Maintenance - Makita 6915D Betriebsanleitung

Installing or removing socket (Fig. 3)
Important:
Always be sure that the tool is switched off and the bat-
tery cartridge is removed before installing or removing
the socket.
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 ori-
ginal position in the socket groove to retain the pin. To
remove the socket, follow the installation procedures in
reverse.
Switch action (Fig. 4)
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 trigger. Tool speed is
increased by increasing pressure on the trigger. Release
the trigger to stop.
Reversing switch action (Fig. 5)
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.
This tool has a reversing switch to change the direction of
rotation. Slide the reversing switch to the left for
clockwise rotation or to the right for counterclockwise
rotation.
Operation (Fig. 6 & 7)
The proper fastening torque may differ depending upon
the kind or size of the bolt. The relation between faste-
ning torque and fastening time is shown in the figures.
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 without
applying excessive pressure on the tool.
• Excessive fastening torque may damage the bolt or
nut. Before starting your job, always perform a test ope-
ration to verify the adequate fastening speed and 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. 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.
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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. Type of materials to be fastened, the manner of hol-
ding the tool and the tool speed will affect the torque.
CAUTION:
If the tool is operated continuously until the battery cartri-
dge has discharged, allow the tool to rest for 15 minutes
before proceeding with a fresh battery.
Installing set plate (Fig. 8)
Always install the set plate when using battery cartridges
1200, 1202 or 1202A. Install the set plate on the tool with
the screw provided as shown in figure.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and the bat-
tery cartridge is removed before carrying out any work on
the tool.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.
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