Hitachi DS12DVF3 — руководство по ремонту: разборка и сборка устройства [17/34]

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10. 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 the danger of accidental turning of the motor.

10-1. Precautions in Disassembly and Reassembly

The [Bold] numbers in the description below correspond to the item numbers in the Parts List and exploded

assembly diagram.

10-1-1. Disassembly

(1) Removal of the Hook Ass'y [39]

Remove the Special Screw M5 [44] with a flat-blade screwdriver or a coin. Remove the Hook Ass'y [39] and

the Hook Spring [43].

(2) Removal of Housing (A). (B) Set [30]

First, align the drill mark " " at the Clutch Dial [4] with the triangle mark at Housing (A). (B) Set [30].

Remove the eight Tapping Screws (W/Flange) D3 x 16 (Black) [26] 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] and the Clutch Dial [4].

(4) Removal of the Drill Chuck 10TLRK-N (W/O Chuck Wrench) [2] (See Fig. 5.)

(a) Turn the Motor [25] counterclockwise (when viewed from the rear) and remove it from the Rear Case [14].

Remove the Shift Knob [36] from the Shift Arm [16]. Take care not to remove the Shift Arm [16] from the

Rear Case [14] in this operation.

(b) Attach the motor spacer (an accessory of the special repair tool J-292, Code No. 316-379) to the assembly

of the Drill Chuck 10TLRK-N (W/O Chuck Wrench) [2], Clutch Dial [4], Front Case [9] and Rear Case [14]

then mount it in special repair tool J-292 clamped in the vise as illustrated in Fig. 5. In this operation, check

that the pinion press-fitted in the special repair tool J-292 and Planet Gear (A) Set [21] are engaged

properly.

(d) Turn the sleeve of the Drill Chuck 10TLRK-N (W/O Chuck Wrench) [2] counterclockwise (when viewed

from the front) to fully open the jaws of the Drill Chuck 10TLRK-N (W/O Chuck Wrench) [2]. Turn the

Special Screw (Left Hand) M5 x 27 [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 10TLRK-N (W/O Chuck Wrench) [2] as illustrated in

Fig. 5 and remove the Drill Chuck 10TLRK-N (W/O Chuck Wrench) [2] by turning the hexagonal bar

wrench counterclockwise.