Manual Makita DTD171 (page 12 of 22) (English, German, Dutch, Danish, French, Italian, Portuguese, Turkish, Spanish)

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12 ENGLISH

Proper fastening torque for high tensile bolt

M14

M12

M14

M12

M10

200

180

160

140

120

100

0123

(2040)

(1836)

(1632)

(1428)

(1224)

(1020)

(816)

(612)

(408)

(204)

N•m

(kgf•cm)

1. Fastening time (second) 2. Fastening torque

Hold the tool rmly 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.

NOTICE: If you use a spare battery to continue

the operation, rest the tool at least 15 min.

NOTE: Use the proper bit for the head of the screw/

bolt that you wish to use.

NOTE: When fastening M8 or smaller screw, choose

a proper impact force and carefully adjust pressure on

the switch trigger so that the screw is not damaged.

NOTE: Hold the tool pointed straight at the screw.

NOTE: If the impact force is too strong or you tighten

the screw for a time longer than shown in the gures,

the screw or the point of the driver bit may be over-

stressed, 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 coefcient 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 coefcient, the class

of bolt and the bolt length.

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.

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.

OPTIONAL

ACCESSORIES

CAUTION: These accessories or attachments

are recommended for use with your Makita tool

specied in this manual. The use of any other

accessories or attachments might present a risk of

injury to persons. Only use accessory or attachment

for its stated purpose.

If you need any assistance for more details regard-

ing these accessories, ask your local Makita Service

Center.

• Driver bits

• Socket bits

• Bit piece

• Hook

• Tool hanger

• Plastic carrying case

• Makita genuine battery and charger

• Battery protector

NOTE: Some items in the list may be included in the

tool package as standard accessories. They may

differ from country to country.

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Makita DTD171 Manual

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