Brother BC800, Service Manual

Page: 60 / 134

3 - 9
Main parts Main unit
Assembly
10
Feed unit assembly attachment
1. Fit the feed unit
1
to the arm bed cover attachment position, and secure
them with the 2 screws
1
.
2. Fit the lower shaft bushing
2
to the arm bed cover attachment position, set
the lower shaft bearing presser
3
, and secure them with the 2 screws
2
.
*Key point
• Set the lower shaft bearing presser
3
so that the projecting
part of 3 is positioned at upper right.
3. Apply 1 or 2 drops of OILER to the matching section of the lower shaft
4
and the lower shaft bushing
2
.
Apply OILER to the matching section of the lower shaft
and the lower shaft bushing. 1 - 2 drops
XZ0206***
1
Torque
1.18 – 1.57 N
·
m
2
Torque
1.18 – 1.57 N
·
m
1
1
2
3 2 4
Giza Tite
5X16
Color; Gold
Giza Tite
5X16
Color; Gold
11
Upper shaft and lower shat phase matching
1. Rotate the upper shaft
1
until the trench on the upper shaft pulley
2
is at
the front.
2. Turn the lower shaft
3
to the point where the mark on the outer rotary
hook
4
is at the front, the larger feed cam
5
is at the rear, and the hole on
the lower shaft
6
is at the top.
3. Pull the timing belt
7
and hang it over the timing pulley D
8
.
Start movie clip (CD-ROM version only)
1
7
8
4
6
3
5
3
7
2