Hitachi WR9DM2, WR12DM2 Installing the bit WH12DM2, WH9DM2, Removing the bit WH12DM2, WH9DM2

2.Installing the bit (WH12DM2, WH9DM2)

Always follow the following procedure to install

driver bit. (Fig. 13)

(1)Pull the guide sleeve back.

(2)Insert the bit into the hexagonal hole in the anvil.

(3)Release the guide sleeve and it returns to its origianl position.

CAUTION:

●If the guide sleeve does not return to its original position, then the bit is not installed properly.

3.Removing the bit (WH12DM2, WH9DM2)

Please do the opposite point on the method of installing bit.

4.Selecting the socket matched to the bolt (WR12DM2, WR9DM2)

Be sure to use a socket which is matched to the bolt to be tightened. Using an improper socket will not only result in insufficient tightening but also in damage to the socket or nut.

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.

Matching socket and bolt sizes are shown Tables 4, 5, 6 and 7. The numerical value of a socket designation denotes the side-to-side distance (H) of its hex. hole.

5.Installing a socket (Fig. 14, 15-1) (WR12DM2)

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.

6.Retaining ring type (Fig. 14, 15-2) (WR9DM2)

(1) Align the square portions of the socket and the anvil with each other.

(2) Make sure to firmly install the socket by pushing it all the way into the anvil.

(3) When removing the socket, pull it out of the anvil.

CAUTION:

English

Movement

Driver bit

Hexagonal

hole in the Guide

anvil sleeve

Fig. 13

Hexagonal socket Groove Anvil

Fig. 14

Hexagonal

socket Plunger

Hole Anvil

Fig. 15-1

Hexagonal

socket Hole

Anvil

Fig. 15-2

Please use the designated attachments which are listed in the operations manual and Hitachi’s catalog. Accidents or injuries could result from not doing so.

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