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Temporary bolt fastening and loosening
By using the B or C on the left dial in combination with one of the digits (from 0 to 9) on the right-hand dial, you can do temporary
bolt fastening or bolt loosening.
Dial setting
B [*]
Select dial 0 − 9 for B [*]
C [*]
Select dial 0 – 9 for C [*]
Operation
CAUTION:
Always insert the battery cartridge all the way until it locks in
place. If you can see the red part on the upper side of the
button, it is not locked completely. Insert it fully until the red
part cannot be seen. If not, it may accidentally fall out of the
tool, causing injury to you or someone arround you.
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 Fig. 8 for standard bolt or Fig. 9 for
high tensile bolt. Hold the tool firmly and place the socket over
the bolt or nut. Turn the tool on and fasten for the proper
fastening time.
[*1] Presetting number of impacts is impossible for more than
200 impacts (4 seconds).
[*2] Fastening time includes when you pull the trigger com-
pletely.
NOTE:
• When fastening screw M8 or smaller, carefully adjust pres-
sure on the switch trigger so that the screw is not damaged.
• Hold the tool pointed straight at the bolt.
• If you fasten the bolt for a time longer than shown in the
figure, the bolt or the socket may be overstressed, dam-
aged, etc. Before starting your job, always perform a test
operation to determine the proper fastening time for your
bolt. Especially for the bolt other than M8, perform the
above test operation to prevent the trouble on socket or bolt,
etc.
The fastening torque is affected by a wide variety of factors
including the following. After fastening, always check the
torque with a torque wrench.
1. When the battery cartridge is discharged almost com-
pletely, 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 the 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 manner of holding the tool or the material of driving
position to be fastened will affect the torque.
5. Operating the tool at low speed will cause a reduction in
the fastening torque.
All manuals and user guides at all-guides.com
Clockwise
After
catching
the
first
impact, tool stops [*] x 0.1
seconds later.
Pull the trigger to start the
tool; release it to stop.
Counterclockwise
Pull the trigger to start the
tool; release it to stop.
After stopping to impact, tool
stops [*] x 0.1 seconds later.
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and the battery
cartridge is removed before carrying out any work on the tool.
Replacement of carbon brushes (Fig. 10 & 11)
Replace carbon brushes when they are worn down to the limit
mark. Both identical carbon brushes should be replaced at the
same time.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.
Application
For temporary bolt fastening.
To loosen bolts.
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