WH 14 - Screwdriver HITACHI - Free user manual and instructions

USER MANUAL WH 14 HITACHI

INSTRUCTION MANUAL AND SAFETY INSTRUCTIONS

IMPORTANT INFORMATION Read and understand all of the operating instructions, safety precautions and warnings in the Instruction Manual before operating or maintaining this power tool. Most accidents that result from power tool operation and maintenance are caused by the failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing a potentially hazardous situation before it occurs, and by observing appropriate safety procedures. Basic safety precautions are outlined in the “SAFETY” section of this Instruction Manual and in the sections which contain the operation and maintenance instructions. Hazards that must be avoided to prevent bodily injury or machine damage are identified by WARNINGS on the power tool and in this Instruction Manual. Never use this power tool in a manner that has not been specifically recommended by HITACHI, unless you first confirm that the planned use will be safe for you and others.

MEANINGS OF SIGNAL WORDS

WARNING indicates a potentially hazardous situations which, if ignored, could result in serious personal injury. CAUTION indicates a hazardous situations which, if ignored, could result in moderate personal injury, or could cause machine damage. NOTE emphasizes essential information.English

WARNING: Death or serious bodily injury could result from improper or unsafe use

of power tools. To avoid these risks, follow these basic safety instruc- tions:

Never place your hands, fingers or other body parts near the tool’s moving parts.

2. NEVER OPERATE WITHOUT ALL GUARDS IN PLACE.

Never operate this tool without all guards or safety features in place and in proper working order. If maintenance or servicing requires the removal of a guard or safety feature, be sure to replace the guard or safety feature before resuming operation of the tool.

3. ALWAYS WEAR EYE AND EAR PROTECTOR.

Protect yourself from flying or expelled wood chips, metal particles or other debris by using protective goggles or equivalent eye protector. Wear ear protector to protect yourself from excessive noise.

4. PROTECT YOURSELF AGAINST ELECTRIC SHOCK.

Prevent body contact with grounded surfaces such as pipes, radiators, ranges and refrigeration enclosures. Never operate the tool in damp or wet locations.

5. DISCONNECT TOOLS.

Never leave the tool connected to a power source. Always disconnect the tool from its power source before servicing, inspecting, maintaining, cleaning and before changing or checking any parts.

6. AVOID UNINTENTIONAL STARTING.

Don’t carry the tool while it is connected to its power source. Don’t carry the tool with your finger near the power switch. Be sure the power switch is in the “off” position before connecting the tool to its power source.

7. STORE TOOL PROPERLY.

When not in use, the tool should be stored in a dry place. Keep out of reach of children. Lock-out the storage area.

8. KEEP WORK AREA CLEAN.

Cluttered areas and benches invite injuries. Clear all work areas and work benches of unnecessary tools, debris, furniture, etc.

9. CONSIDER WORK AREA ENVIRONMENT.

Don’t expose power tools to rain. Don’t use power tools in damp or wet locations. Keep work area well lit and well ventilated. Don’t use tool in presence of flammable liquids or gases. Power tools produce sparks during operation. They also spark when switching ON/ OFF. Never use power tools in sites containing lacquer, paint, benzine, thinner, gasoline, gases, adhesive agents, and other materials which are combustible or explosive.English

Do not let visitors contact tool or extension cord. All visitors should be kept safely away from work area.

11. DON’T FORCE TOOL.

It will do the job better and safer at the rate for which it was intended.

Don’t force small tool or attachment to do the job of a heavy-duty tool. Don’t use tool for purpose not intended —for example— don’t use circular saw for cutting tree limbs or logs.

Do not wear loose clothing or jewelry. They can be caught in moving parts. Rubber gloves and non-skid footwear are recommended when working outdoors. Wear protective hair covering to contain long hair.

14. USE FACE, DUST MASK OR RESPIRATOR IF OPERATION IS DUSTY.

All persons in the area where power tools are being operated should also wear face, dust mask or respirator.

15. DON’T ABUSE CORD.

Never carry tool by cord or yank it to disconnect from receptacle. Keep cord from heat, oil and sharp edges.

Use clamps or a vise to hold work. It’s safer than using your hand and it frees both hands to operate tool.

17. DON’T OVERREACH.

Keep proper footing and balance at all times.

18. MAINTAIN TOOLS WITH CARE.

Keep tools sharp and clean for better and safer performance. Follow instructions for lubricating and changing accessories. Inspect tool cords periodically and if damaged, have repaired by an authorized service center. Inspect extension cords periodically and replace if damaged. Keep handles dry, clean, and free from oil and grease.

