Hitachi DC 120VA Technical Data And Service Manual page 15

9-1-4. Nut
The Nut [4] is secured to Spindle (B) Ass'y [20] with a
UN5/8-16 right-handed screw. Insert a metal bar of 3 mm
or less diameter in the air vent and fix it. Put a 21-mm
wrench on the Nut [4] and turn it to remove the Nut [4].
9-1-5. Spindle (B) ass'y and others
(1) After removal of the Nut [4], press down on the tip of Spindle (B) Ass'y [20] with a hand press as shown in
Fig. 4. Then Spindle (B) Ass'y [20] can be removed from the Gear Cover [9].
(2) Remove the Retaining Ring for D35 Hole [5]. Then the Dust Seal [6] can be removed. Lightly tap the tip of
the Gear Cover [9] with a wooden hammer to remove the Ball Bearing 6003VVCMPS2L [7].
(3) Support the Clutch [19] on a cylindrical jig and press down on the end surface of the Spindle (B) Ass'y [20]
with a hand press as shown in Fig. 5. Then Sleeve [17] can be removed from Spindle (B) Ass'y [20] together
with the Spring [18].
Retaining Ring
for D35 Hole [5]
Ball Bearing
6003VVCMPS2L [7]
Fig. 4
Press
Spindle (B) Ass'y [20]
down
Dust Seal [6]
Gear Cover [9]
--- 13 ---
Wrench
Chuck wrench
Press
down
Spindle (B)
Ass'y [20]
Clutch [19]
27 mm or more
diameter
Fig. 5
Sleeve [17]
Spring [18]