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8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The [Bold] numbers in the descriptions below correspond to the numbers in the Parts Lists and exploded
assembly diagram for the Models G 10SR2, G 12SR2 and G 13SR2.
8-1. Disassembly
(1) Replacement of the Armature and Stator
Remove the Brush Caps [47] and take off the Carbon Brushes [48].
Loosen the four Tapping Screws D5 x 25 (Black) [1] which fix the Gear Cover Ass'y [4], and take off the
Inner Cover [9] together with the Armature [10] from the Housing Ass'y [39].
At this time, make sure that the Rubber Bushing [16] is fitted in the housing ball bearing chamber. If the
rubber bushing comes off the housing ball bearing chamber or adheres to the Ball Bearing [15],
reassemble the disc grinder according to "8-2. Reassembly".
Loosen the two Tapping Screws (W/Flange) D4 x 45 [57] securing the Tail Cover [56] and remove the Tail
Cover [56].
Remove the four internal wires from the Stator [13] connected with the Brush Holder [49], the Pillar
Terminal [45] and the Switch [50].
Loosen the two Hex. Hd. Tapping Screws D4 x 65 [12] securing the Stator [13] and remove the Stator [13]
from the Housing Ass'y [39]. If you have any trouble with removing the Stator [13], heat the Housing Ass'y
[39] to about 60˚C for easier dismantling.
(2) Replacement of the rubber bushing
Insert the J-201 Spring Hook H-75 (Special Repair Tool) between the Rubber Bushing [16] assembled in
the Housing Ass'y [39] and the housing ball bearing chamber and pull out the Rubber Bushing [16].
(3) Replacement of the Dust Seal
Insert the hooks of the J-204 Bearing Puller (Special Repair Tool, Code No. 970982) between the Ball
Bearing [15] and the Dust Seal [14] and fix the hooks with the wing bolts. Be careful not to insert the hook
too much.
Put the bearing puller on an appropriate stand. Push down the armature shaft with a hand press and pull
out the Ball Bearing [15].
Pull out the Dust Seal [14] from the armature shaft.
(4) Disassembly of the gear
Loosen the four Seal Lock Screws (W/Sp. Washer) M4 x 12 [26] that secure the Packing Gland [25] to the
Gear Cover Ass'y [4] and remove the Packing Gland [25] from the Gear Cover Ass'y [4].
Remove the Retaining Ring for D11 Shaft [18] that secures the Gear [20] to the Spindle [28].
Remove the Wave Washer [19] and the Gear [20] from the Spindle [28].
Summary of Contents for G 10SR2
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