4-23. CLOTHING SEWING MACHINE THREAD TENSIONER MAINTENANCE - continued.
Be careful when removing the spring.
Remove tension nut (1) and spring (2).
Slide off release disc (3), two tension discs (4), and tension pin (5) from the tension stud (6).
Some models may have setscrews.
Unscrew tension stud (6) from spring regulator (7) and remove spring (8).
Remove all buildup of grease, dirt, etc., by wiping with a rag, wiping (Appendix F, Item 2).
Cleaning solvent, Federal Specification P-D-680, is both toxic and flammable. Keep off skin.
Use only in a well-ventilated area and avoid prolonged breathing of vapors. Keep away from
If needed, clean using cleaning solvent (Appendix F, Item 8) and either a soft, clean cloth
(Appendix F, Item 2).
Allow to dry.