Precautions In Disassembly And Reassembly; Disassembly - Hitachi C 7SB2/C Technical Data And Service Manual

8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY

The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List for the Model
C 7SB2, and the <Bold> numbers for the Model C 7BD2. During disassembly and reassembly, and at all other
times as well, sufficient care must be exercised in handling to ensure that is no deviation in the flatness of the
bottom surface of the base and in its perpendicularity with relation to the saw blade.

8-1. Disassembly

(1) Prior to attempting further disassembly, ensure without fail that the TCT Saw Blade [14] <14> is removed to
prevent damage to its cutting edge, and to avoid possible serious accident.
(2) Remove the Lower Guard [7] <7>:
First, disconnect the Return Spring [8] <8>. Then, loosen the two Seal Lock Flat Hd. Screws M4 x 10 [12]
<12>, and take off the Bearing Cover [11] <11>. The Lower Guard [7] <7> can then be removed.
(3) Remove the Bearing Holder [3] <3> together with the Spindle and Gear Set [2] <2>:
After removing the Lower Guard [7] <7> as described above, loosen the two Seal Lock Flat Hd. Screws
M5 x 14 [4] <4>, and take off the Bearing Holder [3] <3> together with the Spindle and Gear Set [2] <2>.
(4) Separate the Spindle and Gear Set [2] <2> from the
Bearing Holder [3] <3>:
As illustrated in Fig. 1, support the Bearing Holder [3] <3>
with an appropriate tubular jig, and push down on the end
of the Spindle and Gear Set [2] <2> with a hand press to
separate the Spindle and Gear Set [2] <2> from the Bearing
Holder [3] <3>.
(5) Remove the Armature [29] <29>:
First, remove the Carbon Brushes (1 Pair) [43] <43>. Next,
take off Lever (A) W/O Stopper [68] <69>, loosen the Long Nut
[67] <68>, and remove the Bolt (Square) M6 x 20 [39] <39>.
Then, loosen the Machine Screws (W/Washers) M5 x 55 [20]
<20>, and separate the Housing Ass'y [22] <22> from the Gear
Cover [34] <34>.
The Armature [29] <29> will remain within the Housing Ass'y [22] <22>. With a wooden or plastic hammer, tap
gently on the outside of the Housing Ass'y [22] <22> to loosen and remove the Armature [29] <29>. At this
time, be very careful not to hit the fan on the armature. Remove the Ball Bearing 6000VVCMPS2L [23] <23>
and Ball Bearing 6202VVCMPS2L [32] <32> with a bearing puller, and remove Washer (A) [24] <24> and
Dust Washer (B) [31] <31>.
(6) Remove the Base Ass'y [59] <60>:
Extract the Roll Pin D6 x 40 [62] <63> which connects the Base Ass'y [59] <60> and the Housing Ass'y [22]
<22>, and separate them.
Jig
--- 8 ---
Push
49 mm
(1-15/16")
Fig. 1