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9. 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.
9-1. Precautions in Disassembly and Reassembly
The [Bold] and <Bold> numbers in the descriptions below correspond to the item numbers in the Parts List and
exploded assembly diagram. ([Bold]: DS 18DVF3, <Bold>: DS 14DVF3)
9-1-1. Disassembly
(1) Removal of the Hook Ass'y [37] <38>
Remove Special Screw (A) M5 [42] <43> with a flat-blade screwdriver or a coin. Remove the Hook Ass'y
[37] <38> and the Hook Spring [41] <42>.
(2) Removal of Housing (A). (B) Set [29] <30>
First, align the drill mark " " at the Clutch Dial [4] <4> with the triangle mark at Housing (A). (B) Set [29]
<30>. Remove the eight Tapping Screws (W/Flange) D3 x 16 (Black) [26] <27> secured to the main body.
Gently open housing (A) and housing (B) while holding their battery loading sections.
(3) After housing (B) has been removed, all the internal parts, assembled or separate, can be taken out as they
are. Lift the entire contents from housing (A) while holding the Motor [25] <25> and the Clutch Dial [4] <4>.
(4) Removal of the Drill Chuck [2] <2> (See Fig. 2.)
(a) Turn the Motor [25] <25> counterclockwise (when viewed from the rear) and remove it from the Rear Case
[14] <14>. Remove the Shift Knob [35] <36> from the Shift Arm [16] <16>. Take care not to remove the
Shift Arm [16] <16> from the Rear Case [14] <14> in this operation.
(b) Attach the motor spacer (an accessory of the special repair tool J-342, Code No. 324-582) to the assembly
of the Drill Chuck [2] <2>, Clutch Dial [4] <4>, Front Case [9] <9> and Rear Case [14] <14> then mount it
in special repair tool J-342 clamped in the vise as illustrated in Fig. 2. In this operation, check that the
pinion press-fitted in the special repair tool J-342 and Planet Gear (A) Set [21] <21> are engaged properly.
(c) Secure the Slide Ring Gear [17] to the Front Case [9] <9> side with the Shift Arm [16] <16>.
(d) Turn the sleeve of the Drill Chuck [2] <2> counterclockwise (when viewed from the front) to fully open the
jaws of the Drill Chuck [2] <2>. Turn the Special Screw (Left Hand) M6 x 23 [1] <1> clockwise and remove
it. (Note that the special screw is left-hand threaded.)
(e) Fit the hexagonal bar wrench M10 into the Drill Chuck [2] <2> as illustrated in Fig. 2 and remove the Drill
Chuck [2] <2> by turning the hexagonal bar wrench counterclockwise.
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