Attachment Of Upper Shaft Assy - Brother SL100 Service Manual

Basic of Assembly
2

Attachment of Upper shaft assy

1. Insert the thread take-up counter weight of the upper shaft assy into the shaft of needle bar crank rod
assy, and set the two lower shaft bushings of upper shaft assy to the two mounting positions on arm
bed. And attach the two bushing pressers to the arm bed with the two screws (taptite, bind S M4X10).
2. Align the D cut surface of needle bar crank rod assy with the screw hole on thread take-up counter
weight, and secure it with the screw (set screw, socket (FT) M5X5).
3. Pass the timing belt to the upper shaft assy.
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Refer to 3 - 36 Assembly of Upper shaft assy.
Mounting positions
Shaft of thread take-up lever
Needle bar
crank rod assy
Bobbin winder, Upper shaft, Needle-presser module
D cut surface
Thread take-up
counter weight
Screw hole
Set screw, socket (FT) M5X5
Upper shaft assy
Thread take-up counter weight
2 - 26
Upper shaft assy
Lower shaft bushing
Bushing pressers
Taptite, bind S M4X10
Lower shaft bushing
Timing belt
Taptite, Bind S M4X10
Set Screw, Socket (FT) M5X5
Hex wrench 2.5 mm