Hitachi G 18SCY, Технические данные и руководство по обслуживанию

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(2) Removal of the Dust Seal [44] <44>
1. Insert the hooks of the J-204 bearing puller between the commutator and the Dust Seal [44] <44> 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 [44] <44> together with the Ball Bearing 6000VVCMPS2L [45] <45> . Replace the Dust
Seal [44] <44> with new one because it is damaged by the removal of the Ball Bearing 6000VVCMPS2L [45]
<45> .
(3) Removal of the Stator [15] <15>
1. After removing the Armature [12] <12> , disconnect the internal wires connected to the Brush Holder Set [52]
<52> and the Switch (2P Pillar Type) W/Safety Lock [58] <59> .
2. Loosen the two Hex. Hd. Tapping Screws D5 x 75 [14] <14> and remove the Stator [15] <15> from the
Housing Ass'y [47] <47> . If the Stator [15] <15> cannot be easily removed from the Housing Ass'y [47] <47> ,
disassembly can be facilitated by heating the Housing Ass'y [47] <47> to a temperature of approximately
60 û C (140 û F) with an appropriate heating device.
(4) Disassembly of the gear (Fig. 6)
1. Loosen the four Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [32] <32> fixing the Packing Gland [31] <31> , and
remove the Packing Gland [31] <31> from the Gear Cover Ass'y [5] <5> .
2. Remove the Retaining Ring for D10 Shaft [21] <21> and the Coupling Cover [22] <22> from the Spindle [29]
<29> .
3. Hold the bottom of the Packing Gland [31] <31> with a sleeve jig whose outer diameter is slightly larger than
that of the Spindle [29] <29> . Push down the top of the Spindle [29] <29> until the groove on the Spindle [29]
<29> for fixing the Retaining Ring for D10 Shaft [21] <21> reaches the top of the Coupling [24] <24> and the
Spindle [29] <29> cannot be pushed down any more. (Step 2)
4. Turn the Packing Gland [31] <31> upside down and fix it, then push down the Spindle [29] <29> . (Step 3)
5. Insert the steel plate between the Gear and Pinion Set [20] <20> and the Packing Gland [31] <31> , and push
down the Spindle [29] <29> with a hand press to remove it. (Step 4)
Replace the Ball Bearing 6302VVCMPS2L [27] <27> with new one every time should the gear be
disassembled because the stress while pulling out the gear is applied to the Ball Bearing 6302VVCMPS2L
[27] <27> .
Step 2
Steel plate
Step 4
Push
Step 3
Push
Push