Hitachi G 18SE3 Technical Data And Service Manual page 17

(2) Removal of the Dust Seal [43] <42> (43)
1. Insert the hooks of the J-204 bearing puller between the commutator and the Dust Seal [43] <42> (43) from
both sides, and fix the hooks with the wing bolts.
2. Place the J-204 bearing puller on a supporting jig and push down on the armature shaft with a hand press to
remove the Dust Seal [43] <42> (43) together with the Ball Bearing 6000VVCMPS2L [44] <43> (44).
Replace the Dust Seal [43] <42> (43) with new one because it is damaged by the removal of the Ball Bearing
6000VVCMPS2L [44] <43> (44).
(3) Removal of the Stator [16] <16> (16)
1. After removing the Armature [13] <13> (13), disconnect the internal wires connected to the Brush Holders [53]
<52> (53) and the Switch [55] <55> (56) .
2. Loosen the two Hex. Hd. Tapping Screws D5 x 75 [15] <15> (15) and remove the Stator [16] <16> (16) from
the Housing Ass'y [46] <45> (46). If the Stator [16] <16> (16) cannot be easily removed from the Housing
Ass'y [46] <45> (46), disassembly can be facilitated by heating the Housing Ass'y [46] <45> (46) to a
temperature of approximately 60˚C (140˚F) with an appropriate heating device.
(4) Removal of the Gear [20] <20> (20)
1. Loosen the four Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [28] <28> (28), and remove the Packing Gland
[27] <27> (27) together with the Spindle [25] <25> (25) and Gear [20] <20> (20) from the Gear Cover Ass'y
[5] <5> (5) in a single body.
2. Remove the Retaning Ring for D12 Shaft [19] <19> (19) from the Spindle [25] <25> (25).
3. When it is necessary to remove the Gear [20] <20> (20) from the Spindle [25] <25> (25), it is highly
recommended that the special repair tools described below are utilized.
Push
Fig. 12
Spindle
Gear
Packing gland
Sleeve
Place the assembly on a sleeve that matches the
dimension of the Packing Gland [27] <27> (27) and
push down on the top of the Spindle [25] <25> (25)
with a hand press to remove the Gear [20] <20>
(20) as shown in Fig. 12.
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