Hitachi DV18DL Instruction Manual - Page 21

(4) Adjust the Front Cap [4] to " ". (5) Disassembly of the main unit Remove the ten Tapping Screws (W/Flange) D3 x 16 (Black) [36] from the main unit. Holding the battery chamber of Housing (B) [38] , gently remove Housing (B) [38] . Then the inside parts can be removed in an assembled or single state. All the parts can be easily removed by raising the Front Cap [4] . Parts are separated into the drive unit (an assembly of the armature and the gear unit), power supply unit, Pushing Button [45] and Strap (Black) [57] . (6) Disassembly of the drive unit (a) Remove the Front Cap [4] and the Click Spring [12] from the Front Case [11] . NOTE: Do not remove the Nut [6] from the Front Case [11] in this step. (b) Remove the Shift Arm [21] from the Gear Box Ass'y [3] and remove the Shift Knob [41] from the Shift Arm [21] . Do not deform the Shift Arm [21] by applying excessive force. (c) Turn the Motor Spacer [30] until a click is heard counterclockwise viewing from the rear of the Armature and Pinion Set [31] . Remove the Motor Spacer [30] from the Rear Case [20] . Thus the armature unit is separated from the gear unit. (7) Disassembly of the armature unit (a) Removal of the Magnet [32] Note that the magnetic force of the Magnet [32] is strong. Hold the Motor Spacer [30] securely and pull toward the back of the Armature and Pinion Set [31] to remove. NOTE: Be careful that the ball bearing and the washer behind the Armature and Pinion Set [31] may be attracted to the Magnet [32] and come off the Armature and Pinion Set [31] when removing the Magnet [32] . (b) Removal of the Motor Spacer [30] Remove the Motor Spacer [30] from the Armature and Pinion Set [31] . If it is too hard to remove, support the Motor Spacer [30] and press down the tip of the armature shaft of the Armature and Pinion Set [31] with a hand press. (8) Disassembly of the gear unit (a) Disassembly of the deceleration mechanism Turn Washer (B) [29] mounted in the Rear Case [20] counterclockwise to remove. Take out the First Ring Gear [28] , Planet Gear (A) Set (4 pcs.) [27] , Pinion (B) [26] , Planet Gear (B) Set (4 pcs.) [25] , Pinion (C) [24] and Slide Ring Gear [23] in order. Then remove the Screw Set M3 x 12 (4 pcs.) [22] that connects the Front Case [11] with the Rear Case [20] . Take out Washer (D) [19] , Planet Gear (C) Set (5 pcs.) [18] , Carrier [17] , Ring Gear [16] , Pin Set (6 pcs.) [13] , Lock Ring [15] and Washer (A) [14] from the Front Case [11] in order. NOTE: Do not lose small parts. Pay special attention to the Pin Set (6 pcs.) [13] , because they are apt to roll. (b) Removal of the Switch Plate [5] Turn the switch flange so as to fit the projection of the switch flange to the recess of the Switch Plate [5] , then remove the Switch Plate [5] from the Front Case [11] . (See Fig. 4.) --- 18 ---