Aurora JJ6003 [7/30] Sewing problems
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Aurora JJ6003 [7/30] Sewing problems

Aurora JJ6003 [7/30] Sewing problems
7
3. SEWING PROBLEMS
PROBLEM
SUGGESTED CHECK SEQUENCE
Breaking cotton
Change needle. Try less tension.
Use stronger Cotton.
Check thread path for smoothness.
Shorten spring in needle Plunger.
Check looper is not bent or damaged
Breaking needles
Check needle is straight.
Carefully turn machine over and watch.
Needle for hitting needle plate or cups.
Check cup height.
Check looper is not hitting needle.
Check feed timing.
Uneven stitch length
Clean excess oil off feed wheel and feed gripe.
Replace feed grips.
Excessive looper play
Replace cam bell.
Front piece of material is
not fed correctly
Adjust arm tension by turning adjusting clockwise
to increase tension.
Dis stitching
Check there is sufficient cotton tension.
Check looper clearances and timing of machine.
Check that a “loop”is being made;if not try a smaller
needle.
Check needle is passing through triangle.Try less
depth of seam.
Check cotton is easily pulled through eye of needle.
Continuous filament thread can cause mis- stitching.
Oil stops being pumped to oil sight dome
(1)Try changing to maximum stitch length and run machine.
(2)Check oil level-top up if necessary.
( (3)Check oil filter by removing machine from base.
Oil leaks from a seal
Before changing seal try the following
(1)Remove pulley/fly wheel
(2)Clean and dry seal with tissue.
(3)Replace pulley/fly wheel without any oil on seal.
(4)Run machine
I f this procedure fails to cure leak,then replace seal with
New seal-see parts list for number
Machine feed stops or is erratic
( (1)Clean feed grips and feed wheel with lightly oil and replace.
( (2)Replace feed grips and retaining grip
Oil leaks from cross head shield or stitch
length adjuster slot
Check return pipe on oil distributor is not blocked.
I f so, then oil can overflow over the top the top of the
Distributor and cause excessive oil splash
Excessive looper play
Check cam ball.Replace if necessary.
Machine is noisy
Check play in carriage eccentric and strap eccentric.Replace
if necessary

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