TM 10-3530-207-14
5-46. BUTTON SEWING MACHINE THREAD LOOPER SHAFT, LINK, CAM, AND CRANK MAINTENANCE
This task covers:
a.
Removal
b.
Cleaning
c.
Inspection
d.
Repair
e.
Assembly
f.
Adjustment
INITIAL SETUP :
Tools:
Equipment Condition :
General Mechanics Tool Kit (Appendix B,
Needle guide removed except for bushing (para. 5-
Item 1)
46).
Materials/Parts:
Thread and needle removed (para. 2-13).
Wiping rag (Appendix F, Item 2)
Cleaning Solvent (Appendix F, Item 8)
Brush, Medium Bristle (Appendix F, Item 1)
Removal.
(1) Remove the setscrew (1) and the looper
(2)
from the shaft (3).
(2) Remove the two setscrews (4) from the
needle guide cam (5).
(3) Remove the two setscrews (6) from the
crank (7).
(4) Remove the shaft (3) out through the front
of the machine.
(5) Remove the crank (7) with stud (8), cam
(5), and the link (9) from the machine.
5-135
