Hitachi M 8V2 Technical Data And Service Manual page 10

(4) Remove the Armature [34] ([33]) and the End Bracket [46] ([45]) (Fig. 5)
(a) Remove the Carbon Brushes (1 Pair) [25] ([23]).
(b) Loosen and remove the two Tapping Screws (W/Flange) D4 x 16 (Black) [37] ([36]) and the Machine
Screw (W/Washers) M6 x 30 (Black) [36] ([35]), and remove Handle (R) B [52] ([52]).
(c) Disconnect Cord (A) [54] from the dial ass'y of the Controller Package [3], and remove Handle (R) A [51]
([50]). (Model M 8V2 only).
(d) Loosen and remove the four Tapping Screws D5 x 50 [53] ([53]).
(e) Being very careful to avoid hitting the Magnet [4] against the stator ass'y, remove the Armature [34] ([33])
and the End Bracket [46] ([45]) from the Housing Ass'y [27] ([26]). As the Magnet [4] is very fragile, it
must be handled with the utmost caution (Model M 8V2 only).
( f ) Take out the Lock Piece [47] ([46]) which is mounted in the End Bracket [46] ([45]).
(g) Being very careful not to damage the magnet component, fit a 14-mm wrench onto the hexagonal portion
of the Magnet [4], and loosen and remove it from the Armature [34] ([33]) (Model M 8V2 only).
(h) Loosen and remove the three Machine Screws (W/Washers) M4 x 12 (Black) [43] ([42]), remove the
Bearing Cover [57] ([56]), Pushing Button [59] ([58]) and Lock Spring (A) [58] ([57]).
( i ) Being very careful not to damage the outer surface of its core, secure the Armature [34] ([33]) in a vise.
( j ) Turn the Thrust Nut [56] ([55]) counterclockwise with a wrench to loosen and remove it.
(k) With a hand press, disassemble the Armature [34] ([33]) from the End Bracket [46] ([45]).
Housing Ass'y
[27] ([26])
Magnet
[4]
Armature
[34] ([33])
Carbon Brush
(1 Pair) [25] ([23])
Thrust Nut
[56] ([55])
Bearing Cover
[57] ([56])
Lock Spring (A)
[58] ([57])
Pushing Button
[59] ([58])
Machine Screw (W/Washers)
M4 x 12 (Black) [43] ([42])
End Bracket
[46] ([45])
Handle (R) A
[51] ([50])
Cord (A) [54]
Tapping Screw
D5 x 50 [53] ([53])
Fig. 5
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Machine Screw (W/Washers)
M6 x 30 (Black) [36] ([35])
Handle (R) B
[52] ([52])
Dial ass'y
Tapping Screw
(W/Flange) D4 x 16
(Black) [37] ([36])