TM 10-3530-207-14
5-31. DARNING SEWING MACHINE ROTATING HOOK MAINTENANCE.
This task consist of:
a.
Removal
b.
Cleaning
c.
Inspection
d.
Repair
e.
Installation
f.
Adjustment
INITIAL SETUP:
Tools:
Equipment Condition :
General Mechanics Tool Kit (Appendix B,
Thread and needle removed (para. 2-12).
Item 1)
Cylinder and slide plates removed (para. 4-37).
Materials/Parts:
Rag, wiping (Appendix F, Item 2)
Cleaning Solvent (Appendix F, Item 8)
Brush, Medium Bristle (Appendix F, Item 1)
Removal.
(1) Remove bobbin (1) by moving the handle up on the
bobbin case (2).
(2) Remove two screws (3) and hook gib set (4).
(3) Remove bobbin case (2).
(4) Remove rotating hook (5) by unscrewing screw (6).
(5) Remove bobbin case opener (7), hook washer (8) and
bobbin case lever eccentric (9)
(6) Remove hook saddle (10) by unscrewing screws (11) and
removing flat washer (12).
(7) Remove gear (13).
(8) Remove fulcrum and stud (14) from hook saddle (10) by
removing screw (15).
(9) Remove oil wick (16) from hook saddle (10).
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