Operation - Makita 6918D Bedienungsanleitung

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
Fig.4
1. For socket without O-ring and pin
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.5
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.
Standard bolt
.
N m
.
(kgf cm)
100
(1020)
80
(816)
60
M12
(612)
40
(408)
M10
20
(204)
0 1.0 2.0
Fastening time
005226
M14
M14
M12
M10
3.0
(S)
High tensile bolt
.
N m
.
(kgf cm)
120
(1224)
100
(1020)
80
(612)
60
(612)
40
(408)
20
(204)
0 1.0 2.0
Fastening time
005227
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:
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.
•
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 following. 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.
5
M12
M10
M8
3.0 4.0 5.0
(S)