Operation; Maintenance - Makita TW0350 Bedienungsanleitung

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
300
250
(3/4"X3-1/8")
200
M16X80
150
(5/8"X3-1/8")
100
M12X80
(1/2"X3-1/8")
50
0
0.5 1 1.5
Fastening time (S)
004009
High tensile bolt
300
250
M16(F10T)
(5/8")
200
M12X80
150
(1/2"X3-1/8")
100
50
0
1 2 3 4
Fastening time (S)
004010
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 M12 or smaller, carefully
•
adjust pressure on the switch so that the screw is
not damaged.
Hold the tool pointed straight at the bolt or nut
•
without applying excessive pressure on the tool.
If you fasten the bolt for a time longer than shown in
•
the figures, the bolt or the socket may be
overstressed, damaged, etc. Before starting your
job, always perform a test operation to determine
the proper fastening time for your bolt. Especially
for the bolt over than M12, perform the above test
M20X80
2 2.5 3
M16
(5/8")
M12
(1/2")
5 6
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. 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.
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.
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.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and
•
unplugged before attempting to perform inspection
or maintenance.
Never use gasoline, benzine, thinner, alcohol or the
•
like. Discoloration, deformation or cracks may
result.
Replacing carbon brushes
Fig.4
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
Fig.5
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.
5