1 SCREWDRIVERS 3. PROPER USE OF HAND TOOLS B A

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Presentation transcript:

1 SCREWDRIVERS 3. PROPER USE OF HAND TOOLS B A Designated by Width(A) X Shaft length(B) Plain (Slotted screwdriver) Phillips screwdriver

3. PROPER USE OF HAND TOOLS Plastic screwdriver for checking ignition Screwdriver with light Automatic screwdriver Impact screwdriver

3. PROPER USE OF HAND TOOLS 1) Handling method 2) Caution items

2 ADJUSTABLE WRENCH 3. PROPER USE OF HAND TOOLS Length(mm) Adjusting screw Fixed jaw Adjustable jaw Length(mm)

1) Handling method 2) Caution items 3. PROPER USE OF HAND TOOLS Big load Fixed jaw 2) Caution items

3 WRENCHES 3. PROPER USE OF HAND TOOLS Single-end wrench Double-end wrench(same aperture) Double-end wrench(different apertures) Offset

Tighten by pulling direction 3. PROPER USE OF HAND TOOLS 1) Handling method Tighten by pulling direction 2) Caution items

4 PLIERS 3. PROPER USE OF HAND TOOLS Thin straight pliers Thin bentnose pliers Longnose pliers Cutting pliers

3. PROPER USE OF HAND TOOLS 1) Handling method 2) Caution items

5 RATCHET HANDLE (WRENCH) 3. PROPER USE OF HAND TOOLS 5 RATCHET HANDLE (WRENCH) Socket insert part Ratchet Handle (Wrench) Gear Pawl Lever Cam

1) Handling method 2) Caution items 3. PROPER USE OF HAND TOOLS Wrong Correct

6 T-TYPE BOX WRENCH 3. PROPER USE OF HAND TOOLS Grip Universal joint T-type wrench

3. PROPER USE OF HAND TOOLS 1) Handling method 2) Caution items

7 IMPACT WRENCH 3. PROPER USE OF HAND TOOLS Hammer case Body cover Changeover lever Valve lever Air inlet

8 OFFSET WRENCH Open offset wrench Caution items 3. PROPER USE OF HAND TOOLS 8 OFFSET WRENCH Open offset wrench Cut grove Caution items

9 TIGHTENING TORQUE L F 3. PROPER USE OF HAND TOOLS Tightening torque = Wrench length (L) X Force applied by the hand (F) Standard Torque Table

10 TORQUE WRENCH 1) Types 3. PROPER USE OF HAND TOOLS Plate type Dial type Preset type

Tighten by pulling direction 3. PROPER USE OF HAND TOOLS 2) Handling method Tighten by pulling direction

11 BOLT AND NUT TIGHTENING TORQUE TABLE 3. PROPER USE OF HAND TOOLS 11 BOLT AND NUT TIGHTENING TORQUE TABLE Unit : (kgcm)