TM 10-3530-207-14
5-51. BUTTON SEWING MACHINE ARM CLAMP AND SPREADER MAINTENANCE.
This task covers:
a.
Removal
b.
Disassembly
c.
Cleaning
d.
Inspection
e.
Repair
f.
Assembly
g.
Installation
INITIAL SETUP :
Tools:
Material/Parts:
General Mechanics Tool Kit (Appendix B,
Cleaning Solvent (Appendix F, Item 8)
Item 1)
Brush, Medium Bristle (Appendix F, Item 1)
Equipment Condition:
Rag, wiping (Appendix F, Item 2)
Thread removed (para. 2-13)
Removal. Remove button clamp assembly (para 2-13).
Disassembly
(1) Remove thumbscrew (1), washer (2), and clamp lever (3).
(2) Remove two spreader screws (4), two washers (2) from the arm hinge pin (5).
(3) Remove closing spring (6).
(4) Remove spreader screw (7), spreader screw nut (8), screw (20), screw (17), and bottom spreader (9).
(5) Remove two spreader screws (13) and spreader handle (14).
(6) Remove hinge screw (18) from left button clamp (11) and right button clamp (12).
(7) Remove spring screw (15), spring (16), screw (17), and the clamp hinge screw (18) from the right
button clamp (12).
(8) Remove spring screw (15), spring (19) from the left button clamp (11).
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