Presser Bar Attachment - Brother PE770 Service Manual

Computerized sewing machine
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Modules
3

Presser bar attachment

1. Insert the presser bar bushing 1 into the shaft hole on the bottom of the
unit holder.
2. Attach the plate spring 2 to the unit holder with the screw 1.
*Key point
• Press the presser bar bushing with the plate spring.
3. Dip the tip of the presser bar 3 (opposite end from the retaining ring) in
FBK OIL RO 100.
4. Insert the presser bar 3 into the presser foot rack 4.
5. Temporarily attach the screw 2 to the presser bar clamp 5.
6. Adjust the presser bar height and parallel alignment, and then fully tighten
the screw 2.
*Key point
• Refer to "Presser bar height" on page 4 - 15 for the adjustment
procedure.
7. Apply a bead of MOLYKOTE EM30L to the groove on the stopper pin of
the unit holder.
8. Insert spring
and the presser bar clamp 5 into the presser bar 3.
S07
*Key point
• Engage the stopper pin 6 of the presser bar clamp 5 with the
groove on the stopper pin of the unit holder.
9. Pass the presser bar 3 through to the presser bar bushing 1.
Dip the tip of the presser bar (opposite end from the
retaining ring) in FBK OIL RO 100.
Apply MOLYKOTE EM30L to the groove on the
stopper pin of the unit holder.
1
2
S07
6.5
Needle-presser module
Taptite, Bind B
M3X8
0.78 — 1.18 N·m
Set Screw, Socket (CP)
M5X10
Hand tighten
55.7
Dipping
XC8388***
Bead
XC8385***
Torque
Torque
SPRING
XC4457***
5
2
1
1
4
S07
3
2
6
3 - 41

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