Brother DB2-DD7100, Service Manual

Page: 45 / 153

6. ASSEMBLY
SL-710A
38
8. Insert the needle bar (9) into the arm from above.
9. Tap needle bar bush U (10) into the arm so that the
hole (C) is facing toward the pulley.
* Tap in needle bar bush U (10) while checking that
the needle bar (9) can move up and down
smoothly.
(This is to check that needle bar bush U (10) is
being tapped in straight downward.)
* Tap in needle bar bush U (10) until its top is about
flush with the top of the arm.
10. Pull the needle bar (9) out from the bottom of the arm.
11. Tighten the set screw (11) to secure needle bar bush
U (10).
12. Insert the slide block (12) into the groove in the arm so
that the bevelled side is facing inward.
13. Insert the needle bar clamp (13) into the crank rod (14)
and the slide block (12).
14. Insert the needle bar (9) into the arm from above.
15. Set the needle bar (9) so that the screw hole (D) is
facing toward the pulley.
16. Turn the pulley to set the needle bar (9) to its lowest
position, and then align the reference line (E) on the
needle bar (9) with the bottom edge of needle bar
bush D (15) in accordance with the type of needle to
be used.
17. Tighten the screw (16) of the needle bar clamp (13).
18. Insert the rubber caps (17) and (18).
1740M
0924M
(17)
(18)
(9)
(16)
(13)
(15)
(D)
(9)
(E)
DA X 1
1738M
(C)
(10)
(9)
1739M
(13)
(12)
(14)
(10)
(11)
DB X 1
DP X 5
(15)