Bedienungsanleitung Hitachi WR8DH (Seite 10 von 54) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch)

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A worn or deformed hex. or square-holed socket

will not give an adequate tightness for fitting to the

nut or anvil, consequently resulting in loss of

tightening torque.

Pay attention to wear of socket hole, and replace

before further wear has developed.

Finally, install the socket prescribed in Item 4. The

section on “Optional Accessories” details the

relationship between bolt sizes and sockets. Sockets

are named according to the dihedral width of the

hexagonal hole.

4. Installing a socket

Select the socket to be used.

䢇 Pin, O-ring type (Fig. 4 and 5)

(1) Align the hole in the socket with the hole in the

anvil and insert the anvil into the socket.

(2) Insert the pin into the socket.

(3) Attach the ring to the groove on the socket.

䢇 Plunger type (Fig. 6)

Align the plunger located in the square part of the

anvil with the hole in the hex. socket. Then push

the plunger, and mount the hex. socket on the anvil.

Check that the plunger is fully engaged in the hole.

When removing the socket, reverse the sequence.

HOW TO USE

1. Check the rotational direction

The bit rotates clockwise (viewed from the rear

side) by pushing the R-side of the push button.

The L-side of the push button is pushed to turn

the bit counterclockwise. (See Fig. 7). (The

and

marks are engraved on the body.)

CAUTION

The push button can not be switched while the

impact driver is turning. To switch the push button,

stop the impact driver, then set the push button.

2. Switch operation

䡬 When the trigger switch is depressed, the tool

rotates. When the trigger is released, the tool stops.

䡬 The rotational speed can be controlled by varying

the amount that the trigger switch is pulled. Speed

is low when the trigger switch is pulled slightly and

increases as the trigger switch is pulled more.

3. Tightening and loosening bolts

A hex socket matching the bolt or nut must first

be selected. Then mount the socket on the anvil,

and grip the nut to be tightened with the hex socket.

Holding the wrench in line with the bolt, press the

power switch to impact the nut for several seconds.

If the nut is only loosely fitted to the bolt, the bolt

may turn wit the nut, therefore mistaking proper

tightening. In this case, stop impact on the nut and

hold the bolt head with a wrench before restarting

impact, or manually tighten the bolt and nut to

prevent them slipping.

4. Number of bolt tightened possible

(with one charge (EB9B))

Please refer to the table below for the number of

bolt tightened possible with one charge.

These values may vary slightly, according to

surrounding temperature and battery characteristics.

NOTE

The use of the battery EB9H in a cold condition

(below 0 degree Centigrade) can sometimes result

in the weakened tightening torque and reduced

amount of work. This, however, is a temporary

phenomenon, and returns to normal when the

battery warms up.

Tightening time: sec

(Steel plate thickness

t = 10 mm)

Fig. 12

Tightening time: sec

(Steel plate thickness

t = 10 mm)

Fig. 13

Tightening time: sec

(Steel plate thickness

t = 25 mm)

Fig. 14

Tightening torque

0123

200

400

600

800

1000

kg–cm

M8 × 30

0123

200

400

600

800

1000

kg–cm

M10 × 30

0123

200

400

600

800

1000

1200

kg–cm

M12 × 45

High tension bolt

Ordinary bolt

High tension bolt

Ordinary bolt

High tension bolt

Ordinary bolt

Bolt used No. of tightenings

High tension bolt

Approx. 120

M12 × 45

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