HAND TOOLS

Learning Objective:By the end of this course, students will be able to:• Identify the specific hand tools• How to choose the right hand tools• How to use in proper way

WRENCHES

The jaws of open-end wrenches are placed at an angle in order to make it easier to work with the wrenches in close quarters, as it is frequently necessary to tighten or loosen a nut where there is very little space in which to swing a wrench. The procedure

Box-end Wrenches.-Some box-end wrenches have 6 inside faces, or notches, but most of them have 12 notches. There is little chance for a box-end wrench to slip off the nut, and it cannot spread on the nut and cause undue wear. Because the sides of the box opening are comparatively thin, the wrench is suitable for turning nuts that are hard to reach with an open-end wrench.

Tip: Quickly choose the wrench size

The nearest Wrench size=bolt size *1.7Example: M10 bolt we can use wrench 17

Nut drive

TORQUE WRENCHES

A monkey wrench has an ‘F’ shape appearance, and the top part remains at a fixed position, while the bottom part can be maneuvered up and down using a screw mechanism. It looks a little, in appearance, like an ‘F’ Clamp.Step 1 – The NutOpen the monkey wrench using the turning screw mechanism and allow plenty space for it to sit around the nuts head.Step 2 – Applying Pressurescrew the turning screw into place to tighten down on the head of the nut. Apply enough pressure that the monkey wrench jaws are clamped securely enough to turn it without them slipping off.Step 3 – TighteningIf you are tightening the nut, turn it securely in a clockwise direction, keeping the wrench moving slowly but smoothly.

PLIERS

SREWS DRIVER

Individual - Hex KeysIndividual - Ball Hex Keys Individual Torx

Hex Keys

ALLEN KEYS

Individual T-handle Hex KeyIndividual Hex ScrewdriversIndividual Loop Handle Hex Keys

Folding Hex Key Set

Tip: Quick choiceMx0.8= the nearest Allen key size

Striking tools

Important tips:

Misuse of striking tools can cause: Injuries for yourself and others Damages for equipment or tools you work with Damages for your hand tools

Two hammers should never be struck together on the face, as pieces could break off.

How to use hammer properly

When striking another tool (chisel, punch, wedge…), the striking face of the proper hammer should have a diameter 9-10mm larger than the struck face of the tool

Always use a hammer of suitable size, weight and function for the specific job

Struck or hammered tools

Important tips: When striking another tool (chisel, punch, wedge…), the

striking face of the proper hammer should have a diameter 9-10mm larger than the struck face of the tool

Never use a chisel with a mushroomed struck face or a chipped or dull cutting edge

The cutting edges of wood and ripping chisels are designed for cutting wood and equally soft material. They should never be struck against metal, stone or concrete

Never use a chisel with loose handle

Impact driver:

An impact driver is a manual or power tool that delivers a strong, sudden rotational and downward force. It is often used to loosen larger screws (bolts) and nuts that are corrosively "frozen" or over-torqued

A manual impact driver with bits and adapter

1. Install the bit adapter and bit or the appropriate socket on the tool.

2. Grasp the tool firmly in your left hand

3. Engage the stuck screw or bolt.

4. Apply downward pressure, while at the same time attempting to turn the impact driver in the direction you want the screw to turn. This is generally counterclockwise to loosen, clockwise to tighten.5. Strike the top of the impact driver with a hammer. Wear heavy gloves to minimize injury if you accidentally hit your hand with the hammer.

6. Continue striking the tool while applying pressure and turning force until the bolt is loosened enough to use a faster tool, such as a socket and ratchet wrench.

Rivet hand toolsGalvanic Corrosion • When dissimilar metals come into contact in the presence of an electrolyte, a galvanic action occurs which corrodes one metal at a faster rate and the other more slowly.

Blind Rivets

Hands onPPE: fabric glovesSeparate into 3 group for wrench, screw driver, Allen key. Change group after 10 minutes, 3times.Ask trainee share experience …

Tool name

Picture Remark

Metric wrench set

ESAP PM trolley

English wrench set

In house repair

Stanley screws driver set

ESAP PM trolley

Tool name

Picture Remark

Screw driverset

ESAP PM trolley

English Allen key

ESAP PM trolley

Stanley tool set

ESAP PM trolley

Tool name

Picture Remark

Socket wrench set

In house repair

Adjustable wrench

In house repair

Impact screw driver

In house repair

Tool name

Picture Remark

Metric Allen key

NA Borrow form MHS PM trolleyItem

namePicture Remark

Screw assembly set

ESAP cabinet

Terminal, contactor

ESAP cabinet

How to choose right hex keyNote: 1 inch =25.4mm

Exercise 1: how to choose the right tool.

