Tension Disk Attachment - Brother PE770 Service Manual

Main unit
4

Tension disk attachment

1. Attach the tension disc A 1, tension disc B 2, washer 3, thread tension
plate A 4, the tension disc washer 5, washer 3, spring
adjusting screw 6 to the thread tension disk shaft.
2. Attach the tension plate assy 7 to the thread tension gear shaft, and screw
the tension adjusting screw 6 into the tension plate assy.
*Key point
• The tension adjusting screw 6 should be screwed in so that
the tip protrudes approximately 0.5 mm from the right of the
tension plate assy. 7.
3. Attach the rubber 8 to the initial adjusting plate 9.
4. Install the screw 1 into the initial adjusting plate 9.
1
S05
5
AT pulse motor attachment
1. Attach the AT pulse motor 1 using the 2 screws 1.
1
3 - 18
Thread tension mechanism
Screw, Bind
M3X4
12.5
6.9
Screw, Bind
M3X4
and tension
S05
Torque
0.78 — 1.18 N·m
THREAD TENSION SPRING
XA9900***
Torque
0.78 — 1.18 N·m
1
4 5 6 7
3
1 2
S05
8
1
9
1
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