Hitachi SB 75 Quick Start Manual page 3

(5) Removing the gear
assembly 22
z# After removing the belt cover and the V-belt, loosen the
gear cover clamping screws (M4 + Hd. FT-screws (3pcs.))
30
; then, remove the gear cover
27
pinion and pulley (B)
z# Remove the D10 C-Type retaining ring
24
the gear .
z# Remove the 3 x 3 x 8 key
remove the drive pulley assembly
z# To remove the pinion
then remove the gear cover
(6) Removing the housing
z# Remove the sanding belt, belt tightener assembly
cover 35 , and V-belt
Loosen the M4 + Hd. FT-screws
z#
plate 67 and shoe cushion
Loosen the M4 + tapping screw
z#
long plus (+) driver through the hole on the bottom of the body
20
; then remove the housing
2-2. Reassembling
Perform reassembling by following disassembling procedures in re-
verse order. The gear cover should be filled with Hitachi Motor
Grease No. 29 and the felt on the body and the idle pulley should be
impregnated with Turbine Oil No. 90 as lubricant. Exercise utmost
care in keeping the housing and the handle cover free from Turbine
Oil No. 90 while reassembling.
2-3. After disassembly and repair, measure the, insulation resistance
and conduct a dielectric strength test.
24 , pinion 27 , and drive pulley
29
together with the
33
.
26
25
and the washer (B)
22
.
27
, first remove the pulley (B)
29 .
1
34
43 (2pcs.); then remove the
66 .
36
(4pcs.) by inserting a
1 .
and then remove
23
; then,
33
;
44 , belt
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