Makita 6924N User Manual

INSTRUCTION MANUAL MANUEL D'INSTRUCTION MANUAL DE INSTRUCCIONES

Shear Wrench Boulonneuse (pour ecrous à rompre) Llave para tornillos de cabeza degollante

6924N

IMPORTANT: Read Before Using. IMPORTANT: Lire avant usage. IMPORTANTE: Leer antes de usar.

005843

DOUBLE INSULATION DOUBLE ISOLATION DOBLE AISLAMIENTO

ENGLISH (Original instructions)

SPECIFICATIONS

Model 6924N

Applicable bolt size

Max. normal torque 1,100 N•m (810 ft•lbs) No load speed (RPM) 19/min Dimensions (L×W×H) 330 mm × 104 mm × 257 mm (13" × 4-1/8" × 10-1/8")

Net weight 7.4 kg (16.3 lbs)

• Due to our continuing programme of research and development, the specifications herein are subject to change without notice.

• Specifications may differ from country to country.

GENERAL SAFETY RULES (For All Tools)

WARNING! Read and understand all instructions.

Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.

SAVE THESE INSTRUCTIONS.

Work Area

1. Keep your work area clean and well lit.

Cluttered benches and dark areas invite accidents.

2. Do not operate power tools in explosive

atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools

create sparks which may ignite the dust or fumes.

3. Keep bystanders, children, and visitors away while operating a power tool. Distractions can cause you to lose control.

Electrical Safety

4. Double insulated tools are equipped with 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 a polarized outlet. Do not change the plug in any way. Double insulation

the three wire grounded power cord and grounded power supply system.

5. Avoid body contact with grounded surfaces

such as pipes, radiators, ranges and refrigerators. There is an increased risk of

electric shock if your body is grounded.

6. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.

A325 7/8",1" A490 7/8"

USA002-2

eliminates the need for

7. Do not abuse the cord. Never use the cord to

carry the tools or pull the plug from an outlet. Keep cord away from heat, oil, sharp edges or moving parts. Replace damaged cords immediately. Damaged cords increase the risk of

electric shock.

8. When operating a power tool outside, use an outdoor extension cord marked "W-A" or "W". These cords are rated for outdoor use and reduce the risk of electric shock.

Personal Safety

9. Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A

moment of inattention while operating power tools may result in serious personal injury.

10. Dress properly. Do not wear loose clothing or

jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts.

Loose clothes, jewelry, or long hair can be caught in moving parts.

11. Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your finger on the switch or plugging in tools that have the switch on invites accidents.

12. Remove adjusting keys or wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury.

13. Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations.

14. Use safety equipment. Always wear eye protection. Dust mask, non-skid safety shoes, hard hat, or hearing protection must be used for appropriate conditions. Ordinary eye or sun glasses are NOT eye protection.

Tool Use and Care

15. Use clamps or other practical way to secure and support the workpiece to a stable platform.

Holding the work by hand or against your body is unstable and may lead to loss of control.

16. Do not force tool. Use the correct tool for your application. The correct tool will do the job better and safer at the rate for which it is designed.

17. Do not use tool if switch does not turn it on or off. Any tool that cannot be controlled with the switch is dangerous and must be repaired.

18. Disconnect the plug from the power source

before making any adjustments, changing accessories, or storing the tool. Such

preventive safety measures reduce the risk of starting the tool accidentally.

19. Store idle tools out of reach of children and other untrained persons. Tools are dangerous in the hands of untrained users.

20. Maintain tools with care. Keep cutting tools sharp and clean. Properly maintained tools with sharp cutting edges are less likely to bind and are easier to control.

21. Check for misalignment or binding of moving

parts, breakage of parts, and any other condition that may affect the tool’s operation. If damaged, have the tool serviced before

using. Many accidents are caused by poorly

maintained tools.

22.

Use only accessories that are recommended by the manufacturer for your model.

Accessories that may be suitable for one tool, may become hazardous when used on another tool.

Service

23. Tool service must be performed only by qualified repair personnel. Service or

maintenance performed by unqualified personnel could result in a risk of injury.

24. When servicing a tool, use only identical

replacement parts. Follow instructions in the Maintenance section of this manual. Use of

unauthorized parts or failure to follow Maintenance instructions may create a risk of electric shock or injury.

USE PROPER EXTENSION CORD. 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 1 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.

Table 1: Minimum gage for cord

Ampere Rating

Volts Total length of cord in feet

120 V 25 ft. 50 ft. 100 ft. 150 ft.

More Than Not More Than AWG

0 6 18 16 16 14

18 16 14 12610

10 12 16 16 14 12

000173

SPECIFIC SAFETY RULES

DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to shear wrench safety rules. If you use this tool unsafely or incorrectly, you can suffer serious personal injury.

1. Always be sure you maintain good balance

2. Hold the tool firmly.

3. Use care and common sense when disposing

12 16 14 12

USB051-2

SAVE THESE INSTRUCTIONS.

