Hitachi DB 10DL Technical Data And Service Manual page 14

Fig. 1-1 Hold the body and adjust the gap of the
Retaining Ring [2] to the groove of socket, then insert a
small flat-blade screwdriver into the groove at an angle.
Socket
Washer (D) [3]
Retaining Ring [2]
Fig. 1-3 Slide the small flat-blade screwdriver under
one side of the gap of the Retaining Ring [2].
(4) Disassembly of the power supply unit
Unsolder the Internal Wire (Black) [32] and the Internal Wire (Red) [33] of the Motor [30] with a soldering
iron and disconnect them from the Motor [30]. Disconnect the Internal Wire (Black) [32] and the Internal
Wire (Red) [33] of the Motor [30] from the DC-Speed Control Switch [35] with a soldering iron in the same
manner.
The internal wires of the DC-Speed Control Switch [35] (two LEDs are connected with the internal wires)
and the Controller (B) [39] are soldered to each terminal.
Unsolder the internal wire (red) ((B+) terminal side of the DC-Speed Control Switch [35]), internal wire
(white) ((B-) terminal side of the DC-Speed Control Switch [35]) and internal wire (blue) of the DC-Speed
Control Switch [35] with a soldering iron and disconnect them from the DC-Speed Control Switch [35].
Before unsoldering the internal wire (blue), be sure to remove the heat shrinkable tube.
NOTE: Do not remove the DC-Speed Control Switch [35] and the Controller (B) [39].
Small flat-blade
screwdriver
Guide Sleeve (A) [5]
Fig. 1
-11-
Fig. 1-2 Press down Washer (D) [3] with the small
flat-blade screwdriver.
Fig. 1-4 Slowly raise the Retaining Ring [2] using the
end face of Guide Sleeve (A) [5] as a fulcrum.