UnionSpecial Advanced 56100 Series Setup guide

CATALOG NO.
130M
Fourth Edition
STY LE
58100 M
\
I
®
Finest Quality
Adjusting instructio s and
illustrated parts list
Class 56100 - Advanced Series,
bag seaming machines
From the library of: Superior Sewing Machine & Supply LLC

CATALOG NO. 130M
ADJUSTING INSTRUCTIONS AND
ILLUSTRATED PARTS LIST FOR
CL.ASS 56100
ADVANCED SERIES
BAG SEAMING MACHINE
STYLE 56100 M
Fourth Edition
© 1965' 1981
By
Union Special Corporation
Rights Reserved in All Countries
December. 1981
2
From the library of: Superior Sewing Machine & Supply LLC

IDENTIFICATION OF MACHINES
Each UNION SPECIAL machine carries a Style number, which on this Class machine is
stamped into the style plate affixed to the right front of machine.
The serial number is stamped in the casting at the right rear base of machine.
Reference to directions, such as right, left, front or rear, are given relative to
the operator•s position while seated
at the machine.Operating direction of the hand-
wheel is counterclockwise, as viewed from the right end of machine.
CLASS DESCRIPTION
Advanced high speed, single needle, flat bed machine. High throw, needle bearing
needle bar drive,
light weight presser bar and needle bar driving mechanism, enclos-
ed automatic lubricating system, filtered oil return pumps for head and base, later-
al looper travel. Maximum work space to right of needle bar, 8 l/4 inches (209.6mm).
MACHINE STYLE
56100 M Typical application - For seaming medium and large size cotton, light and
medium weight burlap bags. Stitch range 3 1/2 to 7; set at 3 l/2 S.P.I. Seam
specification 401-SSa-1. Maximum recommended speed 6000 R.P.M. sewing at 3 l/2
to 5 S.P.I. and 6500 R.P.M. sewing at more than 5 S.P.I. Recommended speed for
machines operating on a duty cycle of 50% or more is 10% less than maximum.
NEEDLES
Each 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 largest diameter of blade, measured midway between shank
and eye. Collectively, type and size number represent the complete symbol, which is
given on the label of all needles packaged and sold by UNION SPECIAL.
Recommended needle for Style 56100 M is Type 144 G. It has a round shank, round
point, No. 2 bag length, double groove, spotted, short point, chromium plated, and
is available in sizes -054, 200/080, 230/090, 250/100.
Selection of proper needle size is determined by size of thread used. Thread
should pass freely through needle eye in order to produce a good stitch formation.
To have needle orders promptly and accurately filled, an empty package,a sample
needle, or the type
and size number should be forwarded. Use description on label. A
complete order
would read:
11
1000 Needles, Type 144 G, Size 200/080
11
•
3
From the library of: Superior Sewing Machine & Supply LLC

•
Fig. 1
THREADING AND OILING DIAGRAM FOR STYLE 56100 M
Thread machine as indicated above. The looper threading has been enlarged for
clarity.
The oil has been drained from the machine before shipping and the reservoir
must be filled before starting to operate. Maintain oil level in
11
0PERATE
11
position
and add oil when needle is to the black line located to the left of the
11
0PERATE
11
zone marked ''LOW
11
• The machine is automatically lubricated and no oiling other than
keeping the
main reservoir filled is necessary. For further lubricating instructions
refer to paragraph on
11
LUBRICATION
11
•
4
From the library of: Superior Sewing Machine & Supply LLC

