UnionSpecial 63400 Series Instruction sheet

From the library of: Superior Sewing Machine & Supply LLC
®
QUALITY
STYLES
63400A
634008
CATALOG ·
No.
121 M
SECOND
EDITION
Ztnu,n~
L E W I s® • C O L U M B I A®
CLASS 63400
STREAMLINED
INDUSTRIAL
SEWING
MACHINES
HIGH SPEED LOCKSTITCH MACHINES
UNION SPECIAL CORPORATION
CHICAGO

From the library of: Superior Sewing Machine & Supply LLC
Catalog No. 121 M
INSTRUCTIONS
FOR
ADJUSTING AND OPERATING
LIST OF PARTS
CLASS 63400
Streamlined Lockstitch
Styles
63400 A 63400 B
Second Edition
@ 1961
By
Union Special Corporation
Rights Reserved in All Countries
UNIO N SPECIAL CORPORATION
INDUSTRIAL SEWING MACHINES
CHICAGO ·
Printed in U.S.A.
2
August, 1981

From the library of: Superior Sewing Machine & Supply LLC
IDENTIFICATION OF MACHINES
Each UNION SPECIAL machine is identified by a Style number which is stamped into the 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
63400 A". Special Style numbers contain the letter "Z". When only minor changes are made in
a standard machine, a "Z" is suffixed to the Standard Style number.Example: "Style 63400 AZ".
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 63400
11
•
APPLICATION OF CATALOG
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. Refer-
ence to direction, such as right, left, front, back, etc., are given from the operator's posi-
tion while seated at the machine. Operating direction of the handwheel is toward the operator.
STYLES OF MACHINES
High Speed Streamlined Long Arm Lockstitch Machines, One Needle, Light, Medium and Heavy Duty,
Drop Feed, Rotary Hook, Horizontal Hook Shaft, Push Button Stitch Regulator, Stitch Length In-
dicator, One Reservoir Enclosed Automatic Lubricating System, Head Oil Siphon, Adjustable Hook
Oil Control, Automatic Head Oiling, Needle Bearing Adjustable Feed Eccentric, Needle Bearings
for Take-up Lever and Needle Bar Driving Link, Feed Timing on Lower Main Shaft, Maximum Work
Space to Right of Needle Bar 11 1/8 Inches,
*63400 A For miscellaneous plain seaming operations on light and medium weight work, 1 9/64
inch needle bar travel. Type 183 GXS or 183 GYS needle. Specify presser foot, throat
plate, feed dog, stitches per inch, thread size, needle type and size, attachments and
guides.
63400 B For miscellaneous plain seaming operations on medium and medium heavy weight work,
1 13/64 inch needle bar travel. Type 180 GXS or 180 GYS needle. Specify presser foot,
throat plate, feed dog, stitches per inch, thread size, needle type and size, attachment
and guides.
* DISCONTINUED - In most instances, component parts can be ordered for customer repair.
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 the blade measured across the eye. Collectively, the type number
and
the size number represent the complete symbol.
Needle Type 180 GXS or 180 GYS is recommended for Style 63400 Band needle Type 183 GXS
or 183 GYS is recommended for Style 63400 A. Their description and the sizes available are
listed below.
Type
No.
180 GXS
180 GYS
183 GXS
183 GYS
Description and Sizes
Round shank, round point, lockstitch, short length, ball eye, single groove,
wide angle groove, struck groove, deep spot, ball point, chromium plated -
sizes 075/029, 080/032, 090/036, 100/040, 110/044, 125/049, 140/054, 150/060.
Round shank, round point, lockstitch, short length, ball eye, single groove,
wide angle groove, struck groove, deep spot, chromium plated - sizes 075/029,
080/032, 090/036, 100/040, 110/044, 125/049, 140/054, 150/060.
Round shank, round point, lockstitch, extra short length, ball eye, single
groove, wide angle groove, struck groove, deep spot, ball point, chromium
plated - sizes 025, 075/029, 080/032, 090/036, 100/040, 110/044.
Round shank, round point, lockstitch, extra short length, ball eye, single
groove, wide angle groove, struck groove, deep spot, chromium plated - sizes
028, 080/032, 090/036, 040, 044.
3

