Makita XT252T Use and Care Manual download pdf (Page 8)

OPERATION

014066

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

fastening torque and fastening time is shown in the

figures.

120

100

01.02.03.0

M14

M12

M10

(M14)

(M12)

(M10)

(M8)

Standard bolt

N.m

Fastening torque

Fastening time

(S)

Proper fastening torque

(ft.lbs)

(14)

(29)

(43)

(58)

(72)

(87)

(9/16")

(1/2")

(3/8")

(5/16")

009220

120

(87)

100

(72)

(58)

(43)

(29)

(14)

01.02.03.0

M12

M10

(M12)

(M10)

(M8)

N.m

Fastening torque

Fastening time

Proper fastening torque

(ft.lbs)

High tensile bolt

(S)

(1/2")

(3/8")

(5/16")

009221

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 screw M8 or smaller, choose a proper

hammer force and carefully adjust pressure on the

switch trigger so that the screw is not damaged.

• Hold the tool pointed straight at the screw.

•

If the hammering 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 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.

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

reduction 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 except for the

following troubleshooting related to the light.

Cleaning

From time to time wipe off the outside (tool body) of the

tool using a cloth dampened in soapy water.

CAUTION:

•

Never use gasoline, benzine, thinner, alcohol or the

like. Discoloration, deformation or cracks may result.

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Makita XT252T Use and Care Manual Page 8

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