Repair Guide; Precautions On Disassembly And Reassembly - Hitachi DV 14DSDL Service Manual

Be sure to remove the storage battery from the main body before servicing. Inadvertent triggering of the
switch with the storage battery connected poses the danger of the motor being accidentally turned on.

1. Precautions on disassembly and reassembly

[Bold] numbers in the descriptions below correspond to item numbers in the Parts List and exploded
assembly diagram for the Models DV 14DSDL and DV 18DSDL.
1. Adjust the clutch dial to "
2. Removal of exterior parts
(1) Remove the Truss Hd. Screw M4 (Black) [42]. Remove the Hook [43] for easy disassembly work,
although disassembly can be done without removing the Hook [43].
(2) Remove the four Tapping Screws (W/Sp. Washer) D3 x 20 (Black) [3] from the front side of the body,
and then remove the Cover (A) [4].
(3) First remove the Brush Cap [40], and then use a flat-blade screwdriver to pry off the Carbon Brush 5 x
6 x 11.5 [39] (where the collars are positioned). Be sure to remove the Brush Caps [40] and Carbon
Brushes 5 x 6 x 11.5 [39] on both sides.
3. Disassembly of the main unit
Remove the eleven Tapping Screws (W/Flange) D3 x 16 (Black) [51] from the main unit. While holding the
battery chamber of the Housing (A).(B) Set [41], gently open the Housing (A).(B) Set [41]. The internal
parts can then be removed in the fully assembled state or individually. All parts can be easily removed by
raising Dial Holder (B) [6]. The parts are separated into the drive unit, Click Spring [11], Armature and
Pinion Set [36], Magnet [37], Pushing Button [48], power supply unit, Shift Knob [49], and Strap (Black)
[53].
4. Disassembly of the gear unit
(1) Turn the Motor Spacer [35] counterclockwise (as viewed from the rear of the Armature and Pinion Set
[36]) until a clicking sound is heard, and then remove the Motor Spacer [35] from the Rear Case [21].
(2) Remove the Screw Set D2 x 3.5 (2 pcs.) [23] from the Rear Case [21], and then remove the Shift Arm
[22] from the Gear Box Ass'y [5]. Do not deform the Shift Arm [22] by applying excessive force.
(3) Disassembly of the deceleration mechanism
Turn Washer (B) [34] mounted in the Rear Case [21] counterclockwise to remove it.
Take out the First Ring Gear [33], Planet Gear (A) Set (4 pcs.) [32], Needle Bearing Set (4 pcs.) [31],
Pinion (B) [30], Planet Gear (B) Set (4 pcs.) [26], Pinion (C) [25], and Slide Ring Gear [27] in this order.
Then remove the Screw Set M3 x 12 (4 pcs.) [24] that connects the Front Case [10] and Rear Case
[21]. Take out Washer (A) [20], the Planet Gear (C) Set (5 pcs.) [18], Carrier [17], Ring Gear [19],
Lock Cam [16], Needle Roller Set (6 pcs.) [15], Lock Ring (A) [14], Washer (A) [13], and Pin Set (6
pcs.) [12] from the Front Case [10] in this order.
NOTE: Do not lose any small parts. Pay attention to the Needle Roller Set (6 pcs.) [15] and Pin
Set (6 pcs.) [12] in this operation.

REPAIR GUIDE

Disassembly
" with the triangle mark of the main body.
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