Maintenance - Makita DTW1001 Betriebsanleitung

Model DTW800
Proper fastening torque for standard bolt
2
N•m
(kgf•cm)
400
(4080)
200
(2040)
0
0 1
1. Fastening time (second) 2. Fastening torque
Proper fastening torque for high tensile bolt
2
N•m
(kgf•cm)
800
(8160)
600
(6120)
400
(4080)
200
(2040)
0
0 1 2
1. Fastening time (second) 2. Fastening torque
M24(1")
M24(1")
M20(3/4")
M20(3/4")
2 3
1
M22(7/8")
M22(7/8")
M20(3/4")
M20(3/4")
M16(5/8")
M16(5/8")
3 4 5 6
1
NOTE: Hold the tool pointed straight at the bolt or nut.
NOTE: Excessive fastening torque may damage the
bolt/nut or impact socket. Before starting your job,
always perform a test operation to determine the
proper fastening time for your bolt or nut.
NOTE: If the tool is operated continuously until the bat-
tery 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. Impact socket
• Failure to use the correct size impact socket
will cause a reduction in the fastening torque.
• A worn impact 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 some-
what 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.
6. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.

MAINTENANCE

CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
11 ENGLISH