Hitachi DV18DL Instruction Manual - Page 20

10. REPAIR GUIDE Be sure to remove the storage batteries from the main body before servicing. Inadvertent triggering of the switch with the storage battery connected will result in danger of accidental turning of the motor. 10-1. Precautions in Disassembly and Reassembly The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and the exploded assembly diagram for the Model DV 18DL, and the numbers to those in the Parts List and the exploded assembly diagram for the Model DV 14DL. 10-1-1. Disassembly (1) Removal of the Hook Ass'y [53] or the Hook Ass'y (W/Light) [55] Remove Special Screw (A) M5 [59] [57] with a flat-blade screwdriver or a coin. Remove the Hook Ass'y [53] or the Hook Ass'y (W/Light) [55] and the Hook Spring [58] . (2) Removal of the Carbon Brushes 5 x 6 x 11.5 [34] Remove the Brush Cap [35] first then pry the Carbon Brush 5 x 6 x 11.5 [34] off with a flat-blade screwdriver (at the position of collars). Remove the Brush Caps [35] and the Carbon Brushes 5 x 6 x 11.5 [34] at both sides. (3) Removal of the Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] Perform the following steps (a) and (b) with the main unit mounted in the vise for removal of the Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] . At this time, it is recommended to sandwich a cloth between the main unit and the vise to prevent Housing (A).(B) Set [38] from being scratched. (a) Fully open the jaws of the Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] and remove the Special Screw (Left Hand) M6 x 23 [1] by turning clockwise (be careful that it is a left-handed screw). (b) Fix the hexagonal bar wrench M10 into the Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] as shown in Fig. 3 then turn it counterclockwise to remove the Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] . Hexagonal bar wrench Cloth Vise Fig. 3 --- 17 ---