SAFETY RULES
A
CAUTION
THIS SAFETY SYMBOL INDICATES YOUR PERSONAL SAFETY IS INVOLVED.
TO PREVENT PERSONAL INJURY:
- All power sources to the machine MUST be TURNED OFF before threading, oiling, ad-
justing or replacing parts.
- Wear safety glasses.
-
All shields and guards MUST be in position before operating machine.
-DO NOT tamper with safety shields, guards, etc., while machine is in operation.
LUBRICATION
Use a straight mineral oil with a Saybolt viscosity of 90 to 125 seconds at 100
degrees F. This is equivalent to UNION SPECIAL Specification No. 175.
Before operating, fill machine with oil at
plug screw (A, Fig. 2). While filling machine
with oil, check gauge (B). When proper oil level
is reached, gauge needle will register on black
line marked
11
FULL
11
• Oil must be added when gauge
needle registers on black line marked
11
LOW
11
• Al-
though the machine can be operated safetly when
gauge needle registers in the
11
0PERATE
11
zone, it
is recommended to always check oil level before
operating to
be sure machine is filled with oil
to the
11
FULL
11
mark. CAUTION: DO NOT over fill
machine.
To drain oil, remove plug screw (C), or low-
er crank chamber cover on back of machine. Oil
must be changed every 2000 operating hours to
minimize
wear.
On new machines, or a machine out of service
for
an extended period of time; lubricate machine
as follows:
Remove head cover, clean out lint, then di-
rectly oil needle bar link and needle bar. Re-
place head cover and fill machine with oil to
proper level.
Run machine at low RPM to ensure
proper lubrication of
components preventing any
damage which may occur from lack of oil distri-
bution.
5
From the library of: Superior Sewing Machine & Supply LLC

OIL GAUGE CALIBRATION
To recalibrate oil gauge, follow instructions in sequence as listed:
-Place machine upright on a level surface.
-
Remove plug screw (C, Fig. 2) and tip machine forward to drain all oil from reser-
voir.
-
Remove lower crank chamber cover on back of machine.
-
Fill reservoir until oil is even with bottom of knee press shaft bushing (D).
- Loosen locknut (E) and rotate calibrating screw (F) as required until gauge needle
registers on the black line marked
11
LOWU.
-Tighten locknut (E), then replace plug screw (C) and lower crank chamber cover.
-
Fill machine with oil until gauge needle registers on black line marked
11
FULL
11
•
SYNCHRONIZING LOOPER AND NEEDLE MOTIONS
Turn handwheel in the operating di-
rection until the point of the looper
(A, Fig. 3) mov i ng to the left, is even
with the left side of needle (B). Note
the height of the eye of the needle with
respect to the looper point
(See Fig. 4).
Turn the handwheel in the reverse direc-
tion
until the point of the looper again
moving to the left, is even with the left
side of needle (See Fig. 4). If the
height of the
eye of the needle with re-
spect to the looper point are the same,
looper and needle motions are synchroniz-
ed- a variation of .005 inch (.127mm) is
allowable. If the distance from the eye
of the needle to the point of the looper
Fig. 3
is greater when the handwheel is turned
in the operating
direction, the looper
drive lever rocker
shaft will have to be moved slightly towards the rear. Moving
the shaft towards the front acts the reverse.
For Prop er SYNCHRONIZATION of
Looper & Needle
these two Dimen si ons will be the same
J
~ J ~ ~
1/84"
1/84"
(.4mm) (.4mm)
-r
-f~~~-l
----
Looper in
FRONT of
Needle Needle
in in
OPERATING REVERSE
Di rection
Direction
Fig. 4
NOTE: The 1/64 inch (.4mm) dimension shown in
Fig. 4
is for final setting of needle bar
height.
Adjust looper drive rocker
lever shaft as
follows:
Loosen screw (C, Fig. 3) in looper drive
lever (D). A
rod of .146-40 thd. or Union Special
Screw No. 22870 A can be threaded into the looper
drive lever rocker
shaft through the center of
thrust adjusting screw (E). Tap or pull slightly
as required to position shaft for proper synchro-
nization. Tighten screw
{C) securely and remove
rod or screw used to position shaft.
6
From the library of: Superior Sewing Machine & Supply LLC

