Hitachi SB 75 Quick Start Manual page 2

Be sure that the plug is disconnected from the power receptacle
during disassembly, reassembly, and polishing belt replacement.
When tightening a tapping screw, align the holes on both sides.
2-1. Disassembly (Encircled numbers in the following description
denote item numbers in the Parts Price List.)
(1) Removing the armature assembly
z# Remove the belt cover
clamping screw (M4 + tapping screw (1pc.))
remove the V-belt
z# By loosening the CB cap
Loosen the dust cover clamping screw (M4 + tapping screw
z#
and the M4 + Hd. machine screws
(1pc.)) 41
then, remove the dust cover
Finally, loosen the inner cover clamping screws (M5 + tap-
z#
ping screws (4pcs.))
together with the innercover
armature with a wooden mallet from the pulley (A)
(2) Removing the stator
z# After removing the armature, detach the handle cover
by loosening the handle cover clamping screws (M4 + tapping
41
screws (3pcs.)
z# Disconnect the stator lead wires from the terminal on the
trigger switch 54
z# After removing the stator's CB terminal suspended on the
CB tube, remove the lead wire
(2pcs.) by loosening the M5 + Hd. machine screw
then, remove the stator
(3) Removing the belt tightener assembly
z# After removing the polishing belt, return the lever to its
original position and loosen the M4 + Hd. FT-screws
(2pcs.); then, pull out the belt tightener assembly
the operator.
z# By removing the D10 C-Type retaining ring
47
shaft (B) , the idle pulley
(4) Removing the pulley (A)
z# To remove the pulley (A)
and then turn the pulley (A) clockwise with a wrench.
z# To remove the pulley (B)
and then turn the pulley (B) counterclockwise with a wrench.
11
35
after loosening the belt cover
34 .
69
, remove the carbon brushes
39
and dust guide
16
; then, remove the armature
15
while lightly tapping the
5
).
and the connector 60
9
and the fan guides (C)
5 .
44
45
can be removed.
32 and pulley (B)
32
, first remove the armature
33 , clamp the drive pulley
36
, and
68
40 (2pcs.);
38
.
11
32 side.
63
.
19
7 (2pcs.);
45
and idle pulley
30
44
toward
48
and the
33
22
−#2 −
.