Makita DTS141 Manual De Instrucciones página 10

OPERATION
► 1 . Vent
CAUTION:
• Never obstruct the air vents on the side of the
tool for cooling down oil unit and motor during
operation. Failure to do so may cause the tool
excessive heat and damage.
The proper fastening torque may differ depending upon
the kind or size of the screw/bolt, the material of the
workpiece to be fastened, etc. The relation between fas-
tening torque and fastening time is shown in the figures.
Standard bolt
N m
20
(ft lbs)
(15)
15
(11)
10
(7)
5
(4)
0
Fastening time (S)
1
M8(5/16")
M8(5/16")
M6(1/4")
M6(1/4")
1.0 2.0
High tensile bolt
N m
20
(ft lbs)
(15)
15
(11)
10
(7)
5
(4)
0
Hold the tool firmly and place the point of the driver bit
in the screw head. Apply forward pressure to the tool to
the extent that the bit will not slip off the screw and turn
the tool on to start operation.
NOTE:
• Use the proper bit for the head of the screw/bolt
that you wish to use.
• Choose a proper impact force and carefully
adjust pressure on the switch trigger so that the
screw is not damaged.
• Hold the tool pointed straight at the screw.
• For tightening bolt, select the soft or T mode
impact force grade.
• If the impact force is too strong you tighten
the screw for a time longer than shown in the
figures, the screw or the point of the driver bit
may be overstressed, stripped, damaged, etc.
Before starting your job, always perform a test
operation to determine the proper fastening time
for your screw.
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. Driver bit or socket bit
Failure to use the correct size driver bit or socket
bit 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 fasten-
ing torque will differ according to the diame-
ter 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 manner of holding the tool or the material
of driving position to be fastened will affect the
torque.
5. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.
10 ENGLISH
M6(1/4")
(M6)(1/4")
1.0 2.0
Fastening time (S)