Replacing Carbon Brushes - Makita BTD042 Manual De Instrucciones

High tensile bolt
N·m
(ft·lbs)
60
(43)
50
(36)
40
(29)
30
(21)
20
(14)
10
(7)
0
1.0
50
(25)
1. Number of impacts
2. Dial setting
001273
NOTE:
Hold the tool pointed straight at the screw.
•
If 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 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 socket adapter
somewhat reduces the fastening force of the tool.
Compensate by fastening for a longer period of
time.
5. Type of materials to be fastened, the manner of
holding the tool and the tool speed will affect the
torque.
M10 (3/8")
(M10)
M8 (5/16")
(M8)
M6 (1/4")
(M6)
2.0 3.0 (S)
100 150 *1
(50) (75) (*2)
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and the
•
battery cartridge is removed 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

001145
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.
001268
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.
ACCESSORIES
CAUTION:
These accessories
•
recommended for use with your Makita tool
specified in this manual. The use of any other
accessories or attachments might present a risk of
injury to persons.
attachment for its stated purpose.
8
1. Limit mark
1
1. Brush holder cap
1
2. Screwdriver
2
or attachments
Only use accessory or
are