Reassembly - Hitachi W 6VM Technical Data And Service Manual

C. Removal of socket (A) ass'y and gear ass'y
(1) Remove Gear Cover (A) Ass'y [8] <8> and the Inner Cover Ass'y [20] <19>, then Socket (A) Ass'y [11]
<11>, Gear Set [14] <14> and Clutch Disc [12] <12> can be removed. If the Gear Set [14] <14> is hard to
remove, lightly tap the end surface of the Inner Cover Ass'y [20] <19> with a wood hammer. Be careful not
to lose the Spring [13] <13> on the outer circumference of the Gear Set [14] <14> and Washer (A) [16]
<16>. As shown in Fig. 5, insert two flat-blade screwdrivers between the Inner Cover Ass'y [20] <19> and
the Gear Set [14] <14> at each side and remove the Gear Set [14] <14> and Ball Bearing 608VVC2PS2L
[15] <15 > from the Inner Cover Ass'y [20] <19> as a single unit.
Flat-blade screwdriver

8-2. Reassembly

Reassembly can be accomplished by following the disassembly procedures in reverse. However, special
attention should be given to the following items.
(1) Fan side Ball Bearing [18] <15> for the Armature [21] <20> in the Inner Cover Ass'y [20] <19> should be
renewed in disassembling the Armature [21] <20>.
(2) Lubrication
Grease: Hitachi Motor Grease (Code No. 930035)
Application:
(a) Fill a moderate amount of grease in Gear Cover (A) Ass'y [8] <8>. (If Gear Cover (A) Ass'y [8] <8> is new,
fill it with 7 g of grease.)
(b) Outer circumference and clutch of Socket (A) Ass'y [11] <11>
(c) Teeth and clutch of the Gear Set [14] <14>
(d) Outer circumference of the Gear Set [14] <14>
(e) Clutch and inner circumference of the Clutch Disc [12] <12>
(f) Pinion of the Armature [21] <20>
Inner Cover Ass'y [20] <19>
Gear Set
[14] <14>
Fig. 6
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Flat-blade screwdriver