UnionSpecial 50000 Series Setup guide

CATALOG NO.
T129 VF
Second Edition
S TY LES
563 00VF
56 300VG
®
Finest Quality
Adjusting instructions and
illustrated parts list
l
u
Series 50000 - M achines
with "Air-Kiipp ®" Chain Cutte r
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CATALOG NO. Tl29VF
(SUPPLEMENT TO CATALOG NO. 129M)
ADJUSTING INSTRUCTIONS AND
ILLUSTRATED PARTS LIST FOR
SERIES 50000
MACHINES WITH AIR-KLIPP ®
VACUUM TYPE CHAIN CUTTER
STYLES
56300 VF 56300 VG
Second Edition
©1977'
1982
By
Union Special Corporation
Rights Reserved in All Countries
Printed in U.S.A.
June, 1982
2
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IDENTIFICATION OF MACHINES
Each UNION SPECIAL machine is identified by a Style number on a name plate on
the machine. Style numbers are classified as standard and special. Standard Style
numbers have one or more letters suffixed, but never contain the letter "Z".Example:
"Style
56300 VF". Special Style numbers contain the letter "Z". \~hen only minor
changes are made in a standard machine, a "Z" is suffixed to the standard Style
number. Example: "Style 56300 VFZ".
Styles of machines similar in construction are grouped under a class number
which differs from the style number, in that it contains no letters. Example:
"Class 56300".
APPLICATION OF CATALOG
This catalog is a supplement to Catalog No. 129 M, Fifth Edition, and should be
used in conjunction therewith. Only those parts which are used on Styles 56300 VF
and 56300 VG, but not used on Styles 56300 F or 56300 Gare illustrated and listed
at the back of this book. For clarity, certain 56300 F and 56300 G parts are shown
in phantom to assist in locating the 56300 VF and 56300 VG parts.Opposite the illus-
tration pages, parts are identified by a reference number, part number, description
and amount required. Any part that is a component of another part is indicated by
indenting its description under the description of the assembly or base part. Always
use the part number in the second column, never use the reference number in the
first column when ordering repair parts.
This catalog applies specifically to the Standard Styles of machines as listed
herein. It can also be applied with discretion to some Special Styles of machines
in this class. References to direction, such as right, left, front, back, etc., are
given
from the operator•s position while seated at the machine. Operating direction
of handwheel is toward the operator.
STYLES OF MACHINES IN CLASS 56300
Advanced High Speed Single Needle Flat Bed Machines, Medium Throw, Needle Bear-
ing
Needle Bar Drive, Light Weight Presser Bar and Needle Bar Driving Mechanism,
Single Reservoir Enclosed Positive Automatic Lubricating System, Filtered Oil Return
Pumps for Head and Base, Lateral Looper Travel, Large Handwheel and Improved Belt
Guard, Indexed
Thread Ratio Control Parts, "Air-Klipp" Vacuum Chain Cutter, prepared
for use with Knee Press for Presser Foot Lifter, Equipped with Disc Thread Tensions,
Maximum Work Space to Right of Needle Bar 8 1/4 Inches (209.6 mm).
56300 VF Equipped with thumbscrew adjustable frame needle thread eyelet and
feeding presser foot, for seaming operations such as attaching pocket facings, run-
stitching pocket and cuff flaps and siMilar operations on koratron or permanent press
materials.
Seam Spec. 401-SSa-1. Type 128 GBS needle. Maximum recommended speed
6500 R.P.M.
56300 VG Equipped with thumbscrew adjustable needle thread frame eyelet, for
seaming trousers, coats and for similar operations on precured perma-oress material.
Seam Spec. 401-SSa-1. Type 128 GBS needle. Maximum recommended speed 6500 R.P.M.
3
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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 the largest diameter of blade, measured mi dway be tween
shank and eye. Collectively, type and size numb er represent the complete symbol,
which is given on the label of all needles packaged and sold by Union Special.
Standard
recommended needle for Styles 56300 VF and 56300 VG is Type 128 GBS. It
has a round shank, round point, short, double groove, struck groove, ball eye, spot-
ted, ball point, chromium plated and is available in sizes 080/032,090/036 , 100/040,
110/044, 125/049, 140/054,
060.
To have needle orders promptly and accurately filled, an empty package, a sample
needle, or the type
and size number should be fo rwarded. Use description on label. A
complete order
would read:
11
1000 Needles, Type 128 GBS, Size 080/032
11
•
Selection of the proper needle size should be determined by siz e of thread used.
Thread should pass freely through needle eye in order to produce a good s titch for-
mation.
USE GENUINE REPAIR PARTS
Success in the operation of these machines can be secured only with ge nuine
UNION SPECIAL repair parts as furnished by the Union Special Corporation, its sub-
sidiaries and authorized distributors. They are designed according to the most ap-
proved
scientific principles, and are made with utmost precision. Maximum e fficiency
and durability are assured.
IDENTIFYING PARTS
Where the construction permits, each part is stamped with its part number. On
some of the smaller parts and on those where construction does not permit, an ident-
ification letter is stamped in to distinguish the part from similar ones.
