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10-1-2. Reassembly
Reassembly can generally be carried out as the reverse of the disassembly procedure, with some items to be
noted as follows.
(1) Reassembly of the power supply unit
(a) Be sure to perform wiring connections as indicated in the wiring diagram. (See Fig. 7.)
Fig. 7
Motor Spacer [30]
Motor [31]
Internal Wire (Red ) [37]
Machine Screw
(W/SP. Washer)
M4 x 6 [34]
Internal Wire (Red) [37]
Internal
Wire (Black) [36]
Internal Wire (Black) [36]
Ferrite Core [40]
DC-speed Control Switch [38]
Terminal Support (A) [43]
(b) Pay attention to the polarity of the Motor [31] when soldering Internal Wires (Black) [36] and (Red) [37] to
the Motor [31]. The red-marked side of the Motor [31] is positive. (See Fig. 8.)
(c) Apply grease (Hitachi Motor Grease No. 29, Code No. 930035 is recommended) to the pinion press-fitted
on the Motor [31] shaft.
Fig. 8
Positive side
Red marking
Negative side
[30]
[31]
