Brother RH-9820 Service Manual page 89

1. Bearing
2. Set screws [2pcs]
(Temporarily tighten)
3. Set screw collar
4. Bearing
5. Internal retaining ring
6. Socket bolt (Temporarily
tighten)
7. Vertical shaft timing pulley
U assembly
8. Timing belt
9. Driving looper shaft
assembly
10. Rubber cap
A
Push the driving looper shaft
assembly (9) from the lowered to
the raised position, then push the
set screw collar (3) down to clamp
the bearing (4), and then tighten
the two set screws (2).
C
Place the timing belt (22) onto the looper base
(b), driving looper shaft assembly (9) and the
theta M pulley assembly (18).
11. Internal retaining ring
12. Bearing
13. Internal retaining ring
14. Tension pulley U
15. Retaining ring C
16. Timing pulley holder
assembly
17. Socket bolts with washers
[2 pcs]
18. Theta M pulley assembly
19. Set screws [2 pcs]
20. Pulse motor assembly R
21. Socket bolts with washers
[4 pcs]
B
Place the timing belt (8) onto the needle bar gear block (a)
and the vertical shaft timing pulley U assembly (7).
0923B
D
0925B
RH-9820
22. Timing belt
23. Motor stopper
24. Socket bolts [2 pcs]
25. Internal retaining ring
26. Bearing
27. Internal retaining ring
28. Tension pulley
29. Retaining ring C
30. Timing pulley holder assembly
31. Socket bolts with washers
[2 pcs]
Align the screw (c) at the left side of the theta
M pulley assembly (18) with the screw stop on
the driving looper shaft assembly (9). In
addition, set the clearance between the theta M
pulley assembly (18) and pulse motor
assembly R (20) to 2 mm.
6. ASSEMBLY
0924B
0926B
80