JUKI MEB-3200 Engineer's Manual page 61

Adjustment Procedures
1. Loosen setscrew 1 to move to and fro gimp guide 2 and adjust
the remaining amount of the gimp at the end of sewing.
2. To adjust, perform actual sewing on the fabric or the like and
determine the position of gimp guide 2 so that the remaining
length of the gimp is approximately 4 mm at the time of
completion of sewing.
1) When using the sewing thread or the like as the gimp, the
remaining amout of the gimp may not be stabilized.
In this case, insert the gimp in gimp presser plate 3.
Adjustment Procedures
1. Loosen two setscrews 3 in the rotary tension pulley installing
plate.
2. Hook a spring balancer to rotary tension pulley shaft 2 and
draw the balancer with 14.7N force in the direction of the arrow
mark "a".
3. While drawing the spring balancer, tighten two setscrews 3 in
the rotary tension pulley installing plate.
1) When measuring the tension, the adjustment of the tension
can be performed with ease if a screw or the like to hook
the spring balancer is inserted into rotary tension pulley shaft
2.
2) Screw 5 for rotary tension pulley shaft 2 is M3.
(Caution) After the adjustment of the tension of the timing
belt, make sure of "(6) Clearance between the needle and
the looper" without fail.
Results of Improper Adjustment
Results of Improper Adjustment
When the tension is high :
™ Needle bar tilts and the relation
with the looper is warped.
When the tension is low :
™ Tooth skipping of the timing belt
occurs.
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