Brother RH-9820 Service Manual page 79

1. Ball bearings [2 pcs]
2. Ball bearing stoppers
[2 pcs]
3. Screws [2 pcs]
4. Y position sensor
5. Screw
6. Ball bearings [2 pcs]
7. Retaining ring E
8. Y pulley shaft F
9. Y timing pulley assembly
10. Timing belt
11. Idler gear 40
12. Set screws [2 pcs]
13. Set screws [2 pcs]
A
B
Assemble as shown in the
illustration.
14. Retaining rings C [2 pcs]
15. Ball bearings [2 pcs]
16. Retaining ring C
17. Y pulley shaft R
18. Y timing pulley assembly
19. Retaining ring C
20. Set screws [2 pcs]
21. Y pulley support
22. Socket bolts with washers
[2 pcs]
(Temporarily tighten)
23. Socket bolt
(Temporarily tighten)
24. Y driving shaft holder
25. Belt holder
C
Assemble as shown in the
illustration.
0841B
RH-9820
26. Socket bolts [2 pcs]
27. Socket bolt
(Temporarily tighten)
28. Driving gear 20
29. Set screws [2 pcs]
30. Pulse motor Y assembly
31. Washers [4 pcs]
32. Socket bolts [4 pcs]
33. Y feed base
34. Socket bolts [3 pcs]
35. Y shaft
36. Y shaft holder
37. Socket bolt
38. Socket bolt
1) Push the Y pulley shaft F (8) and the Y timing
pulley assembly (9) in the direction of the arrow
so that there is no play in the parts, and then
tighten the two set screws (12).
2) Align the idler gear 40 (11) with the two set
screws (12) of the Y timing pulley assembly (9),
and then push it toward the side where the ball
bearing (6) are and tighten the two set screws
(13).
D
0842B
6. ASSEMBLY
Place the pulse motor Y
assembly (30) against the
idler gear 40 (11) so that
the amount of backlash is
0.03 mm or less, and then
tighten the four socket
bolts (32).
0840B
0843B
70