Makita BTW070 User manual

INSTRUCTION MANUAL
WARNING:
For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
ENGLISH
Cordless Impact
Wrench
MODEL BTW070
001278

2
SPECIFICATIONS
• Due to our continuing programme of research and development, the specifications herein are subject to change
without notice.
• Note: Specifications may differ from country to country.
Intended use
The tool is intended for fastening bolts and nuts.
For European countries only
Noise and Vibration
The typical A-weighted noise levels are
sound pressure level: 91 dB (A)
sound power level: 104 dB (A)
– Wear ear protection. –
The typical weighted root mean square acceleration
value is 6 m/s2.
EC-DECLARATION OF CONFORMITY
We declare under our sole responsibility that this product
is in compliance with the following standards of stand-
ardized documents, EN50260, EN55014 in accordance
with Council Directives, 89/336/EEC, 98/37/EC.
Yasuhiko Kanzaki CE 2004
Director
MAKITA INTERNATIONAL EUROPE LTD.
Michigan Drive, Tongwell, Milton Keynes, Bucks MK15
8JD, ENGLAND
Model BTW070
Capacities
Standard bolt M5 - M12
High tensile bolt M5 - M10
Square drive 9.5 mm
No load speed (min-1)0 - 2,500
Impacts per minute 0 - 3,000
Max. fastening torque 65 N.m
Overall length 162 mm
Net weight 1.07 kg
Rated voltage D.C. 9.6 V

3
SAFETY INSTRUCTIONS ENA002-2
WARNING:
When using battery operated tools basic safety precautions, including the
following, should be followed to reduce the risk of fire, leaking batteries and
personal injury: Read these instructions before operating this product and
save these instructions.
For safe operations:
1. Keep work area clean.
Cluttered areas and benches invite injuries.
2. Consider the work environment.
Do not expose the tool to rain. Keep work area well
lit. Do not use tools in the presence of flammable
liquids or gases.
3. Keep children away.
Do not let visitors touch the tool. Keep visitors away
from work area.
4. Store batteries or idle tools.
When not in use, tools and batteries should be
stored separately in a dry, high or locked up place,
out of reach of children.
Ensure that battery terminals cannot be shorted by
other metal parts such as screws, nails, etc.
5. Do not force the tool.
It will do the job better and safer at the rate for which
it was intended.
6. Use the right tool.
Do not force small tools or attachments to do the job
of a heavy duty tool. Do not use tools for purposes
not intended.
7. Dress properly.
Do not wear loose clothing or jewellery, they can be
caught in moving parts. Non-skid footwear is recom-
mended when working outdoors. Wear protecting
hair covering to contain long hair.
8. Use protective equipment.
Use safety glasses and if the cutting operation is
dusty, a face or dust mask.
9. Connect dust extraction equipment.
If devices are provided for the connection of dust
extraction and collection ensure these are con-
nected and properly used.
10. Do not abuse the supply cord ( if fitted ).
Never carry the tool by the cord or yank it to discon-
nect from the socket. Keep the cord away from heat,
oil and sharp edges.
11. Secure the work.
Use clamps or a vice to hold the work. It is safer
than using your hand and it frees both hands to
operate the tool.
12. Do not over-reach.
Keep proper footing and balance at all times.
13. Maintain tools with care.
Keep cutting tools sharp and clean for better and
safer performance. Follow instructions for lubrica-
tion and changing accessories. Inspect tool cords
periodically and if damaged have repaired by an
authorized service facility.
14. Disconnect tools.
Where the design permits, disconnect the tool from
its battery pack when not in use, before servicing
and when changing accessories such as blades,
bits and cutters.
15. Remove adjusting keys and wrenches.
Form the habit of checking to see that keys and
adjusting wrenches are removed from the tool
before turning it on.
16. Avoid unintentional starting.
Do not carry the tool with a finger on the switch.
17. Stay alert.
Watch what you are doing. Use common sense. Do
not operate the tool when you are tired.
18. 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, free running of moving parts, breakage of
parts, mounting and any other condition that may
affect its operation. A guard or other part that is
damaged should be properly repaired or replaced
by an authorized service facility unless otherwise
indicated in this instruction manual. Have defective
switches replaced by an authorized service facility.
Do not use the tool if the switch does not turn it on
and off.
19. Warning.
The use of any accessory or attachment, other than
recommended in this instruction manual or the cata-
log, may present a risk of personal injury.
Ensure that the battery pack is correct for the tool.
Ensure that the outside surface of battery pack or
tool is clean and dry before plugging into charger.
Ensure that batteries are charged using the correct
charger recommended by the manufacturer. Incor-
rect use may result in a risk of electric shock, over-
heating or leakage of corrosive liquid from the
battery.
20. Have your tool repaired by a qualified person.
This tool is constructed in accordance with the rele-
vant safety requirements. Repairs should only be
carried out by qualified persons using original spare
parts, otherwise this may result in considerable dan-
ger to the user.
21. Disposal of battery.
Ensure battery is disposed of safely as instructed by
the manufacturer.