19. REMOVE ADJUSTING KEYS AND WRENCHES.

Keys and adjusting wrenches remove from tool before turning it on.

20. OUTDOOR USE EXTENSION CORD.

When tool is used outdoors, use only extension cord intended for use outdoors and so marked.

Watch what you are doing. Use common sense. Do not operate tool when you are tired. Tools should never be used by you if you are under the influence of alcohol, drugs or medication that makes you drowsy.

22. CHECK DAMAGED PARTS.

Before further use of the tool, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced by an authorized service center unless otherwise indicated elsewhere in this Instruction Manual. Have defective switches replaced by the authorized service center. Do not use tool if switch does not turn it on and off.English

Never use a power tool for applications other than those specified in the Instruction Manual.

24. HANDLE TOOL CORRECTLY.

Operate the tool according to the instructions provided herein. Do not drop or throw the tool. Never allow the tool to be operated by children, individuals unfamiliar with its operation or unauthorized personnel.

25. CHECK FOR LIVE WIRES.

Avoid the risk of severe electrical shock by checking for live electrical wires that may be buried in walls, floors or ceilings. The wires should be de-energized before work begins.

26. KEEP ALL SCREWS, BOLTS AND COVERS TIGHTLY IN PLACE.

Keep all screws, bolts, and plates tightly mounted. Check their condition periodically.

27. DO NOT USE POWER TOOLS IF THE PLASTIC HOUSING OR HANDLE IS CRACKED.

Cracks in the tool’s housing or handle can lead to electric shock. Such tools should not be used until repaired.

28. BLADES AND ACCESSORIES MUST BE SECURELY MOUNTED TO THE TOOL.

Prevent potential injuries to youself or others. Blades, cutting implements and accessories which have been mounted to the tool should be secure and tight.

29. KEEP MOTOR AIR VENT CLEAN.

The tool’s motor air vent must be kept clean so that air can freely flow at all times. Check for dust build-up frequently.

30. OPERATE POWER TOOLS AT THE RATED VOLTAGE.

Operate the power tool at voltages specified on its nameplate. If using the power tool at a higher voltage than the rated voltage, it will result in abnormally fast motor revolution and may damage the unit and the motor may burn out.

31. NEVER USE A TOOL WHICH IS DEFECTIVE OR OPERATING ABNORMALLY.

If the tool appears to be operating unusually, making strange noises, or otherwise appears defective, stop using it immediately and arrange for repairs by a Hitachi authorized service center.

32. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF.

Don’t leave tool until it comes to a complete stop.

33. CAREFULLY HANDLE POWER TOOLS.

Should a power tool be dropped or struck against hard materials inadvertently, it may be deformed, cracked, or damaged.

34. DO NOT WIPE PLASTIC PARTS WITH SOLVENT.

Solvents such as gasoline, thinner benzine, carbon tetrachloride, and alcohol may damage and crack plastic parts. Do not wipe them with such solvents. Wipe plastic parts with a soft cloth lightly dampened with soapy water and dry thoroughly.

35. USE ONLY GENUINE HITACHI REPLACEMENT PARTS.

Replacement parts not manufactured by Hitachi may void your warranty and can lead to malfunction and resulting injuries. Genuine Hitachi parts are available from your dealer.English

WARNING: Death or serious bodily injury could result from improper or unsafe use

of the impact wrench. To avoid these risks, follow these basic safety instructions:

1. When working in high places, check there is nobody below. During operation, take care

not to catch or tighten the cord accidentally.

2. Use the earplugs if using for a long time use.

3. Switch the reversing switch only after the motor is stopped when it is necessary to change

the direction of the rotation.

4. Use a step up transformer when a long extension cable is used.

5. Confirm the tightening torque by a torque wrench before use in order to ascertain the

correct tightening torque to be used.

6. Attach the hex. socket securely onto the anvil. If the hex. socket is insufficiently secured,

it may drop out and cause an accident. For hex. socket attachment refer to "PRIOR TO OPERATION" on page 13.

7. Confirm whether the socket has any crack in it.

REPLACEMENT PARTS When servicing use only identical replacement parts. Repairs should be conducted only by a Hitachi authorized service center. POLARIZED PLUGS To reduce the risk of electrick shock, this equipment has a polarized plug (one blade is wider than the other). This plug will fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install the proper outlet. Do not change the plug in any way.English

Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. Table shows the correct size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gage. The smaller the gage number, the heavier the cord.

