Hitachi DC 120VA, Технические данные и руководство по обслуживанию

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9. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and exploded
assembly diagram.
9-1. Disassembly
9-1-1. Handle cover section and carbon brush
(1) Loosen the Tapping Screw (W/Flange) D4 x 20 [48] and remove Handle (B) [49].
(2) Remove the Tapping Screw (W/Flange) D4 x 20 [48] from the Cord Clip [56] and remove the Cord [59]
together with the Cord Armor [57].
(3) Loosen the Machine Screw (W/Washer) M3.5 x 6 [52] on the Switch [53] and remove the Noise Suppressor
[54].
(4) Loosen the Machine Screw (W/Washer) M3.5 x 6 [52] on the Switch [53] and remove the internal wire with
terminal. Remove the Switch [53].
(5) Remove the Carbon Caps [36] with a flat-blade screwdriver to remove the Carbon Brushes [37].
9-1-2. Armature and stator ass'y
(1) Loosen the Tapping Screw (W/SP. Washer) D5 x 55 [8] on the Gear Cover [9] and remove the gear cover
section from the Inner Cover Ass'y [13]. Remove the Armature [28] together with the Inner Cover Ass'y [13]
from the Housing Ass'y [35].
(2) Remove the Armature [28] from the Inner Cover Ass'y
[13]. Place the Inner Cover Ass'y [13] on a cylindrical
jig and press down on the pinion of the Armature [28]
as shown in Fig. 1.
(3) Loosen the Machine Screw (W/Washer) M3.5 x 6 [52]
on the trigger switch and the Tapping Screw (W/SP.
Washer) D5 x 55 [8]. Disconnect the internal wire from
the Brush Terminal [32] and the Controller [51]. Tap the
end surface of the housing with a wooden or plastic
hammer lightly to remove the Stator Ass'y [31].
9-1-3. Drill chuck
The Drill Chuck 13WLR (W/Screw) [3] contacts the Nut
[4] fixed on the spindle and is secured with a UN5/8-16
right-handed screw. Put a 17-mm wrench on the Nut
[4] and insert the chuck wrench in the wrench hole of
the Drill Chuck 13WLR (W/Screw) [3] as shown in Fig.
2. Lightly tap the tip of the chuck wrench with a wooden
or plastic hammer so that it turns counterclockwise
viewing from the drill chuck side. Turn the loose Drill
Chuck 13WLR (W/Screw) [3] and remove it.
Fig. 1
Fig. 2
Pinion
Press
down
Inner cover ass'y
Armature
Chuck wrench
Wrench