Operation - Makita 6906 Instruction Manual

For socket with O-ring and pin
1
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.

OPERATION

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.
N.m
(ft.lbs)
400
(258)
300
(216)
200
(144)
100
(72)
1 2
0
N.m
(ft.lbs)
700
(505)
600
(433)
500
(361)
400
(288)
300
(216)
200
(144)
100
(72)
0 1 2
005300
1. Socket
2
2. O-ring
3
3. Pin
For 6905B
Rated voltage
90% of rated voltage
3 4 5 6
Fastening time
For 6906
Rated voltage
90% of rated voltage
3 7
4 5 6
Fastening time
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:
002348
• 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 or nut.
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. Voltage
Voltage drop will cause a reduction in the fastening
torque.
2. Socket
7 8
(S)
•
•
002351
3. Bolt
•
•
4. The use of the universal joint or the extension bar
somewhat reduces the fastening force of the impact
8
wrench. Compensate by fastening for a longer
(S)
period of time.
5
007443
6905B
007445
6906
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.
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.