Makita 6906 Instrukcja obsługi - Strona 5

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FUNCTIONAL DESCRIPTION

CAUTION:

• Always be sure that the tool is switched off and

unplugged before adjusting or checking function on the

tool.

Switch action (Fig. 1)

CAUTION:

• Before plugging in the tool, always check to see that

the switch trigger actuates properly and returns to the

"OFF" position when released.

• Change the direction of rotation only when the tool

comes to a complete stop. Changing it before the tool

stops may damage the tool.

The switch is reversible, providing either clockwise or

counterclockwise rotation. To start the tool, simply pull the

lower part of the switch trigger for clockwise or the upper

part for counterclockwise. Release the switch trigger to

stop.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched off and

unplugged before carrying out any work on the tool.

Installing side grip (Fig. 2)

For 6906 only

Fit the side grip into the groove on the middle of the

hammer case and fasten securely.

Selecting correct socket

Always use the correct size socket for bolts and nuts. An

incorrect size socket will result in inaccurate and

inconsistent fastening torque and/or damage to the bolt or

nut.

Installing or removing socket

1. For socket without O-ring and pin (Fig. 3)

To install the socket, push it onto the anvil of the tool

until it locks into place.

To remove the socket, simply pull it off.

2. For socket with O-ring and pin (Fig. 4)

Move the O-ring out of the groove in the socket and

remove the pin from the socket. Fit the socket onto

the anvil of the tool so that the hole in the socket is

aligned with the hole in the anvil. Insert the pin

through the hole in the socket and anvil. Then return

the O-ring to the original position in the socket groove

to retain the pin. To remove the socket, follow the

installation procedures in reverse.

OPERATION

For 6906 only

Always use the side grip (auxiliary handle) and firmly hold

the tool by side grip and switch handle during operations.

The proper fastening torque may differ depending upon

the kind or size of the bolt, the material of the workpiece to

be fastened, etc. The relation between fastening torque

and fastening time is shown in the figures.

N m (kg cm)

700

(7140)

600

(6120)

500

(5100)

400

(4080)

300

(3060)

200

(2040)

100

(1020)

005306

Hold the tool firmly and place the socket over the bolt or

nut. Turn the tool on and fasten for the proper fastening

time.

NOTE:

• Hold the tool pointed straight at the bolt or nut.

• Excessive fastening torque may damage the bolt/nut or

socket. Before starting your job, always perform a test

operation to determine the proper fastening time for

your bolt or nut.

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. Voltage

Voltage drop will cause a reduction in the fastening

torque.

2. Socket

• Failure to use the correct size socket will cause a

reduction in the fastening torque.

• A worn 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

somewhat 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.

Rated voltage

For 6906

90% of rated voltage

Rated voltage

For 6905B

90% of rated voltage

(S)