Quick choiceMx0.8= the nearest Allen key size

How to choose right wrench

Quick choiceMx1.7= the nearest wrench size

How to choose right screw driver

Exercise 2: how to use the tool properly.• Fully apply the tool in

• Handle tool Perpendicularly center/ center line of nut, bolt, screw…

Hands onExercise 1: change bearing of cart wheel

Step Tool Description Remark#1: turn upside down the high temp cart on lifter

lifter Ergonomic,2 people turn the high temp cart together.

#2: disassembly wheel shaft

Wrench 14

#3: remove wheel shaft from the wheel

Step Tool Description Remark#4: remove shaft tube and one bearing

Plastic hammer and suitable chisel, clamp vice

#5: remove the other bearing

Plastic hammer and suitable chisel, clamp vice

#6: remove the bearing from shaft tube.

Plastic hammer and suitable chisel, clamp vice

Step Tool Description Remark#7: change the new bearings and assembly to shaft tube

Plastic hammer, clamp vice

#8: assembly the bearing with shaft tube to the wheel

Plastic hammer, clamp vice

#9: assembly the other new bearing to the wheel

Plastic hammer, clamp vice

Step Tool Description Remark#10a: assembly the wheel to the wheel support#10b:assembly the wheel to the wheel support

Tighten the nut by wrench 14

#11: check the wheel smoothly running after finishing

Rung the wheel to see it in good condition or not

Exercise 2: change chain and chain gear of cart rail.

Step Tool Description Remark#1: disconnect the chain

Long nose pliers

Find the chain connecter and open the keeper by long nose pliers

#2a: change the new chain

Long nose pliers

Use the chain connecter to connect the old end one to new end one before withdrawing to replace

#3: remove the grease tray

Allen key #3

Step Tool Description Remark#4: remove the clutch

Allen key 3/16

#5: loosen set screw

Allen key #3

To prevent to be lost screw, don’t remove the screw out

#6: remove the grease trap

Allen key #3

Step Tool Description Remark#7:pull the shaft out

Use hand pull the shaft out form other side

#8: disassemble the bearing assembly from the rail

Allen key 7/32

#9: loosen the set screw on bearing assembly

Allen key #3

Step Tool Description Remark#10: remove the shaft and gear form bearing assembly

Plastic hammer and suitable chisel, clamp vice

#11: loosen the set screw

Allen key 3/32

#12: disassemble gear form shaft

Plastic hammer and suitable chisel, clamp vice

Mark the line to assemble in the correct position.

Step Tool Description Remark#15:sassembe gear to shaft

Allen key 3/32

Adjust the gear to the correct position before tighten set screw

#14: assemble the shaft with gear to bearing assembly

Plastic hammer , clamp vice

#16: tighten set screw

Allen key #3

Step Tool Description Remark#17: assemble the bearing assembly to the rail

Allen key 7/32

Put the shaft through the bearing assembly and turn to adjust position of bearing assembly.

#18: put the spacer to the shaft

#19: assemble the clutch to the shaft and tighten set screw

Allen key 3/16

Push the clutch to meet the spacer

Step Tool Description Remark#20: connect the chain to loop

Long nose pliers

#21: check the chain running smoothly

Tools and equipment are requested in the session : • 1 Lifter• 2 high temp carts• 4 tool trays ( 2 middle size

and 2 large size )• Hand tools:• 1 matrix Allen key set• 1 English Allen key set• 1 chisel set• 1 set wrench• 1 adjustable wrench• 1 long nose pliers• 1 Plotted screwdriver • 1 clamp vice

Hands on• The class will be divided into group 1 and

group 2. • Group 1 will perform hands on with exercise

1 and group 2 will perform hands on with exercise 2 in the same time.

• After finishing their own exercise they will perform the other one

Safety: trainees will be reminded about safety.Use properly PPE ( gloves, glasses, safety shoes)Ergonomic posture : don’t sit on floor, lift the cart by lifter… Judgment:Tool choosing : choose the right size, standard and purposeUsing skills: use the tool in the safe and proper method