Precautions In Disassembly And Reassembly; Disassembly - Hitachi SP 18VB Technical Data And Service Manual

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8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

The [Bold] numbers in the descriptions below correspond to the numbers in the Parts List and the exploded

assembly diagram for the Model SP 18VB, and the <Bold> numbers to those in the Parts List and the exploded

assembly diagram for the Model SP 18SB.

(1) Replacement of the armature and the lock lever

1. Remove the Brush Cap [33] <35> and remove the Carbon Brush [32] [41] <36> from the Brush Holder [31]

<37>.

2. Remove the Tapping Screw (W/Flange) D5 x 55 (Black) [7] <7> and the Tapping Screw (W/Flange) D5 x 35

(Black) [18] <18>. Remove the Armature [15] <15> from the Housing Ass'y [27] <26> together with the Gear

Cover Ass'y [8] <8> and the Inner Cover [12] <12>.

3. Remove the Gear Cover Ass'y [8] <8> and the Second Pinion and Gear Set [10] <10> from the Inner Cover

[12] <12> together with the Washer [11] <11>.

4. As shown in Fig. 10, remove the Armature [15] <15> and the Lock Lever [14] <14> from the Inner Cover [12]

<12> using the J-130-2 Sleeve (Code No. 970908) and the J-131-2 Plate (Code No. 970910).

5. If the Ball Bearing 6000DDCMPS2L [13] <13> and the Lock Lever [14] <14> are remainded in the Armature

[15] <15>, remove the Ball Bearing 6000DDCMPS2L [13] <13> from the Armature [15] <15> using the J-30

Bearing Puller (Code No. 970804) and then remove the Lock Lever [14] <14>.

6. For the Model SP 18VB, remove the Magnet [26] screwed in the rear end of Armature (A) [15] with the wrench.

At this time, be careful that the Magnet [26] has a left-hand thread.

(2) Replacement of the dust seal

1. Insert the hooks of the J-204 Bearing Puller (Code No. 970982) into the clearances between the Ball Bearing

608VVC2PS2L [9] <9> and the Dust Seal [25] <25> at both ends and fix it with the bolt. At this time, be

careful not to insert the hooks excessively.

2. As shown in Fig. 11, put the J-204 Bearing Puller (Code No. 970982) on the J-130-2 Sleeve (Code No. 970908)

and push the armature shaft with a hand press to pull out the Ball Bearing 608VVC2PS2L [9] <9>.

Push

Fig. 10

--- 8 ---

J-131-2 Plate

(Code No. 970910)

J-130-2 Sleeve

(Code No. 970908)

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Sp 18sb