SYNCHRONIZING LOOPER AND NEEDLE MOTIONS (Continued)
Loosen lock nut (F) and TORQUE thrust adj-
justing screw (E) to 6 in. lbs. (7cm/kg);
re-tighten lock nut (F) securely.
With the looper at extreme right end
of travel, check location of the right
looper connecting rod bearing using gauge
No. 21227 ex. Remove nut (A, Fig. 5) and
place hole of gauge over threaded stud.
The left end of gauge should locate again-
st the RIGHT side of looper rocker cone
(B). If adjustment is necessary, loosen
clamp screw (C) and reposition looper
drive lever
(D) as required, then tighten
screw (C).
If gauge is not available, check set- Fig. 5
ting with a
scale. Distance between the
centerline of rocker cone and centerline of looper drive lever stud should be 4 1/16
inch
(103.2mm) as shown in Fig. 5;when looper is at its extreme right end of travel.
LOOPER AND LOOPER NEEDLE GUARD SETTINGS
Insert a new needle, type and size spec-
ified. Looper gauge is 5/32 inch (4.0mm)
which is the distance from point of looper
(A, Fig. 6) to centerline of needle (B) when
looper is at extreme right end of its travel.
Looper gauge No. 21225-5/32 (C) is available
for
this setting. Adjustment can be made by
loosening nut (D),(it has a left hand thread)
and nut (E); turn connecting rod (F) as re-
quired to
attain specified dimension. Hold
connecting rod in position and tighten nut
(E), then nut (D).
NOTE: Be sure that the
left ball joint is in a vertical position and
does not bind after adjustment.
Fig. 6
While turning handwheel in operating direction and the looper (A, Fig. 7) moves
to the left, its point should be set to brush but not pick at rear
of needle (B). Adjustment can be made by loosening screw (G, Fig.
6), turn stop screw (H) clockwise to move looper towards the rear,
counterclockwise acts the reverse. It is suggested to hold looper
towards the front while
making this adjustment. Tighten screw (G)
after adjustment has been made and recheck movement of looper.
Looper needle guard (attached to looper) should be set to
barely contact the
front of needle without deflecting as looper
moves to left.
NEEDLE BAR HEIGHT
Turn handwheel to position point of looper flush with the left
side of needle.
7
Fig. 7
From the library of: Superior Sewing Machine & Supply LLC

NEEDLE BAR (Continued)
Height of needle bar (A, Fig. 8) is correct when the top of the eye of needle (B) is
Fig. 8
Fig.
10
1/64 inch (.4mm) below the underside of looper as shown in
Fig. 4.Adjustment can be made by loosening screw (C, Fig. 8),
move needle bar (A) up or down as required, retighten screw.
FEED DOG SETTINGS
Feed dog (A, Fig. 9) should be centered in throat plate
(B)with equal clearance on all sides and ends with feed trav-
el set to desired stitch length. At highest point of travel,
tips of feed dog teeth should extend the depth of a tooth or
approximately 3/64 inch (1.2mm) above throat plate and paral-
lel to same. Screw (C) should be set to support feed dog
after screw (D) has been loosened which secures feed dog in
position.
Parallel adjustment can be made by loosening nut(A, Fig.
10) and turn sc· rew (B) clockwise to lower front of feed dog,
counterclockwise acts the reverse.
When properly set, re-
tighten nut
(A).
Right to left adjustment can be made by loosening screws
(A, Fig. 11) and slightly move feed rocker (B) on feed rocker
shaft (C) as required, then retighten screws. Check to ensure
that feed rocker arm (D) does not bind after adjustment.
Forward or rearward centering of feed
dog can be accomplished by loosening nut (E,
Fig. 11), move feed rocker (B) as required
and retighten nut.
CHANGING STITCH LENGTH
Set the stitch to required length.This is
accomplished by loosening lock nut(F, Fig.ll)
Fig. 9 1/2 turn, (it has a left hand thread) on the
end of the stitch regulating stud and turning
stitch adjusting screw (G) located under the left end of the
cloth plate in the
head of the mainshaft (H), which is marked
with
11
L
11
and
11
S
11
• Turning the screw in a clockwise direction
shortens the
stitch (moves stitch regulating stud toward the
11
S
11
) and turning it in a counterclockwise direction lengthens
the
stitch (moves stitch regulator stud toward the
11
L
11
). Re-
tighten the lock nut securely. To prevent destructive damage
to the feed drive bearing, key screw (J) must engage the
11
U
11
shaped key slot in ferrule (K).
The feed rocker assembly may require lubrication and re-
pair after years of operation. This can be accomplished as
follows: Loosen nut (E, Fig. 11) and remove nut (F). Remove
feed rocker arm (D) from machine by rocking s· lightly. Loosen
screws (A) and remove stop collar on right end of shaft (C).
Shaft
can now be withdrawn. Loosen Allen screw (L) and remove
shaft (M). Now repack bearings.
8
From the library of: Superior Sewing Machine & Supply LLC