4
ADDITIONAL SAFETY RULES FOR TOOL ENB025-1
1. Be aware that this tool is always in an operating
condition, because it does not have to be
plugged into an electrical outlet.
2. Hold tool by insulated gripping surfaces when
performing an operation where the cutting tool
may contact hidden wiring. Contact with a “live”
wire will also make exposed metal parts of the tool
“live” and shock the operator.
3. Wear ear protectors.
4. Check the socket carefully for wear, cracks or
damage before installation.
5. Hold the tool firmly.
6. Always be sure you have a firm footing.
7. Be sure no one is below when using the tool in
high locations.
8. The proper fastening torque may differ depend-
ing upon the kind or size of the bolt. Check the
torque with a torque wrench.
SAVE THESE INSTRUCTIONS
IMPORTANT SAFETY INSTRUCTIONS FOR
BATTERY CARTRIDGE ENC005-1
1. Before using battery cartridge, read all instruc-
tions and cautionary markings on (1) battery
charger, (2) battery, and (3) product using bat-
tery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4. If electrolyte gets into your eyes, rinse them out
with clear water and seek medical attention right
away. It may result in loss of your eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any con-
ductive material.
(2) Avoid storing battery cartridge in a con-
tainer with other metal objects such as
nails, coins, etc.
(3) Do not expose battery cartridge to water or
rain.
A battery short can cause a large current flow,
overheating, possible burns and even a break-
down.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50°C (122°F).
7. Do not incinerate the battery cartridge even if it
is severely damaged or is completely worn out.
The battery cartridge can explode in a fire.
8. Be careful not to drop or strike battery.
SAVE THESE INSTRUCTIONS
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely
discharged.
Always stop tool operation and charge the bat-
tery cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room tempera-
ture at 10°C - 40°C (50°F - 104°F). Let a hot bat-
tery cartridge cool down before charging it.
4. Charge the Nickel Metal Hydride battery car-
tridge when you do not use it for more than six
months.

5
FUNCTIONAL
DESCRIPTION CAUTION:
• Always be sure that the tool is switched off and the battery cartridge is
removed before adjusting or checking function on the tool.
Installing or removing battery cartridge
• Always switch off the tool before installation or removal of the battery
cartridge.
• To remove the battery cartridge, withdraw it from the tool while pushing
the buttons on both sides of the battery cartridge.
• To insert the battery cartridge, align the tongue on the battery cartridge
with the groove in the housing and slip it into place. Always insert it all the
way until it locks in place with a little click. If not, it may accidentally fall
out of the tool, causing injury to you or someone around you.
• Do not use force when inserting the battery cartridge. If the cartridge
does not slide in easily, it is not being inserted correctly.
Checking the remaining battery capacity
When charging
When the charging begins, the first (far left) indicating lamp begins to flicker.
Then, as charging proceeds, the other lamps light, one after the other, to indi-
cate the battery capacity.
When using
When the tool is switched on, the lamps will light to indicate the remaining bat-
tery capacity. When the tool is switched off, the light goes out after approx. 5
seconds. If the battery cartridge has not been used for a long time, or is
needed refresh charging, the orange lamp begins to flicker. Use Makita
refreshing adapter to refresh the battery cartridge.
CAUTION:
• A battery cartridge extracted from the charger that has been unplugged
with the battery cartridge inserted does not work even if it is inserted in
the tool. At this time, recharge it for about five seconds before use.
Switch action
CAUTION:
• Before inserting the battery cartridge into 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. Tool speed is increased by
increasing pressure on the switch trigger. Release the switch trigger to stop.
1. Battery cartridge
2. Button
21
001251
Indicating lamp
(C) E F Capacity
80% - 100%
60% - 80%
40% - 60%
10% - 40%
0% - 10%
Indicating lamp
Capacity
80% - 100%
60% - 80%
40% - 60%
10% - 40%
0% - 10%
EF
orange
orange
001254
1. Switch trigger
1
001255