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NEEDLES (Continued)
To ha ve needle orders promptly and accurately filled, an empty packa g e, a
sampl e ne e dle, or the type and size numb er should be forwarded. Use descrtption
onlab e l. A complete order would read:
11
1000 Needles, Type 180 GXS, Siz e 080/032'~
Selection of proper needle size should be de termin ed by the siz e of th e thread
u se d. Thread should pas s fr e ely through th e needl e eye in ord er to produc e a good
stitch formation.
SELECTING THE SIZE OF THE NEEDLE
The strength requirement of the seam produced -.is lar g ely dependent upon the
size of the th r ead employed.
The followin g table shows the preferred size of needle for a g iv en size and kind
of thread. The choice, however, should g ive consideration to factors r efe rr e d to
above, which may dictate the selection of a needle size sli g htly lar g er or smaller
than the size specified.
Cotton Thread
Size
0
30
36
40
50
60
70
80
90
100
Mercerized Thre ad
Size
B
A
A
0
00
000
0000
0000
IDENTIFYING PARTS
Ne edle
Size
15 0/060
140/054 to 150/060
125 / 049 to 140/ 054
110/044 to 125/049
110/044 to 125/049
100/ 040 to 110/ 044
090/036 to 100/040
080/ 032 to 090/ 036
080/ 032 to 090/ 036
075/ 029 to 080/ 032
Where the con s truction permits, each part is st a mp ed with it s part numb e r.
P a rts too small for a complete catalog stampin g are identified by letter symbols
which distingui sh one part from another that is similar in appearance.
Pa rt numb ers r e pre se nt the same part, re ga rdless of the cat a lo g in wh ic h th ey
a
pp ea r .
IMPORTANT ! ON ALL ORDERS, PLEASE INCLUDE PART NAME AND ST Y LE
OF MA C HINE FOR WHIC H P ART IS ORDER ED .
4

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ORDERING OF REPAIR PARTS
ILLUSTRATIONS
The arrangement of this catalog is to facilitate easy and accurate ordering of
Class 63400 replacement parts.
Six exploded view plaues cover the Standard Styles listed in this catalog. Each
plate presents a sector of the machine, parts being aligned as in their assembled po-
sition. Small keyline views show by a blackended area exactly where the parts being
discussed fit in the assembled machine. On the page opposite the illustration will be
found a listing of the parts with their part numbers, descriptions and the number of
pieces required in the particular view being shown.
Numbers
in the first column are reference numbers only, and merely indicate the
position of the part in the illustration. Reference numbers should never be used in
ordering parts. Always use the part number listed in the second column. Each exploded
view plate carries a reference number for each part for sale.
Sub-assemblies, which are sold complete, or by separate part, are in a bracket
or a solid line box on the picture plate. Component parts of sub-assemblies, which
can be furnished for repairs, are indicated by indenting their descriptions under the
description of the main sub-assembly. Example:
20
21
22
23
29126
DD
61438 B
660-225
88
Feed Driving Eccentric and Connecting Rod Assembly------------ 1
Feed Drive Eccentric Connecting Rod---------------------- 1
Needle Bearing------------------------------------- 1
Set Screw------------------------------------------- 1
In those cases where a part is common to all of the machines covered by this
catalog, no specific usage will be mentioned in the description. However, when the
parts for the various machines are not the same, the specific usage will be mentioned
in the description, and, if necessary, the difference will be shown in the illustra-
tion.
At the back of the book will be found a numerical index of all the parts shown
in this book. This will facilitate locating the illustration and description when
only the part number is known.
USE GENUINE REPAIR PARTS
Success in the operation of these machines can be secured only with genuine
UNION SPECIAL Repair Parts as furnished by the Union Special Corporation, its subsid-
iaries and authorized distributors. They are designed according to the most approved
scientific principles, and are made with utmost pr e cision. Maximum efficiency and
durability are assured.
TERMS
Prices are strictly net cash and subject to change without notice. All shipments
are forwarded f.o.b. shipping point. Parcel Post s hipments are insured unless other-
wise directed. A charge is mad e to cover the postage and insurance. ·
5