WARNING: Avoid electrical shock hazard. Never use this tool with a damaged or

frayed electrical cord or extension cord. Inspect all electrical cords regularly. Never use in or near water or in any environment where electric shock is possible.English

To ensure safer operation of this power tool, HITACHI has adopted a double insulation design. “Double insulation “ means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator. Therefore, either the symbol “ ” or the words and “Double insulation” appear on the power tool or on the nameplate. Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this Instruction Manual, including not using the power tool in wet environments. To keep the double insulation system effective, follow these precautions: 䡬 Only HITACHI AUTHORIZED SERVICE CENTER should disassemble or assemble this power tool, and only genuine HITACHI replacement parts should be installed. 䡬 Clean the exterior of the power tool only with a soft cloth moistened with soapy water, and dry thoroughly. Never use solvents, gasoline or thinners on plastic components; otherwise the plastic may dissolve.

SAVE THESE INSTRUCTIONS

OTHER USERS OF THIS TOOL!English

NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool. Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool

WARNING: Accessories for this power tool are mentioned in this Instruction

Although the Hitachi Impact Wrench is delivered with only one standard socket, ample sockets are available to cover impact tightening of various sizes and types of bolts.

NOTE: Accessories are subject to change without any obligation on the part of the HITACHI. APPLICATIONS 䡬 Tightening and loosening various kinds of bolts and nuts (2) WH22: Table 2 B = 3/4" (19 mm) Socket Ordinary Socket Long Socket Designation Dimension (mm) Dimension (mm) Hex. Socket

The extension bar is convenient for working in very restricted spaces or when the socket provided cannot reach the bolt to be tightened. CAUTION: When the extension bar is used the tightening torque is reduced slightly compared with the ordinary socket. So it is necessary to operate the tool a little longer to get the same torque.

3. Universal joint : Code No. 955135 (WH14) Code No. 955088 (WH22)

The universal joint is convenient for impacting nuts when there is an angle between the socket and wrench, or when working in a very narrow space.

4. Corner attachment (Model EW-14R) (WH14, WH16)

Use this attachment only when the machine is applied to the nut or bolt at a right angle.English

Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate.

Ensure that the switch is in the OFF position. If the plug is connected to a receptacle while the switch is in the ON position, the power tool will start operating immediately and can cause serious injury.

When the work area is far away from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

WARNING: Damaged cord must be replaced or repaired.

4. Check the receptacle

If the receptacle only loosely accepts the plug, the receptacle must be repaired. Contact a licensed electrician to make appropriate repairs. If such a fautly receptacle is used, it may cause overheating, resulting in a serious hazard.

5. Confirming condition of the environment:

Confirm that the work site is placed under appropriate conditions conforming to prescribed precautions.

6. Attacking the side handle

The position of the side handle attached to the hammer case can be changed by unscrewing the handle. (Right hand screw) Turn the handle to the desired position for the job and secure the handle by screwing up tight.

7. Mounting the socket

(1) Pin, O-ring type (WH22) (Fig.2) Select a socket matched to the bolt to be tightened or loosened. Insert the socket on the anvil of the wrench, and secure it with the pin and ring. When removing the socket, reverse the sequence. (2) Plunger type (WH14, WH16) (Fig.3) Align the plunger located in the square part of the anvil with the hole in the hex. socket. Then push the plunger, and mount the hex. socket on the anvil. Check that the plunger is fully engaged in the hole. When removing the socket, reverse the sequence. Fig. 2 Pin Hex. socket Anvil Ring Fig. 3 Hex. socket Plunger Anvil HoleEnglish

1. Operation of switch (Fig.4)

The switch in this machine functions as a motor switch and rotational direction selector switch. When the switch is set to R indicated on the handle cover, the motor rotates clockwise to tighten the bolt. When the switch is set to L, the motor rotates counterclockwise to loosen the bolt. When the switch is released, the motor stops. CAUTION: Be sure to turn the switch OFF and wait until the motor completely stops before changing the direction of wrench revolution. Switching while the motor is rotating will result in burning the motor.

2. Tightening and loosening bolts

A hex. socket matching the bolt or nut must first be selected. Then mount the socket on the anvil, and grip the nut to be tightened with the hex. socket. Holding the wrench in line with the bolt, press the power switch to impact the nut for several seconds. If the nut is only loosely fitted to the bolt, the bolt may turn with the nut, therefore preventing proper tightening. In this case, stop impact on the nut and hold the bolt head with a wrench before restarting impact, or manually tighten the bolt and nut to prevent them slipping. OPERATIONAL CAUTIONS

1. Confirm the line voltage (Figs.5, 6, 7,

8 and 9) The available tightening torque is influenced by line voltage. Reduced line voltage lowers the available tightening torque. For example, if you use a 115 V type wrench on a 105 V line the available tightening torque will be reduced to 70 to 90%. When extending the power cord, use an extension cord which is as short as possible. When the line voltage is low and a long extension cord is needed a step up transfomer should be used. The relation between the line voltage and the tightening torque are shown in the figures.

