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10

SETTING THE LOOPER GAUGE (CONT.)

Move the needle guard to the side so the needle will not strike it.  Turn the handwheel in operating direction
until the looper holder frame has travelled fully to the rear.  At this time the distance between the centerline
of the needles and the points of the loopers should be 1/8" (3.2mm) . If adjustment is necessary loosen
hexagon head clamp screw (D, Fig. 6 Inset) at the right end of looper holder driving arm (E) and move forward
or backward as required.  Tighten screw (D) and recheck settings.

SETTING THE NEEDLE GUARDS

The needle guard screws (A, Fig. 7) cannot be accessed
once the loopers are tightened so the needle guards must
be set first.  Loosen looper screw (B) and swing the looper
to the side so the needle will not strike it.  Do not remove
the looper because the needle guard looper hole must
remain aligned with the hole in the looper holder.  Turn the
handwheel in operating direction until needles (C) are at
their lowest point of travel.  Position needle guard (D) so it
touches but does not def lect the rear of needle (C).  Tighten
needle guard screw (A).

SETTING THE LOOPERS

Turn the handwheel in operating direction.  When each
looper (A, Fig. 8) moves forward the point should pass the
left side of needle (B) with a clearance of 0.000" to 0.003"
(O.OOMM to 0.08MM).

SETTING THE RETAINERS

The retainers must be adjusted as close as possible to the
top of the loopers without touching them and also set from
the right to left for proper stitch formation.

Insert retainers (A, Fig. 9) into retainer holder bar (B) with
the notched ends 1/32" (0.8mm) from the needles and the
side of the notches facing the needles and tighten screws
(C).

Loosen screws (D) in the retainer holder bar connection bar (E) and rock bar (B) so the underside of the
retainer is as close as possible to the top of the looper without contacting it.  Position the needle bar as
high as possible and pull looper throw-out plunger knob (F) to the left, releasing the looper holder.  Make
sure the loopers do not hit the underneath side of the retainers.

Summary of Contents for 54200J-12-16

Page 1: ...ADJUSTING INSTRUCTIONS MANUAL NO INS9203 STYLES 54200J 12 16 54200 SERIES REV 10 22 98 ...

Page 2: ...operating and adjusting these machines will enable youtomaintainthesuperiorperformanceandreliabilitydesignedandbuiltintoeveryUnion Special machine Adjustments are presented in sequence so that a logical progression is accomplished Some adjustments performed out of sequence may have an adverse effect on the function of other related parts This manual has been comprised on the basis of available inf...

Page 3: ...d off for the following Threading needle looper spreader etc Replacing sewing parts such as needle presser foot throat plate looper spreader feed dog needle guard folder fabric guard etc The workstation is unattended or work has been completed for the day For all maintenance work When making adjustments to the machine DO NOT touch moving machine parts while the machines main power switch is turned...

Page 4: ...R GAUGE 9 SETTING THE LOOPER GAUGE CONT 10 SETTING THE NEEDLE GUARDS 10 SETTING THE LOOPERS 10 SETTING THE RETAINERS 10 SETTING THE RETAINERS CONT 11 SETTING THE FEED DOG 11 SETTING THE FEED DOG CONT 12 SETTING THE PRESSER FOOT 12 SETTING THE PRESSER FOOT PRESSURE 12 SETTING THE TENSION RELEASE 13 SETTING THE STITCH LENGTH 13 TIMING THE PULLER 13 TIMING THE PULLER CONT 14 SETTING THE PULLER STITCH...

Page 5: ...or by quilting a portion of the garment using the same color thread in all needles Stitch type 401 Type 113 GS Maximum Speed 4000 R P M 16 gauge only NEEDLES Each Union Special needle has both a type and size number The type number denotes the kind of shank point length groove finish and other details The size number stamped on the needle shank denotes the largest diameter of the blade midway betw...

Page 6: ...y has a number or letter that must correspond with the same number or letter on the needle head and looper eyelets Note that the needles are inserted at a right angle to the needle head with the s carf facing left All needles are thread from right to left All loopers are threaded from back to front THREADING ...

Page 7: ... meters This is accomplished by using wrench screwdriver etc Many of these devices are available which when set at the proper amount of torque will tighten the part to the correct amount and no tighter All straps and eccentrics should be tightened to 19 21 inch pounds 2 2Nm 2 4Nm unless otherwise noted All other nuts bolts screws etc should be tightened by hand as tightly as possible unless otherw...

Page 8: ...ig 3 andmoveneedle bar B up or down Torque screw A to 20 in lbs 2 3Nm CAUTION Care should be taken not to disturb the alignment of the needles in the throat plate when moving the needle bar up or down SETTING THE LOOPER HOLDER REST The looper holder rest must be set so it prevents the loopers looper holder and or the needle guards from striking the looper thread eyelet when the looper throw out pi...

Page 9: ...of the looper holder Thrust E ring F and collar D together to remove all right to left play in looper holder B Tighten collar screws C Note There must be no shake or bind when the handwheel is rotated SETTING THE LOOPER GAUGE Starting from the extreme right with the looperpointfacingtheoperatorinsertlooper A Fig 6 through the back of needle guard B and as far down as it will go into looper holder ...

Page 10: ...direction until needles C are at their lowest point of travel Position needle guard D so it touches but does not def lect the rear of needle C Tighten needle guard screw A SETTING THE LOOPERS Turn the handwheel in operating direction When each looper A Fig 8 moves forward the point should pass the left side of needle B with a clearance of 0 000 to 0 003 O OOMM to 0 08MM SETTING THE RETAINERS The r...

Page 11: ...he retainers SETTING THE FEED DOG The feed dog should be centered in the throat plate from left to right and front to back when the machine is set at the desired stitch length The tips of the teeth on the feed dog must be parallel and protrude 1 32 0 8mm above the throat plate at the highest point of travel To set the feed dog parallel to the throat plate loosen screw A Fig 10 and turn screw B clo...

Page 12: ...TTING THE PRESSER FOOT Assemble presser foot A Fig 13 to presser bar B Make sure that presser bar is fully inserted into presser foot shank Line up the needle slots in the presser foot with the needle slots in the throat plate Tighten screw C If the presser foot is not resting flat on the throat plate the mate rial will not feed properly Loosen screw D and lift presser bar guide E up so there is a...

Page 13: ... 15 at the end of the mainshaft it has a left hand thread Turn screw B clockwise to shorten the stitch or counter clockwise to lengthen the stitch Tighten nut A and torque to 55 in lbs 6 2Nm NOTE If the stitch length is changed the puller stitch length must be changed also TIMING THE PULLER The puller must be timed so it begins to feed material to the rear at the same time the feed dog feeds mater...

Page 14: ...ed if adjustment is necessary remove the top right crank chamber oil cover and loosen ball joint nut A Fig 17 Move ball joint B to the rear of driving shaft seg ment C to produce less SPI a longer stitch length or move the ball joint to the front to produce more SPI a shorter stitch length Tighten nut A after each adjust ment and check for final desired stitch length SETTING THE LOOPER THREAD EYEL...

Page 15: ... the loopers start their travel to the rear Set frame needle thread eyelet A Fig 20 as high as possible without pulling thread through the tensions on the downward stroke of the needle bar Set needle thread take up wire B so the threads contact it at the same time the thread loops leave the points of the loopers ...

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