Hitachi WH 14DAF2, Технические данные и руководство по обслуживанию

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10. REPAIR GUIDE
WARNING: Without fail, remove the battery from the main body before starting repair or maintenance
work. Because the tool is cordless, if the battery is left in and the switch is activated
inadvertently, the motor will start rotating unexpectedly, which could cause serious injury.
10-1. Precautions in Disassembly and Reassembly
The [Bold] numbers correspond to the item numbers in the Parts List and the exploded assembly diagram.
10-1-1. Disassembly
(1) Removal of Gear Box (B) Ass'y [1]
Remove the four Tapping Screws (W/Sp. Washer) D4 x 40 [6] that connect the Hammer Case [7] with
Housing (A).(B) Set [31] . Remove the Hammer Case [7] , the Inner Cover [23] and the Damper [24] together
from Housing (A).(B) Set [31] . Remove the Retaining Ring [25] . Then Gear Box (B) Ass'y [1] can be
removed.
(2) Removal of the Hook Ass'y (W/Light) [35]
Remove Special Screw (A) M5 [43] with a flatblade screwdriver or a coin then remove the Hook Ass'y
(W/Light) [35] and the Hook Spring [42] .
(3) Removal of housing (B)
Remove the seven Tapping Screws (W/Flange) D4 x 20 (Black) [29] from the main body to remove housing
(B).
(4) Remove the DC-Speed Control Switch [32] , the Fin [41] and the Motor [26] together. Remove the Pushing
Button [33].
(5) Disassembly of the switch ass'y
Disconnect the Internal Wire (Red) 115L [27] , the Internal Wire (Black) 65L [28] from the DC-Speed Control
Switch [32] with a soldering iron. Remove the Machine Screw (W/Sp. Washer) M3 x 4 [40] to remove the Fin
[41] from the FET of the DC-Speed Control Switch [32] .
NOTE: Do not disconnect the three FET internal wires soldered to the DC-Speed Control Switch [32].
(6) Removal of the Guide Sleeve [5]
By following the procedure shown in Figs. 7-1 to 7-4, you can remove the Retaining Ring [2] , Washer (D) [3] ,
Guide Spring [4] and the Guide Sleeve [5] in this order. Be sure not to lose the Steel Ball D3.5 [8] in Anvil (B)
[9] .