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(4) Disassembly of the gear unit
(a) Remove the Cap [4] from the Front Case [9]. Take care not to remove the Nut [6] from the Front Case [9]
in this operation.
(b) Turn the Motor [28] counterclockwise when viewed from the rear and remove it from the Rear Case [17].
(c) Remove the Shift Arm [19] from the Rear Case [17], and remove the Shift Knob [38] from the Shift Arm [19].
(d) Remove the Screw Set D3 x 12 (4 pcs.) [18] connecting the Front Case [9] and the Rear Case [17].
(e) Remove Washer (A) [16], Planet Gear (C) Set (3 pcs.) [15], Carrier [14], Ring Gear [13], Lock Ring [12],
six Steel Balls D5 [11] and six Rollers [10] in sequence from the Front Case [9]. Take care not to lose the
six Steel Balls D5 [11] and the six Rollers [10] in this operation.
(5) Removal of the Spring [7] and the Thrust Washer [8]
Turn the Nut [6] counterclockwise and remove it from the Front Case [9], then remove the Spring [7] and
Thrust Washer [8] from the Front Case [9].
(Note) Do not disassemble the Front Case [9].
(6) Disassembly of the power supply unit
(Note) Do not remove the fin secured to the DC-Speed Control Switch [35] with a screw.
Remove the two Machine Screws (W/Sp. Washer) M4 x 6 or 8 [31], and take the Motor [28] and the Motor
Spacer [27] apart. Disconnect the Internal Wires [33] and [34] from the Motor [28] with a soldering iron, then
disconnect them from the DC-Speed Control Switch [35] with a soldering iron in the same manner.
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. 5.)
Fig. 5
Motor Spacer [27]
Motor [28]
Internal Wire (Red) [34]
Machine Screw
(W/Sp. Washer)
M4 x 6 or 8 [31]
Internal Wire (Red) [34]
Internal
Wire (Black) [33]
Internal Wire (Black) [33]
Ferrite Core [37]
DC-Speed Control Switch [35]
Terminal Support (A) [40]
