Hitachi D10VG Instruction Manual - Page 13

English ⅜ To remove the chuck from the drill, open the chuck jaws as far as possible and turn out the locking screw (left hand thread). This screw locks the chuck to the spindle. And hold the drill so that only the chuck rests firmly and squarely on the edge of a solid bench. Install the hex. bar wrench into the chuck. Turn the chuck until the wrench is at about a 30° angle to the bench top and strike the wrench sharply with a hammer so the chuck turns in the counterclockwise direction (viewed from the front side). This should loosen the chuck from the spindle which has a right hand thread and you will be able to remove the chuck by hand. CAUTION: If the chuck cannot be removed by striking the wrench, don't strike the wrench forcibly and send the drill to a HITACHI AUTHORIZED SERVICE CENTER. (2) Attaching the angle unit. ⅜ After removing the chuck, engage the coupling to the drill spindle. Fit the joint sleeve to the gear cover, attach the angle unit to the other end of the joint sleeve, and turn the angle unit slightly in either direction so the hex. hole in the coupling engages the hex. portion of the angle unit spindle. Adjust the direction of the angle unit and tighten the joint sleeve by clamping bolts. Tighten two clamping bolts equally and gradually in turn with a torque of 61-70 Inlbs. (70-80kg-cm) (extent of force which can be subjected by only a wrist with the open end wrench provided to tight clamping bolts.). (Fig. 8) ⅜ To operate the angle unit at low speed, attach the chuck to the angle unit spindle at the side marked "LOW" and secure the locking screw. At this setting, the drilling speed is decreased to about 70% and the drilling torque increased to about 150%. (Fig. 9) ⅜ To operate the angle unit at high speed, attach the chuck to the angle unit spindle at the side marked "HIGH" and secure the locking screw. At this setting, the drilling speed is increased to about 150% and the Hex. Bar Wrench Locking Screw Loosen Fig. 7 Angle Unit Joint Sleeve Coupling Clamping Bolt Fig. 8 Low Speed Fig. 9 High Speed Fig. 10 13