WARNING:

MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

and firm footing. Be sure no one is below when using the tool in high or elevated locations.

of sheared bolt tips. Falling tips from high locations or scattered tips can cause severe injury.

Symbols

The followings show the symbols used for tool.

･ volts

･ amperes

･ hertz

Not Recommended

USD201-2

･ alternating current

･ no load speed

･ Class II Construction

･ revolutions or reciprocation per minute

FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on the tool.

Switch action

1. Switch trigger

005844

CAUTION:

• Before plugging in the tool, always check to see

that the switch trigger actuates properly and

returns to the "OFF" position when released. To start the tool, simply pull the switch trigger. Release the switch trigger to stop.

ASSEMBLY

CAUTION:

•

Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Removing the outer and inner sleeves

1. Outer sleeve

2. Screw

CAUTION:

• Be careful not to allow foreign matter to enter the

insides of the tool when removing or installing the

outer and inner sleeves. The outer sleeve 1" and inner sleeve 1" are factory installed. If you need other sizes for your work, replace the sleeves as follows. Loosen the two screws while holding the outer sleeve. The outer and inner sleeves will be pushed up by the springs built into the tool. Press the pin down to remove the inner sleeve from the outer sleeve. Be careful not to drop the inner sleeve when removing it. Do not remove the inner sleeve spring, tip rod and tip rod spring from the tool.

1. Inner sleeve

2. Pin

3. Outer sleeve

004985

004986

1. Tip rod

2. Tip rod spring

3. Inner sleeve spring

Installing the outer and inner sleeves

Hold the inner sleeve with the pin facing upward. Place the outer sleeve over the inner sleeve. Press the pin to allow inserting the inner sleeve, then release the pin to secure the inner sleeve.

1. Outer sleeve

2. Pin

3. Inner sleeve

005845

004987

Insert the outer and inner sleeves into the tool while rotating the inner sleeve alternately clockwise and counterclockwise until there is no gap between the outer sleeve and the tool. See the figure. Then tighten the two screws securely.

005846

1. There should be no gap between

the outer sleeve and the tool.

2. Inner sleeve

3. Outer sleeve

4. Screw

OPERATION

Bolt installation

Slip the tool onto the bolt so that the inner sleeve completely covers the bolt tip.

1. Inner sleeve

2. Bolt tip

004991

Release the switch trigger and withdraw the tool in a straight line.

1. Notched portion

2. Bolt tip

1. Outer sleeve

004989

CAUTION:

• Be careful when fitting the sleeve onto the bolt tip.

Striking the tip can damage it so that it will no

longer fit inside the sleeve properly. Keep forward pressure on the tool while sliding it further forward until the outer sleeve fits completely over the nut. If the tool fails to fit completely over the nut, twist the tool slightly right and left while pushing forward.

004990

Pull the switch trigger. The outer sleeve turns to begin tightening the nut. When the specified torque is attained, the bolt tip will be sheared at its notched portion. The bolt tip will remain inside the inner sleeve.

1. Outer sleeve

2. Nut

004992

Pull the tip ejector (tip lever) to eject the bolt tip from the tool. Catch the sheared bolt tips to prevent them from falling dangerously below. Keep the tips off of the ground, floor, walkways, etc. to prevent injury from tripping or falling.

004993

005847

CAUTION:

• Washer and nut have head and tail. Head has

identification mark for nut and chamfer for washer. When placing them, be careful not to place in reverse.

1. Bolt tip

1. Tip ejector (Tip lever)

1. Identification mark

2. Nut

3. Bolt

4. Chamfered

5. Washer

005848

CAUTION:

• Replace nut, bolt and washer all together at one

time when these rotate together, nut rotates excessively or a bolt protrude from nut surface too much or less.

• Do not reuse used nut, bolt and washer.

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection or maintenance.

• Never use gasoline, benzine, thinner, alcohol or

the like. Discoloration, deformation or cracks may result.

Replacing carbon brushes

1. Limit mark

1. Screwdriver

2. Brush holder

cap

005849

To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts.

ACCESSORIES

CAUTION:

• These accessories or attachments are

recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or

attachment for its stated purpose. If you need any assistance for more details regarding these accessories, ask your local Makita Service Center.

Sleeve Bolt size Length (mm)

Outer sleeve 7/8" 49

Inner sleeve 7/8" 48

Outer sleeve 1" 49

Inner sleeve 1" 49

006501

001145

Remove and check the carbon brushes regularly. Replace when they wear down to the limit mark. Keep the carbon brushes clean and free to slip in the holders. Both carbon brushes should be replaced at the same time. Use only identical carbon brushes. Use a screwdriver to remove the brush holder caps. Take out the worn carbon brushes, insert the new ones and secure the brush holder caps.

+ 14 hidden pages