Repair Guide; Precautions In Disassembly And Reassembly - Hitachi DS 14DVB Technical And Service Manual

10. REPAIR GUIDE

Be sure to remove the batteries from the main body before servicing. Inadvertent triggering of the switch with the
battery connected will result in a 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 for the Model DS 14DVB.
10-1-1. Disassembly
(1) Removal of the Drill Chuck [2] (See Fig. 4.)
Remove the Drill chuck [2] of the fully assembled main body in accordance with the following procedures.
(a) Fully open the jaws of the Drill Chuck [2], and turn the Special Screw (Left Hand) M6 x 23 [1] clockwise
and remove it. Take care that it is left-hand threaded.
(b) Fix the hexagonal bar wrench M10 into the Drill Chuck [2] as indicated in Fig.4. Next, apply a Wrench
14 mm (Special repair tool, Code No. 873929) to the flat surfaces on the spindle to hold it steady, and
remove it by turning counterclockwise. If it is difficult to loosen, use a pipe extension or similar tool.
Wrench 14 mm
(2) Removal of Housing (B) [32]
First, align the number "22" on the Cap [4] with the triangle mark on Housing (A). (B) Set [32].
Remove the eight Tapping Screws (W/Washers) D3 x 16 [29] secured to the main body. Gently open Housing
(A). (B) Set [32] while holding their battery loading sections.
(3) After Housing (B) [32] has been removed, all the internal parts, assembled or separate, can be taken out as
they are. Lift the entire contents from Housing (A) [32] while holding the Motor [28] and Cap [4].
Drill Chuck [2]
Hexagonal bar wrench M10
Flat surface
Fig. 4
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