Service manual

2-5
S-105
Released 01/2010
e-mail: service@amfreece.cz; parts@amfreece.cz; website: www.amfreece.com
Phones: +420 582 309 146 (Service); +420 582 309 286 (Spare Parts); Fax: +420 582 360 606
TROUBLESHOOTING
Remov
ing stitches at
the end of the sewing
Incorrect upper
thread tension release
Damaged right looper
Damaged throat plate hole
Incorrect right looper and needle
timming
Correct the upper thread
tension release
Replace the looper
11.4004.0.000
Replace the throat plate
Correct the right looper and
needle timming
Skipped stitch at the
sew start
Sew start thread lenght too short
The fork of left spreader is out of
the looper hole
Incorrect right looper timming
Big clamp distance from sewing
Damaged or bent looper
Incorrect thread tension
Ensure the thread is clamped firmly
Adjust the left spreader position
Adjust the right looper timmig
Adjust to max. 1 mm
Replace
Adjust the thread tension
3. SEWING FAULTS
SYMPTOM
POSSIBLE CAUSE
POSSIBLE SOLUTION
SERVICE
SECTION
Skipping stitches
Incorrectly installed needle
Wrong threading
Incorrect thread tension
Bent needle
Clearance in sewing drive
Excessive looper to needle clearance
Incorrectly adjusted stitch mech.
Replace the needle
Adjust
Adjust the thread tension
Replace
Adjust
Adjust the clearance
Adjust the stitch mechanism
Damaged loopers or spreaders
Wear or damaged stitch plate
Weak reverse spring
on spreaders
Excessive clamp foot to needle
entry point clearance
Incorrect clamping
Not even spreading
- loose fabric
Elastic material
Clean and repolish the damaged
areas, eventually replace
Replace
Replace
Adjust to 1 mm
Pressure and adjustment checking
Adjust
Adjust the sewing mechanism
C - 2
C - 3
C - 3
D - 8
D - 14
D - 14
D - 14
D - 9
D - 9
D - 11
D - 8