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Chapter 3

Chapter 3. Hand Tools. Tools.

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Chapter 3

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  1. Chapter 3 Hand Tools

  2. Tools • Why should you invest in the best tool for the job?1. Cheap tools break easily2. Cheap tools sometimes damage fasteners (rounded bolts / nuts, stripped screws)3. Quality tools last longer, perform better, and are less likely to damage fasteners4. Quality tools come with a lifetime warranty

  3. Tool Design Quality tools are made of high strength alloy steel and should be light and easy to use in tight quarters. A quality tool is slim and properly designed to fit your hand.

  4. Tool Quality Quality Tools are heat treated, and the working surface is at a close tolerance, a 3/4 is a 3/4 sharp edges are removed, and tools are polished. Tech Tip: Keep your tools clean! A greasy or oily tool can decrease a technician’s performance and may slip causing injury to the technician.

  5. When buying tools, you get what you pay for !

  6. Tips to Remember • KEEP YOUR TOOLS CLEAN! • Separate cutting tools • Lightly oil any tool that might rust • Delicate measuring tools- keep in protective containers micrometers etc. • Engrave your tools with Drivers license. • Put Name & license Number on all tools

  7. Major brands of Quality hand tools:Snap On, Craftsman, S-K Wayne, Matco, Mac, HuskeyProto, Master MechanicNew Britain

  8. Tool Boxes Three Main Parts of Tool Box • Top Box(for frequently used tools)(dividers help organize small tools) • Bottom Box (Roll-away)(for larger and heavier tools) • Side Box(for lighter bulkier tools)

  9. When working in the shop • Always wear safety glasses • or a full face shield

  10. Wrenches • Wrenches are a way to remove and replace bolts etc, but they are slow. Use only as a last resort. You should use air tools or ratchets if at all possible, because they are faster. • (Remember, pull with a wrench you have better control, if you do push, push with your palm open.)

  11. Wrench Size • size is determined by width of jaw opening.

  12. Slug Wrench • This is the only wrench designed to be used with a hammer.

  13. Open End Wrench • Size is determined by the width of jaw opening. • The open end is angled or offset by 15 degrees at one end to help reach fasteners in tight spots.

  14. Box End Wrench • Box-end wrenches are available in 6 or 12 point openings. Can be double offset or box offset 15 degrees for clearance for hand. • Comes in different lengths, each end is a different size, good wrench for breaking loose tight bolts

  15. Combination Wrench • One end open, one end boxed both the same size can be different lengths

  16. Tubing Wrench - (flare nut) • Box type wrench with section cut away. One end sometimes might be open like a combination wrench. Make sure you buy 6pt. – (12pt. are no good, they will slip)

  17. Adjustable Open-End WrenchAKA “Crescent” Wrench • Not a replacement for all other wrenches. Try to always use the correct size wrench. This wrench is usually used as a last resort, and tends to slip. Adjust jaws firmly. You should only put pressure on the fixed jaw.

  18. Ignition Wrench • one end open, one end boxed or both ends open different size at each end

  19. Socket Wrench • Sockets come in many sizes with different openings. 6 pt. & 12 pt. are the most common. • They are used to remove and install nuts and bolts. • 8 pt or double square are used on square nuts. Square (4 sided) sockets are also used in special applications 6 point 8 point 12 point

  20. Drive size common to Automotive are 1/4, 3/8, 1/2, 3/4 - square hole

  21. Sockets • Shallow Sockets • Chrome 12pt. • & Impact 6pt. • Deep Sockets • chrome 12pt. • & Impact 6pt.

  22. Sockets • Swivel sockets Impact • or Wobbly sockets • crowfeet

  23. Sockets • Extensionsused to extend reach of sockets • Universal JointA “universal” is used to reach around obstructions. Impact Standard

  24. Torque Stix • Used to torque down lug nuts to the proper torque when using a impact wrench. The larger the shaft the more torque it will carry.

  25. Torque Sticks • Look up on the chart for your make and model or if you know the torque look on the chart and find the right torque stix

  26. Socket Handles • ratchet - short and long Swivel Head Ratchet

  27. Socket handles • speed handle - and swivel speed handleused to rapidly spin a fastener off and on • flex handle or breaker bar long and short • sliding T bar

  28. Torque wrenches A torque wrench is a tool used to precisely set the torque or tightness of a fastener such as a nut or bolt. • Beam type • Dial type sometimes referred to as a Micrometer type or Click Type

  29. Torque wrenches Digital

  30. Torque wrenches • Come in inch lbs and foot lbs • Always look up tightening sequence • Always look up the amount of Torque • Recheck each fastener twice • Pull with a steady pull, do not jerk • Make sure threads are clean • Remember that it takes more force to start a fastener then to keep it turning.

  31. Allen Wrenches • An Allen wrench is one type of wrench that connects to a specially made hex fastener

  32. Screw drivers • Slotted • Pozi-Drive Phillips • Phillips • Torx • Allen / Hex

  33. Screw driver Selection • Blade should fit the slot snugly and have good surface contact with no play

  34. Screw drivers • Reed and Prince • clutch

  35. Screw drivers • Pozi-drive • Allen or Hex tip

  36. Screw drivers • Scurlox or Square Drive • Torx

  37. Screw drivers • Offset

  38. Screw drivers • Screwdrivers are classed in size of shank such as 3/16, 1/4, 5/16, and length of shank such as 2", 4", 6". Some manufactures take length of shank and handle. Normally just the shank is measured. • Handles come in different shapes to get better torque on screw

  39. Screw Driver Use Never use a screwdriver as a pry bar or punch! • Some shanks are square so you may apply a wrench • If holding small object in hand do not run screwdriver through hand, keep hand back! • Screwdriver handles are not usually insulated

  40. Pliers Used to grip various parts • Combination slip joint pliers • Diagonal side cutters Used for cutting soft metal

  41. Pliers • Needle nose • Channel lock or Arc joint (Sears) • Snap-on calls them Adjustable Joint • Used to be called water pump pliers

  42. Pliers • Linesman

  43. Locking Pliers • Locking Pliers or Vise Grips(Brand Name)used to clamp and holdvarious parts • Needle Nose Locking Pliers or Vise Grips • Lock ring pliers

  44. Pliers • Locking C-Clamp

  45. Pliers • Snap Ring - Internal or External

  46. Pliers • Spark Plug Boot Pliers

  47. Pliers • Brake pliers • Hose clamp pliers

  48. Pliers • Robo Grip

  49. Pliers • Pinch off hose pliers

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