Part
numbers represent the same part, regardless of catalog in which they
appear.
IMPORTANT! ON ALL ORDERS, PLEASE INCLUDE PART NAME AND STYLE OF MACHINE FOR
WHICH PART IS ORDERED.
TERMS
Prices are strictly net cash and subject to change without notice. All shipments
are forwarded
f.o.b. shipping point. Parcel Post shipments are insured unless other-
wise directed. A charge is made to cover postage and insurance.
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FILL
MAIN
RESERVOIR
HERE
CAUTION!
FOR CORRECT
OIL LEVEL
NEEDLE OF GAUGE
SHOULD BE IN
OPERATE POSITION
FILL ALL OIL RESERVOIRS
BEFORE STARTING.
MACHINE HAS BEEN DRAINED
BEFORE SHIPPING.
Fig . 1
THREADING AND OILING DIAGRAM FOR STYLES 56300 VF and VG.
The oil has been drained from the machin e before shipping and the reservoir must
be filled before starting to operate. Maintain oil level in "OPERATE" position and
add oil when needle is to the black line located to the left of the "OPERATE" zone
marked "LOW". The machine is automatically lubricated and no oiling other than keep-
ing the
main reservoir filled is necessary. For further lubricating instructions
refer to paragraph on "LUBRICATION" and "RECOMMENDED OIL".
Thread machine Styles 56300 VF and VG in accordance with the above threading
diagram.
5
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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 Corporation 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 need-
le will reaister on black line marked
11
FULL
11
• Oil must
be added when gauge needle registers on black line mark-
ed
11
LOH'
1•
Although the machine can be operated safely
when gauge needle registers in the
11
0PERATE" 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 lower 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 directly
oil needle bar link and needle bar. Replace 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
distribution.
ADJUSTING INSTRUCTIONS
OIL GAUGE CALIBRATION
To recalibrate oil gauge, follow instructions in sequence as listed:
-Place machine upright on a level surface.
Fig. 2
-
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
LOW
11
•
-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
•
6
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SYNCHRONIZING LOOPER AND NEEDLE MOTIONS
Insert looper into the looper rocker,
pushing
it all the way down and tighten
screw against flat on shank of looper.
Turn handwheel in operating direction un-
til the point of the looper {A, Fig. 3)
moving 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 hand-
wheel in the reverse direction until the
point of 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 respect to the looper point
are the
same, looper and needle motions
are synchronized - a variation of
.005
inch (.127mm) is allowable. If the dis-
Fig. 3 tance from the eye of the needle to the
point of the looper
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 Proper SYN CHRONIZATION of
Looper & Needle
these tw o Dimensions will be the s am e
J
~ J v~
1164"
1/64"
(.4mm) (.4mm) --
--
-r
-~~~ - l
Looper in
FRONT of
Ne e dl e N
ee dl e
in in
OPERATING REVERSE
Direction
Direction
Fig. 4
Fig. 5
NOTE: The 1/64 inch (.4rrm) 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 ad-
justing screw (E). Tap or pull slightly as required
to position
shaft for proper synchronization. Tighten
screw (C) securely and remove rod or screw used to
position
shaft. Loosen lock nut {F) and TORQUE thrust
adjusting screw (E) to 6 in. lbs. (7cm/kg); re-tight-
en lock nut (F) securely.
7
With looper at extreme right end of
its travel, check location of the center-
line of right looper connecting rod bear-
ing using
gauge No. 21227 CX. Remove nut
from looper lever stud {A, Fig. 5) and
place hole in gauge (B) over threaded
stud.
The left end of gauge should locate
against the
RIGHT side of looper rocker
cone (C). If adjustment is necessary,
loosen
clamp screw (D), reposition looper
drive lever
(E) as required and retighten
screw
(D). If gauge is not available,
setting can be checked with a scale. Dim-
ension from centerline of stud (A) to
centerline of
cone (C) which should bt
4 1/16 inch (103.3mm).
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SETTING THE LOOPER
Insert a new needle, type and size as speci-
fied. Looper gauge is 5/32 inch (3.97mm) for
Styles
56300 VF and 56300 VG. Set the looper
(A, Fig. 6) so the distance from the center of
the needle
(B) to the point of the looper (A) is
5/32 inch (3.97mm), when the looper is at its
farthest position to the right. Looper gauge
No. 21225-5/32 (C, Fig. 5) can be used advan-
tageously in
making this adjustment. If adjust-
ment is required, loosen nut (D) (it has a left
hand thread) and nut (E) on connecting rod (F),
turn the connecting
rod forward or backward to
obtain the 5/32 inch
(3.97mm) dimension. Re-
tighten both nuts, first nut (E), then nut (D).
Make sure the left ball joint is in vertical
position and does not bind after adjustment.
Fig. 7
The looper is set correctly in
line-of-feed, if, as it moves to the
left, behind the needle, its point
(A, Fig. 7) brushes, but does not pick
at the rear of needle (B).
