Baby Lock Evolve BLE8, Service Manual

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Before adjustment of Thread delivery System(ATD)
In case you can not get the proper stitches, please check the following items before you adjust
the
Thread Delivery System.
a) Is thread positioned between discs? Double check the thread position.
b) Does spring in the head thread guide catch thread properly?
BLE1AT’s head thread guide is exclusive for BLE1AT. You can not use other head
thread
guides for LX,DX,SX on BLE1AT.
c) Is senser cable positioned on rollers?
Double check each sensor cable is positioned on rollers especially the one in the back
of fine
tuning screw.
d) Is stitch selector dial positioned correctly?
e) Is each thread threaded correctly according to the quick threading reference guide?
4. Adjustment of Thread Delivery Unit
4-1 OPEN-SHUT TIMING OF TENSION DISCS
CORRECT TIMING - When upper looper is lowest position, front tension discs
should be just shut perfectly.
How to adjust timing
a) Loosen 2 pcs of thread delivery unit timing pulley fixing screw .
b) Rotate the machine pulley and lower the upper looper at the bottom.
c) Turn the thread delivery cam toward you until the front thread press disc shuts.
d) Tighten 2 pcs of thread delivery unit timing pulley fixing screw and make sure to
fit the thread delivery unit timing pulley. .
Note:The screws of thread derivery cam and thread derivery changing cam
should be placed in line.
4-2 CLEARANCE A AND B FOR THREAD PRESS POST ARM
CORRECT CLEARANCE – 0.4mm(both front and rear)
How to adjust clearance
A) Rear clearance adjustment (You are required to adjust this adjustment first.)
a) Rotate the machine pulley and rear tension discs at the shut position.
b) Loosen fixing screw of thread delivery changing cam .
c) Make a clearance of 0.4 mm between rear thread press driving arm and thread
press disc shaft.
d) Move the thread delivery changing cam to rightward and tighten screws firmly. .
e) Rotate the machine pulley and make sure the clearance of 0.4mm between the rear
thread press driving arm and thread press shaft.
B) Front clearance adjustment
a) Rotate the machine pulley and front tension discs at the shut position.
b) Loosen fixing screw of front thread press driving arm1 .
c) Make a clearance of 0.4 mm between the front thread press driving arm 2 and
thread press disc shaft.
e) Tighten fixing screw firmly
f) Rotate the machine pulley and make sure the clearance of 0.4mm between the
front thread press driving arm 2 and thread press shaft.
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T’ T.
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Note
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sure the rear
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Note: After adjusting rear and front clearance, make sure clearance of 0.9 mm between the discs.
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