Precautions In Disassembly And Reassembly; Disassembly - Hitachi W 6VM Technical Data And Service Manual

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

The numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly
diagram. The [BOLD] numbers are for the Model W 6VM, the <Bold> numbers for the Models W 6V4 and
W 6VA4.

8-1. Disassembly

A. Disassembly of the parts within the handle
(1) Removal of the Handle Cover [46] <45>
Loosen the three Tapping Screws (W/Flange) D4 x 20 (Black) [47] <46>, and remove the Handle Cover
[46] <45>.
(2) Removal of the Carbon Brush (Auto Stop Type) (1 Pair) [30] <29>
With a small flat-blade screwdriver, lift up on the spring, and pull the Carbon Brush (Auto Stop Type)
(1 Pair) [30] <29> out from Brush Holder (A) [29] <28> slightly. Next, pull out the terminal portion of
Carbon Brush (Auto Stop Type) (1 Pair) [30] <29> from the Brush Holder (A) [29] <28>. Remove the
carbon brushes from both sides in the same manner.
(3) Removal of the Cord [38] <37>
After loosening the two speed control switch retaining screws, loosen the two Tapping Screws (W/Flange)
D4 x 16 [40] <39> which retain the Cord Clip [39] <38>, and remove the Cord [38] <37> together with the
Cord Armor D8.8 [37] <36>.
B. Removal of the armature and stator
(1) Removal of the Armature [21] <20>
Remove the three Tapping Screws D4 x 25 (Black) [7] <7> from the Gear Cover (A) Ass'y [8] <8>, and
remove the Inner Cover Ass'y [20] <19> with the Armature [21] <20> from the housing. And as illustrated
in Fig. 5, the Inner Cover Ass'y [20] <19> can be removed from the Armature [21] <20> by utilizing a J-130
sleeve (special repair tool, Code No. 970908) and a J-131 plate (special repair tool, Code No. 970909).
(2) Removal of the Stator [24] <23>
First, remove the Fan Guide [22] <21> from the inside of the housing.
Then, loosen the two Hex. Hd. Tapping Screws D4 x 50 [23] <22>, and lightly tap the end surface of the
Housing [36] <35> with a wooden hammer to loosen and remove the Stator [24] <23>.
Fig. 5
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