2. Work at a tightening torque suitable

for the bolt under impact The optimum tightening torque for nuts and bolts differs with material and size of the nuts and bolts. An excessively large tightening torque for a small bolt may stretch or break the bolt. The tightening torque increases proportionally to the operating time. Use the correct operating time for the bolt.

3. Selecting the socket to be matched

to the bolt Be sure to use a socket which is matched to the bolt to be tightened. Using an improper socket will result not only in insufficient tightening but also in damage to the socket or nut. A worn or deformed hex. or square-holed socket will not give an adequate tightness for fitting to the nut or anvil, consequently resulting in loss of tightening torque. Pay attention to wear of socket holes, and replace before further wear has developes. Matching socket and bolt sizes are shown in Tables 1 and 2. The numerical value of a socket designation denotes the side-to-side distance (S) of its hex. hole.

Hold the Impact Wrench firmly with both hands by the body handle and the side handle. In this case hold the wrench in line with the bolt. It is not necessary to push the wrench very hard. Hold the wrench with a force just sufficient to counteract the impact force.

5. Confirm the tightening torque

The following factors contribute to a reduction of the tightening torque. So confirm the actual tightening torque needed by screwing up some bolts before the job with a hand torque wrench. Factors affecting the tightening torque are as follows. (1) Line voltage: The tightening torque decreases when the line voltage becomes low. (See Figs. 5, 6, 7, 8 and 9) Fig. 6 Fig. 7 Fig. 8 Tightening time Rating Tightening torque Tightening time Rating Tightening torque Tightening time Rating Tightening torque 115V 105V 115V 105V 115V 105VEnglish

(2) Operating time: The tightening torque increases when the operating time increases. But the tightening torque does not increase above a certain value even if the tool is driven for a long time. (See Figs. 5, 6, 7, 8 and 9) (3) Diameter of bolt: The tightening torque differs with the diameter of the bolt as shown in Figs. 5, 6, 7, 8 and 9. Generally a larger diameter bolt has a larger tightening torque. (4) Tightening conditions: The tightening torque differs according to the torque ratio; class, and length of bolts even when bolts with the same size threads are used. The tightening torque also differs according to the condition of the surface of metal through which the bolts are to be tightened. (5) Using optional parts: The tightening torque is reduced a little when an extension bar, universal joint or a long socket is used. (6) Clearance of the socket: A worn or deformed hex. or a square-holed socket will not give an adequate tightness to the fitting between the nut or anvil, consequently resulting in loss of tightening torque. Using an improper socket which does not match to the bolt will result in an insufficient tightening torque. Matching socket and bolt sizes are shown in Tables 1 and 2.

MAINTENANCE AND INSPECTION

WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle

during maintenance and inspection.

1. Inspecting the socket

A worn or deformed hex. or a square-holed socket will not give an adequate tightness to the fitting between the nut or anvil, consequently resulting in loss of tightening torque. Pay attention to wear of socket holes periodically, and replace with a new one if needed.

2. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be lossened, retighten them immediately.

WARNING: Using this impact wrench with loosened screws is extremely dangerous.

3. Inspecting the carbon brushes (Fig. 10)

The motor employs carbon brushes which are consumable parts. Replace the carbon brush with a new one when it becomes worn to its wear limit. Always keep carbon brushes clean and ensure that they slide freely within the brush holders. CAUTION : Using this impact wrench with a carbon brush which is worn in excess of the wear limit will damage the motor. NOTE: Use HITACHI carbon brush number indicated in Fig. 10.

4. Replacing carbon brushes

To replace carbon brushes, use a slotted head screwdriver to disassemble the brush caps after disassembling the cap covers. Then remove the carbon brushes together with the spring. When assembling, reverse the procedure for disassembling. In this case assemble the cap covers after screwing up the brush caps firmly.

Code No. 99509264 NPrinted in Japan

Some dust created by power sanding, sawing, grinding, drilling, and other construc- tion activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are: ● Lead from lead-based paints, ● Crystalline silica from bricks and cement and other masonry products, and ● Arsenic and chromium from chemically-treated lumber. Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.