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Attachment Of Upper Shaft Assy - Brother NV-10A Service Manual

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Table of Contents
Main unit
4

Attachment of Upper shaft assy.

1. Attach the pulley 1 to the upper shaft assy. 2.
2. Hang the T belt 3 on the upper shaft pulley 4.
3. Insert the shaft of the needle bar crank 5 into the thread take-up counter
weight 6, and then attach the upper shaft assy. 2 to the arm bed.
*Key point
• Check that the 2 lower shaft bushings 7 engaged with the
attaching part 8 of the arm bed.
4. Attach the scrrew 1.
*Key point
• Check that the screw 1 with the D cut surface of the needle
bar crank rod assy. 5.
1
5
Attachment of Bushing presser (For upper shaft)
1. Attach the 2 bushing pressers 1 to the arm bed with the 2 screws 1.
1
Needle bar, presser mechanism / upper shaft mechanism
Set Screw, Socket (FT)
M5X5
1.18 – 1.57 N·m
Taptite, Bind S
M4X10
1.47 – 1.96 N·m
2
3
8
5
Torque
1
Torque
1
4
1
2
8
7
1
6
1
1
3 - 9

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