this type of wrench is good if the bolt or nut is not very tight. The open jaws are weak, if a bolt is extremely tight the open-end wrench will bend or flex outward.
A box end wrench has closed ends that surround the bolt or nut head. It is available in 12 point and 6 point types.
A combination wrench has both types of ends- box end and open end.
An Allen wrench is a hex, hexagon, or six-sided wrench. It will install or remove set screws.
A line wrench has a small split in its jaw to fit over lines and tubing. It can be slipped over fuel, brake and power steering lines.
Ratchet or ratcheting wrench, has a small lever that can be moved for either loosening or tightening bolts and nuts.
Sockets- cylinder-shaped, box end wrenches for rapid turning of bolts and nuts.
Swivel sockets have a universal joint between the drive end and socket body.
Impact sockets are thicker and case hardened for use with an air powered impact wrench.
Extensions fit between the socket and its drive handle. They allow you to reach in and install the socket when surrounded by obstructions.
A universal joint allows you to reach around objects with a socket wrench and extension. It will flex, allowing you to rotate the socket from and angle.
A torque wrench is used to measure tightening force.
A breaker bar provides the most powerful way for turning bolts and nuts.
Pry Bars are used to gain leverage for shifting heavy parts. They are hardened steel bars with various end shapes.
A speed handle can be rotated to quickly remove or install loose bolts and nuts.
Screwdrivers- allow you to rotate screws for installation or removal. Each fastener requires a specific type.
A standard screwdriver or flat head screwdriver has an end with a single flat blade for fitting into the slot in the screw.
A Phillips screwdriver has two crossing blades for a star shaped screw head.
Pliers- are used for working with wires, clips and pins. They will grasp and hold parts like fingers. A collision tech should own several types.
Channellock pliers have several jaw settings for grasping different size objects. They will open wider than combination pliers.
Needle nose pliers have long thin jaws for reaching in and grasping small parts.
Vise grips or locking pliers have jaws that lock into position on parts.
Diagonal cutting pliers or side cut pliers have cutting jaws that will slip off wires flush with a surface
A center punch is pointed to start a drilled hole or to mark parts. The indentation will keep a drill bit from wandering out of place.
Chisels are handy for some cutting operations. For example, can be used to shear off rivet heads or separate sheet metal parts.
Sheet metal gauge is used to measure body or repair panel thickness or gauge size.
Tinsnips are the most common metal cutting tool.
Panel cutters will precisely cut sheet metal, leaving a clean, straight edge that can be easily welded.
Created by: abogner105
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