![background image](http://html1.mh-extra.com/html/baby-lock/blmy/blmy_service-manual_3412732085.webp)
3 - 6
Needle bar, presser mechanism / upper shaft mechanism
Main unit
7
Connecting the needle-presser module and upper shaft
1. Face the unit shaft D cut
1
and the upper shaft D cut
2
forward.
2. Screw the 2 screws
1
into the fixed joint
3
.
*Key point
• Adjust the gap on the left side of the fixed joint
3
to 0.5 mm.
• Align the screw holes for
the screw
1
with the D cuts
1
and
2
.
3. Rotate the upper shaft half a turn, and tighten the 2 screws
2
in the 2
screw holes on the fixed joint
3
.
*Key point
• Tighten the screws
2
in the following order:
2
-2 and then
2
-1.
• Be sure to tighten the 2 screws
2
after fully tightening the 2
screws
1
on the fixed joint.
4. Tap the lower shaft bushing
5
on lightly so that the upper shaft
4
turns
easily.
Needle bar and presser unit assy. and fixed joint gap
0.5 mm
1
Torque
1.37 – 1.79 N·m
2
Torque
0.78 – 1.18 N·m
1
0.5 mm gap
4
3
1
2
4
5
2
- 1
2
- 2
3
Set Screw, Socket (FT)
M5X5
Set Screw, Socket (CP)
M4X4
8
Tension pulley assembly attachment
1. Hand start the screw the screw
1
in the tension pulley
1
and attach to the
arm bed (fully tighten after 4 - 6 "Timing belt tension adjustment.").
1
Torque
1.18 – 1.57 N·m
1
1
Screw, Pan (S/P washer)
M
4X10DA
Summary of Contents for BLMY
Page 1: ......
Page 2: ......
Page 3: ......
Page 19: ...1 8 ...
Page 21: ...2 2 Main parts location diagram Main unit ...
Page 30: ...2 11 Disassembly Electrical parts and motors location diagram Main unit ...
Page 37: ...2 18 Thread tension mechanism location diagram Main unit ...
Page 43: ...2 24 Bobbin winder mechanism location diagram Main unit ...
Page 49: ...2 30 Needle bar presser mechanism Upper shaft mechanism location diagram Main unit ...
Page 53: ...2 34 Needle presser module breakout diagram 78 Modules ...
Page 66: ...2 47 Disassembly Feed and bobbin module breakout diagram Modules ...
Page 75: ...2 56 Thread cutter module breakout diagram Modules ...
Page 79: ...2 60 ...
Page 81: ...3 2 Needle bar presser mechanism upper shaft mechanism location diagram Main unit ...
Page 90: ...3 11 Assembly Bobbin winder mechanism location diagram Main unit ...
Page 94: ...3 15 Assembly Thread tension mechanism location diagram Main unit ...
Page 102: ...3 23 Assembly Electrical parts and motors location diagram Main unit ...
Page 109: ...3 30 Main parts location diagram Main unit ...
Page 120: ...3 41 Assembly Needle presser module breakout diagram 78 Modules ...
Page 139: ...3 60 Feed module breakout diagram Modules ...
Page 155: ...3 76 Thread cutter module breakout diagram Modules ...
Page 161: ...3 82 ...
Page 191: ...4 30 ...
Page 226: ......