4-23. CLOTHING SEWING MACHINE THREAD TENSIONER MAINTENANCE - continued.
Inspect hardware for damage.
Inspect the spring for damage.
Inspect discs for damage.
Inspect pin for damage.
Inspect tension stud for damage.
Repair. Repair of the thread tensioner is limited to the replacement of defective components.
Slide spring (1) onto tension stud (2) and install tension stud (2) onto spring regulator (3), the two
tension discs (4), and the release disc (5) onto the tension stud (2).
Be careful when removing the spring.
Install the spring (6) and secure with tension nut (7).
Insert the tension pin (8) into the assembly.