Dürkopp Adler 806N-111-10 Service Instructions Manual page 99

Machine head 121
Fig. 71: Replacing the right arm shaft bearing (2)
To replace the right arm shaft bearing:
1. Remove both head covers.
2. Loosen the screw (1).
3. Remove the springs (2) (2x).
4. Loosen threaded pins (10) and (4).
5. Push the toothed belt to the left and off the upper toothed belt wheel.
6. Use 2 screwdrivers or similar devices to pry off the drive unit.
 The drive unit consists of: Toothed belt wheel (9), handwheel flange (8)
7. Remove the handwheel flange (8).
8. Replace the toothed belt wheel (9), consisting of positions (3), (4), (5),
9. Re-install the handwheel flange (8).
10. Install the drive unit.
11. Re-attach the previously removed parts.
Important
After replacing the arm shaft bearing, you need to readjust the machine.
Service Instructions 806N-111-10/806N-121-10 - 00.0 - 09/2023
and groove ball bearing (5).
(6), (8) and (9), completely (part no.: 0271 000322) or pull off the groove
ball bearing (5) with an extractor and press on a new groove ball bearing
(part no.: 0211 000362).
NOTICE
Property damage may occur!
Needle breakage and damage if needle penetrates incorrectly.
Readjust the machine after replacing the arm shaft bearing.
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