Operation - Makita 6906J Betriebsanleitung

Installing side grip (Fig. 2)
For 6906 only
Fit the side grip into the groove on the middle of the ham-
mer case and fasten securely.
Selecting correct socket
Always use the correct size socket for bolts and nuts. An
incorrect size socket will result in inaccurate and incon-
sistent fastening torque and/or damage to the bolt or nut.
Installing or removing socket
1. For socket without O-ring and pin (Fig. 3)
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.
2. For socket with O-ring and pin (Fig. 4)
Move the O-ring out of the groove in the socket and
remove the pin from the socket. Fit the socket onto
the anvil of the tool so that the hole in the socket is
aligned with the hole in the anvil. Insert the pin
through the hole in the socket and anvil. Then return
the O-ring to the original position in the socket
groove to retain the pin. To remove the socket, follow
the installation procedures in reverse.
N•m (kg•cm)
Hold the tool firmly and place the socket over the bolt or
nut. Turn the tool on and fasten for the proper fastening
time.
NOTE:
• Hold the tool pointed straight at the bolt or nut.
• 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.
The fastening torque is affected by a wide variety of fac-
tors including the following. After fastening, always check
the torque with a torque wrench.
1. Voltage
• Voltage drop will cause a reduction in the fastening
torque.
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.
4
700
(7,140)
600
(6,120)
500
(5,100)
400
(4,080)
300
(3,060)
200
(2,040)
100
(1,020)
0 1 2 3
Rated voltage
90% of rated voltage

OPERATION

For 6906 only
Always use the side grip (auxiliary handle) and firmly
hold the tool by side grip and switch handle during opera-
tions.
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 figure.
4 5 6 7
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 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.
For 6906
For 6905B
seconds
8