Lower Shaft A Attachment - Brother PE770 Service Manual

Main unit
4

Lower shaft A attachment

1. Rotate the lower shaft, and bring the needle bar to its highest point 1
(lower shaft pulley base line forward).
2. Insert lower shaft A.
*Key point
• Face the screw hole 2 in the joint forward, and attach the
timing belt 3 to timing pulley D 4.
3. Attach the 2 bushing pressers 5 using the 2 screws 1.
1
5
feed module attachment
1. Rotate the lower shaft, and bring the needle bar to its highest point (lower
shaft pulley base line forward).
2. Apply EPNOC AP(N)0 to the disk 1, and attach it to the lower shaft joint.
3. Rotate feed module lower shaft B, and bring the solid dot on the outer
rotary hook to the front, directly above the D cut in lower shaft B.
4. Attach the feed module attachment.
*Key point
• The needle bar should be at the highest point.
• The solid circle mark on the outer rotary hook should be
forward.
• (Feed module side) D cut in lower shaft B is directly above
5. Attach the 2 screws 1.
*Key point
• While holding the feed module against the bottom, tighten the
screw 1 on the left.
6. Move the lower shaft A joint to the left, and fully tighten the 2 screws 2.
Application of EPNOC AP(N)0 to joint contact area
1
2
Rotary hook drive mechanism / Feed and bobbin
Taptite, Bind S
M4X10
1.47 — 1.96 N·m
Small amount
Screw
M4
1.18 — 1.57 N·m
Set Screw, Socket (FT)
M5X5
1.47 — 1.96 N·m
1
Torque
Solid circle mark
1
D cut surface
XC8387***
Torque
Torque
Lower shaft
1
pulley base line
5 2 3
4
1
Push against
the bottom.
2
Move the joint
to the left.
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