Maier 352 - Sewing Faults and Remedies

32
Sewing faults and how to remedy them
Fault
Cause
Remedy
Thread tears
Thread tension too tight
Slacken thread tension
Needle worn out
Change needle, see page 16
Looper wrongly adjusted
see page 25
Needle stroke wrongly adjusted
see page 16
Sharp edge in looper, stitch plate or feed
dog
Polish the part
Needle breaks
Needle not fitted correctly
see page 16
Wrong needle system
Check needle system, see page 16
Looper wrongly adjusted
see page 25
Plunger (rib shaft) timing incorrect
Adjust plunger (rib shaft), see page 28
Missing
stitches
Needle bent or blunt
Change needle, see page 16
Looper wrongly adjusted
see page 25
Wrong needle system
Needle system, see page 16
Needle stroke wrongly adjusted
see page 16
Needle support plates worn out
Replace needle support plates
Stitch plate wrongly adjusted
Check, adjust if necessary, see page 23
Stitch plate set incorrectly
Set stitch plate, see page 23
Thread take-up cam wrongly adjusted
Correct adjustment, see page 26
Penetration
Needle bent or blunt
Change needle, see page 16
Plunger (rib shaft) timing incorrect
Adjust plunger (rib shaft), see page 28
Stitch plate set incorrectly
Set stitch plate, see page 23
Bearing play in plunger shaft or plunger
lever
Adjust plunger (rib shaft), see page 28
Plunger (rib shaft) not exactly in the middle
under cloth retainer
Adjust plunger (rib shaft), see page 28
Miscellaneous
Transport problems in the area of the cross
seam can be caused due to the guide
rules.
Only use one guide rule, or replace with
another guide rule.