Upper Shaft Mechanism - Brother RH-9820 Service Manual

5-12. Upper shaft mechanism

* Carry out the following with the machine head in the upright position.
1. Screw
2. Set screw (Loosen)
3. Set screws [2 pcs]
(Loosen)
4. Set screws [2 pcs]
(Loosen)
5. Set screws [2 pcs]
(Loosen)
6. Set screws [2 pcs]
(Loosen)
7. Upper shaft unit
(Pull out from the back.)
8. Pinion
9. Screws [3 pcs]
10. Plain washers [3 pcs]
NOTE:
The bearing unit (16) and the bearing inner rings <A> and <B> are joined with adhesive, so avoid
disassembling them if possible.
11. Pulley
12. Set screws [2 pcs] (Loosen)
13. Set screws [2 pcs] (Loosen)
14. Set screws [2 pcs] (Loosen)
15. Set screws [2 pcs] (Loosen)
16. Orthogonal shaft unit
(Pull out from the rear cover.)
17. Pulley base
18. Take-up cam roller
19. Gear
20. Zigzag cam
RH-9820
5. DISASSEMBLY
1091B
52