CHANGING STITCH LENGTH (Continued)
When packing bearings, parts must be clean and grease should be applied directly
from the tube to avoid contamination. Tube of grease can be supplied under part No.
28604 P. Greased bearings are located at (N, P, Fig. 11). If grease sealed bearings
are replaced, they should be pressed in flush with the casting. To assemble, start
tapered end of shafts first, twisting slightly when entering the grease seals to pre-
vent
damage. Check for proper adjustment of feed dog as described under the
11
Feed Dog
Settings
11
• Also check to see that there is no binding at any point.
Fig. 11
Fig. 12
REAR NEEDLE GUARD
Set rear needle guard (A, Fig. 12) horizontally so that it does not quite con-
tact the rear of needle (B). A clearance of .005 inch (.127mm) is permissible. It
should be set vertically so that its vertical face is even with the top of the
needle eye, with needle bar in
low position. To adjust needle guard, loosen clamp
screw (C), move the needle guard on its holder as required and retighten screw.
Stitch length can be changed without a change in the rear needle guard because it is
not attached to the feed bar.
THREADING
Draw looper and needle threads into the machine
and start operating on a piece of fabric. Refer to
threading diagram (Fig.
1) for manner of threading
this machine.
LOOPER THREAD CAST-OFF WIRE
Looper thread cast-off wire (A, Fig. 13) locat-
ed on the take-up shield (B) controls the amount of
slack thread in the system and can be moved to any
position. It should be set laterally so that it is
midway between the two discs of take-up (C) and the
tip parallel with the discs.
9
Fig. 13
From the library of: Superior Sewing Machine & Supply LLC

LOOPER THREAD CAST-OFF WIRE (Continued)
It is usually set towdrd the take-up to almost the limit of its slot so that it bare-
ly
clears the highest point of the take-up. The height and lateral adjustment of the
retainer affects the control of looper thread as looper moves to the left. Ordinarily
it will be set in approximately a horizontal position. More looper thread is given to
the
stitch when the retainer is raised and set towards the take-up. However, if the
retainer is raised too high, the looper thread triangle may be wiped under the blade
of the looper, causing
traingle skips or pulled down stitches. This can be checked by
observing the action of the looper thread as the looper moves to the left.
THREAD TENSIONS
Tension on the needle thread should be only sufficient to produce uniform stitch-
es on the under surface of the fabric. Tension on the looper thread should be just
sufficient to steady the thread.
PRESSER BAR HEIGHT
Height of presser bar (D, Fig. 8) is set correctly if it is possible to remove
the presser foot when the foot lifter lever, located at the back of the machine and
extending above the upper crank chamber cover is fully actuated (pulled to the right).
There should be approximately l/16 inch (l.6mm) clearance between lower surface of the
presser bar connection
and guide (E) and bottom surface of head opening in the bed
when foot lifter lever is released and presser foot lying flat on the throat plate
with feed
dog below throat plate.
Adjustment can be made by turning handwheel to position needle bar at bottom of
stroke.
Loosen screw (F) and while holding presser foot down on throat plate, posit-
ion presser bar connection and guide as required to attain specified clearance and re-
tighten screw.
PRESSER FOOT PRESSURE
Regulate the presser spring regulating screw (A, Fig. 14) so that it exerts only
enough pressure on the presser foot to feed the work uniformly when a slight tension
is placed on the fabric. Turning it clockwise increases the pressure, counterclock-
wise acts the reverse.
SETTING NEEDLE THREAD GUIDE AND FRAME EYELET
Turn handwheel in operating ~irection until
the needle bar reaches its lowest position. Set
needle thread take-up wire (8, Fig. 14) so that
its thread contact surface is approximately 3/16
inch
(4.8mm) above the center of the needle bar
thread
eyelet (C). Lower this setting for a
smaller needle thread loop,
raise for a larger
loop. Set needle thread frame eyelet (D) so that
it is approximately 7/8 inch (22.2mm) above
centerline of its attaching screw (Fig. 14).
TORQUE REQUIREMENTS
Fig. 14 Torque specifications given in this catalog
are
measured in inch-pounds or centimeter/kilo-
grams. All straps and eccentrics must be tightened to 19-21 in. lbs. (22-24cm/kg)
unless otherwise noted.
10
From the library of: Superior Sewing Machine & Supply LLC