6
Reversing switch action
This tool has a reversing switch to change the direction of rotation. Depress
the reversing switch lever from the A side for clockwise rotation or from the B
side for counterclockwise rotation.
When the reversing switch lever is in the neutral position, the switch trigger
cannot be pulled.
CAUTION:
•Always check the direction of rotation before operation.
•Use the reversing switch only after the tool comes to a complete stop.
Changing the direction of rotation before the tool stops may damage the
tool.
•When not operating the tool, always set the reversing switch lever to the
neutral position.
The remaining Battery capacity
ASSEMBLY CAUTION:
•Always be sure that the tool is switched off and the battery cartridge is
removed before carrying out any work on the tool.
Selecting correct socket
Always use the correct size socket for bolts and nuts. An incorrect size socket
will result in inaccurate and inconsistent fastening torque and/or damage to the
bolt or nut.
Installing or removing socket
To install the socket, push it onto the anvil of the tool until it locks into place.
To remove the socket, simply pull it off.
1. Reversing switch lever
AB
1
001257
(C) E F
EF
001258
1. Socket
2. Anvil
1
2
005609

7
OPERATION CAUTION:
•Hold the tool firmly and place the socket over the bolt or nut. Turn the tool
on and fasten for the proper fastening time and number of impacts
(presetting number).
•If the tool is operated continuously until the battery cartridge has
discharged, allow the tool to rest for 15 minutes before proceeding with a
fresh battery.
The proper fastening torque may differ depending upon the kind or size of the
bolt, the material of the workpiece to be fastened, etc. The relation between
fastening torque and fastening time is shown in the figures.
NOTE:
•When fastening screw M8 or smaller, carefully adjust pressure on the
switch trigger so that the screw is not damaged.
•Hold the tool pointed straight at the bolt or nut without applying excessive
pressure on the tool.
•Excessive fastening torque may damage the bolt/nut or socket. Before
starting your job, always perform a test operation to determine the proper
fastening time for your bolt or nut. Especially for the bolt smaller than M8,
perform the above test operation to prevent the trouble on socket or bolt,
etc.
•If the tool is operated continuously until the battery cartridge has
discharged, allow the tool to rest for 15 minutes before proceeding with a
fresh battery cartridge.
The fastening torque is affected by a wide variety of factors including the fol-
lowing. After fastening, always check the torque with a torque wrench.
1. When the battery cartridge is discharged almost completely, voltage will
drop and the fastening torque will be reduced.
2. Socket
•Failure to use the correct size socket will cause a reduction in the
fastening torque.
•A worn socket (wear on the hex end or square end) will cause a
reduction in the fastening torque.
3. Bolt
•Even though the torque coefficient and the class of bolt are the
same, the proper fastening torque will differ according to the
diameter of bolt.
•Even though the diameters of bolts are the same, the proper
fastening torque will differ according to the torque coefficient, the
class of bolt and the bolt length.
4. The use of the universal joint or the extension bar somewhat reduces the
fastening force of the impact wrench. Compensate by fastening for a
longer period of time.
5. The manner of holding the tool or the material of driving position to be
fastened will affect the torque.
6. Operating the tool at low speed will cause a reduction in the fastening
torque.
Standard bolt
N.m
(kgf.cm)
120
(1224)
100
(1020)
80
(812)
60
(612)
40
(408)
20
(204)
0 1.0 2.0 3.0 4.0 5.0
Proper fastening torque
Fastening torque
M12
(M12)
M10
(M10)
(M8)
M8
Fastening time (S)
005766
High tensile bolt
N.m
(kgf.cm)
60
(612)
50
(510)
40
(408)
30
(306)
20
(204)
10
(102)
0 1.0 2.0 3.0
Fastening time
(S)
Fastening torque
M10
(M10)
M8
(M8)
M6
(M6)
Proper fastening torque
005767

8
MAINTENANCE CAUTION:
•Always be sure that the tool is switched off and the battery cartridge is
removed before attempting to perform inspection or maintenance.
Replacing carbon brushes
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.
To maintain product SAFETY and RELIABILITY, repairs, any other mainte-
nance or adjustment should be performed by Makita Authorized Service Cent-
ers, 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.
1. Limit mark
1
001145
1. Brush holder cap
2. Screwdriver
1
2
001268
•Protector (clear, red, blue)
•Various type of Makita genuine batteries and
chargers
•Automatic refreshing adapter

Memo
9

Memo
10

Memo
11

Makita Corporation
884335F5