Advertisement
WARNING: Before attempting disassembly, be sure to turn off the power switch and disconnect
the plug from the power source outlet.
1. Precautions on disassembly and reassembly
[Bold] numbers in the description below correspond to the item numbers in the parts lists and exploded
assembly diagrams of the Models G 10SR4(S), G 12SR4(S), and G 13SR4(S).
1. Removal of the armature and stator
(1) Loosen the Screw D4 x 16 [41] and pull out the Tail Cover [40]. Remove the two Carbon Brushes (1
Pair) [27] from the Brush Holders [31].
(2) Loosen the four Screws D4 x 23 [1] that fix the Gear Cover Ass'y [3] to remove the Armature [7] from
the Housing [26] together with the Bearing Holder [6]. At this time, check that the Rubber Bushing [25]
is fitted in the housing ball bearing chamber.
(3) Loosen the Special Nut M6 [4] that fixes the Gear and Pinion Set [21] and remove the Gear and Pinion
Set [21].
(4) Insert the hooks of the J-204 bearing puller (special repair tool, Code No. 970982) between the Ball
Bearing 608S [5] and Bearing Holder [6] from both sides and secure the hooks in place with the wing
bolts.
(5) Put the J-204 bearing puller on an appropriate stand. Push down the armature shaft with a hand press
to remove the Ball Bearing 608S [5]. Then remove the Bearing Holder [6].
(6) Remove the four internal wires connected to the Tab Terminal [28] and Pushing Button Switch [32]
from the Stator [9].
(7) Remove the Fan Guide [8] and Stator [9] from the Housing [26].
NOTE: • If you have any trouble in removing the Stator [9], heat the Housing [26] to about 60°C
for easier removal.
• The internal wire (single wire) of the Stator [9] is covered with a heat-shrinkable tube.
Do not forcefully bend the internal wire of the Stator [9] repeatedly and do not peel off
the heat-shrinkable tube when removing the Stator [9] from the Housing [26].
Otherwise, the internal wire may be disconnected.
• Do not forcefully bend the stator terminal when removing the stator terminal from the
Pushing Button Switch [32] and the tab terminal. Otherwise, the stator terminal may be
broken.
2. Removal of the rubber bushing
Insert the J-201 spring hook H-75 (special repair tool) between the Rubber Bushing [25] assembled in the
Housing [26] and the housing ball bearing chamber, and then pull out the Rubber Bushing [25].
3. Removal of the dust seal
(1) Insert the hooks of the J-204 bearing puller between the Ball Bearing 626ZZ [24] and the Dust Seal
[23] and fix the hooks with the wing bolts.
NOTE: Be careful not to insert the hooks excessively.
(2) Put the bearing puller on an appropriate stand. Push down the armature shaft with a hand press and
pull out the Ball Bearing 626ZZ [24].
(3) Pull out the Dust Seal [23] from the armature shaft.
REPAIR GUIDE
Disassembly
-1-
Advertisement