If adjustment is necessary,loosen
lock screw
(G, Fig. 6) and turn stop
screw
(H) as required. Turning stop
screw clockwise
sets the looper to the
rear and turning it counterclockwise
acts the reverse.
Holding looper to
the
front while making this adjustment
may prove helpful. Tighten lock screw
when setting is obtained and recheck
the adjustment.
SETTING HEIGHT OF NE E DLE BAR
The height of the needle (C, Fig. 8) is correct wh en
the top of
its eye is l/64 inch (.4mm) below the underside
of the looper, with the looper point flush with the left
side of the needle (See Fig. 4).If adjustment is necessary,
loosen screw
(B, Fig. 8) and move needle bar (A) up or down
as required and ret ighten screw.
A
Fig. 6
Fig. 8
Th e needle mu st have equal clearance on the right and left sides of the needle
slot in throat plat e. The descending needle must be deflected on the back of the
looper.
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SETTING THE FEED DOG
Set the feed dog (A, Fig. 9) in the throat plate (B) so there is equal clearance
on all sides. See that the tips of the teeth extend the depth of a tooth or approx-
imately 3/64 inch (1.19
mm) above the throat plate
and are parallel with the throat plate at high
point of travel. Adjust the support screw (C),
under the feed dog, to maintain this setting.
Screw (D) is used to hold feed dog in position.
Fig. 9 If feed dog teeth are not parallel with the
throat plate, loosen nut (A, Fig. 10) and turn
screw
(B) clockwise to lower the front teeth, or counterclockwise to raise the front
teeth. Retighten nut when feed dog is set properly.
Fig.
10
Should it be necessary to move the feed dog to the
left or right, loosen screws (A, Fig. 11) which hold the
feed rocker
(B) onto the feed rocker shaft (C), and move
feed rocker to desired position and retighten screws.
Make sure the feed rocker arm (D) does not bind after
making this adjustment.
When handwheel is turned in operating direction the
feed
dog should have equal clearance on both ends of the
throat plate slots with feed travel set to desired
stitch 1ength.
Should it be necessary to move the feed dog forward
or backward, loosen nut (E, Fig.
11) which clamps the
feed rocker
arm to the feed rocker and move the feed
rocker forward or
backward as needed and retighten nut.
CHANGING STITCH LENGTH
Set the stitch to required length. This is accomplished by loosening locknut
(F, Fig.
11) 1/2 turn (it has a left hand thread) on the end of the stitch regulating
Fig.
11
9
stud and turning the stitch adjust-
ing screw (G) located under the left
end of the cloth plate, in the head
of main shaft (H), which is marked
with
11
L
11
and
11
S
11
• Turning the screw
clockwise shortens the
stitch (moves
stitch regulating stud toward the
11
S
11
) and turning it in a counter-
clockwise
direction lengthens the
stitch (moves stitch regulating stud
toward the
11
L
11
). Retighten locknut
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).
NOTE: Any change in stitch length
will
necessitate a corresponding
change in
rear needle guard setting.
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CHANGING STITCH LENGTH (Continued)
Machines having needle bearings in the feed rocker at .locations
(L. Fig. 11)
may require repacking after years of service. Bearings
should
be tnroughly cleaned and repacked with Union Special Corpor-
ation grease No. 28604 P.
SETTING REAR NEEDLE GUARD
Set rear needle guard (C, Fig. 10) horizontally so that it does
not quite contact the rear of needle (D) when at its most forward
point
of travel. A clearance of .005 inch (.127mm) is permissible.
It should be set as low as possible, yet have its vertical face ap-
proach within about 3/64 inch
(1.19mm) of the needle, until the
point of looper (E),
moving to the left, is even with the needle.
To move needle guard forward or backward, loosen screw (F), move
needle guard as required, and retighten screw. To raise or lower
needle guard, loosen screw (F),
and turn screw (G) clockwise to
lower needle guard or counterclockwise to
raise it. Retighten screw
(F) after guard is properly set.
NOTE: Any change in stitch length will require a change in
rear needle guard setting.
THREAD TENSIONS
Tension on the needle thread should be only sufficient
to produce uniform stitches on the under surface of the
fabric.
Pull needle thread through the eyelets and set the
needle thread tension
at 3 ounces (85.05 gr).
Looper thread tension is applied at the cast-off sup-
port tension disc assembly,
and the adjusting nut should
be set so that the tension on looper thread is just suf-
ficient to steady the thread.
THREAD TENSION RELEASE
Thread tension release is set correctly when it be-
gins to function
as the presser foot is raised to within
1/8 inch
(3.17mm) of the end of its travel and is entire-
ly released when the presser foot has reached its highest
position.
If adjustment is needed, loosen tension release lever
Fig.
12
Fig. 13
screw (A, Fig. 12), located at the back of the machine and move tension disc separ-
ator as required. Retighten screw. After adjustment there should be no binding at
any point.
PRESSER BAR HEIGHT (FOR 56300 VG)
Height of presser bar (D, Fig. 13) is set correctly if it is possible to remove
the presser foot when foot lifter lever (B, Fig. 12) is fully depressed.
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