Looper Thread Cam - JUKI MF-7000 Series Engineer's Manual

MF

10) Looper thread cam

1 Timing
™ When the looper thread is pulled from the highest point of the looper thread cam, the top point of
the left needle aligns with the lower face of the looper.
2 Position of looper thread guide plate and looper thread cam pawl wire
™ The height of the looper thread guide plate is 1.6 mm from the lowest part of the looper cam to the
upper part of the looper thread guide plate.
™ The rear side of the looper thread cam pawl touches the wire, and its front side is 9.6 mm above
the upper face of the wire at the highest place of the inside.
™ The looper thread cam pawl and wire are to be positioned in the center of the looper thread cam
plate.
1.6 mm
Looper thread
guide plate
3 Position of thread guide and auxiliary thread tension
™ The position of the thread guide is to be set at the position that the looper thread just becomes tight
when the looper is in the extreme left.
™ Adjust the tension of the auxiliary thread tension to make as low as the thread is just stabilized.
Looper thread
cam
Standard Adjustment
Needle
descends
Back of
looper
Align with lower
face of looper
Wire
Touch
Looper thread cam pawl
Wire
−
Looper
thread
Looper thread cam
Looper thread cam
9.6 mm
Thread guide
Looper thread
guide plate
Auxiliary thread
tension
In the center
19
−
#9