Makita DTD137 Instruction Manual page 10

Hook
► Fig.12: 1. Groove 2. Hook 3. Screw
The hook is convenient for temporarily hanging the tool.
This can be installed on either side of the tool.
To install the hook, insert it into a groove in the tool
housing on either side and then secure it with a screw.
To remove, loosen the screw and then take it out.
OPERATION
► Fig.13
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.
Model DTD137
Standard bolt
N m
140
(kgf cm)
(1,428)
120
(1,224)
100
(1,020)
80
(816)
60
(612)
40
(408)
M8
20
(204)
0 1.0
Fastening time (S)
High tensile bolt
N m
(kgf cm) 200
(2,040)
180
(1,836)
160
(1,632)
140
(1,428)
120
(1,224)
100
(1,020)
80
(816)
M8
60
(612)
40
(408)
20
(204)
0
Fastening time (S)
M16
M14
M16
M12
M14
M10
M12
M10
M8
2.0 3.0
M14
M14
M12
M10
M12
M10
M8
1.0 2.0 3.0
Model DTD148
Standard bolt
N m
140
(kgf cm)
(1,428)
120
(1,224)
100
(1,020)
80
(816)
60
(612)
40
(408)
20
(204)
0
High tensile bolt
N m
200
(kgf cm)
(2,040)
180
(1,836)
160
(1,632)
140
(1,428)
120
(1,224)
100
(1,020)
80
(816)
60
(612)
40
(408)
20
(204)
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.
• When fastening M8 or smaller screw, choose a
proper impact force and carefully adjust pres-
sure on the switch trigger so that the screw is
not damaged.
• Hold the tool pointed straight at the screw.
• 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.
10 ENGLISH
M16
M14
M16
M12
M14
M10
M12
M8
M10
M8
1.0 2.0
Fastening time (S)
M14
M14
M12
M12
M10
M10
M8
M8
1.0 2.0 3.0
Fastening time (S)