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INSTALLING
CAUTION! When unpack ing, DO NOT lift machine out of box by placin g one hand on handwheel. Usin g both hand s
on
bed casting, h ft g ently .
Before leavin g factory, each UNION SPECIAL machine is sewed off, inspected and carefully packed, After the
mac h i ne and accessories have been removed from the packin g box, the followin g steps should be followed :
PREPARATION OF MACHINE FOR INSTALLATION
A ba g of assembly parts, consisting of one frame thread eyelet , one eyelet attachin g screw, one extra bobb in, two
hi nge studs, and two screws for holdin g miscellaneous attachments to the be d plate, is packed wi th each machine.
Insert hin ge studs in holes provided for them in rear of cloth plate. Assemble the upper frame eyelet (A, F i g. 2).
STANDARD ACCESSORIES
Included also with each machine is a box of STANDARD ACCESSORIES--conta i nin g one bobbin winder assembly, th e
machine mountin g frame, one oil drain jar and its clamp sprin g, one knee lifter assembly and i ts rubber pad , bed
positionin g sprin g and screw, four isolator pads and c ips, and one mach i ne rest pin. These parts are ess e ntial wh n
set ti ng up the mach i ne.
TABLE TOPS
Lockstit ch machines are i nstalled m table tops, prepared with cut-out, so that the bed plate is FLUSH wi th the top
of the machine mountin g frame.
MACHINE MOUNTING FRAME INSTALLATION
On a suitable ta bleboard, place mach i ne mount ing frame (21393 N) in the mac hi ne cut-out with the hin ge lu g s to the
rear (F ig. 1). Inse rt the countersunk wood screw throu gh left hinge pad and ti g hten se c urely. As semble bed po si t i onin g
sprin g (63474 A) over ri g ht hin ge pad; insert round head w ood screw and tig hten securely. Assemble the retain ing plate
(213 93 R) to outside front of pan section, as shown, and snu g up nuts li g htly.
Place sew ing head in the frame mountin g, and af ter be ing sure there is about 1/ 16 inch clearance betw e en the cloth
plate ed ge and the frame sides, rap the retain ing plate smartly upward with a hamme r to insure a g ood g rip on the
u nders id e of the board and ti g hten lockin g nuts securely.
Tip mach i ne ba ck a gai nst rest pin, and assemble the knee press assemb ly as shown. A ll end play of the c ross shaft
should be taken up by t he cone bearin g s, but must not bi nd.
2 28 46Q- l6
6347 6
6347 6A ---
TABLE
BOAR D
il 663 D
21393N _/ &._
61477
Fig. 1
6

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INSTALLING (Continued)
MA C ffiNE MOUNTING FRAME INSTALLATION (Continued)
Before the machine is put into production, the bell crank (21665 J) of the knee lifter rod should be
adjusted. The left stop screw (22597 F) should be set so that the maximum lift of the presser bar and its
parts do not interfere with moving parts within the head. This may be done by settin g the s top s crew so that
the presser bar raises approximately 5/16 inch.
BOBBIN WINDER
The bobbin winder should be secured to the table top so that its pulley will be locat ed directly in front of
the sewin g machine belt and will bear ag ainst the belt when in operation. The base of the winder has two
elongated attaching holes, which allow the mechanism to be moved closer to or farther away from belt as
needed. The pulley of the winder, when in operation, should exert only enough pressure ag ainst the belt to
wind the bobbin. Regulation and operat i on of the bobbin winder is described under "Windin g the Bobbin",
under OPERATOR'S INSTRUCTIONS.
BELTS
These machines are equipped to use either #1 "Vee" or round belts.
Fig. 2
7

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LUBRICATION
CAUTION! Oil has been drained from the main reservoir before shipment and the
reservoir must be filled before starting to operate.
Lubricate machine thoroughly, in accordance with instructions which follow, and run
slowly for several minutes to distribute the oil to the various parts. Full speed operation
can then be expected without damage.
RECOMMENDED OIL
Us3 a stainless water-white straight mineral oil ofa Saybolt viscosity of 90 to 125 seconds
at 100 Fahrenheit in the main reservoir. This is equivalent to Union Special specification
No. 175. Fill main reservoir at plug screw (B, Fig. 2) and check oil level at gauge (C); oil
is at maximum level when needle is in yellow band marked "full". Oil should be added when
needle is in yellow band marked "low".
It is recommended that a new machine, or onethathasbeen out of servicefor an extended
period, be lubricated as follows: Remove the end cover and directly oil the bearings of the
needle bar link, take-up and its lever and needle bar. Replace end cover as no further hand
oiling will be required.
CAUTION! The machine is provided with automatic or manual head mechanism oil
control. The oil control dial (D, Fig. 2) is shown in the automatic oiling position, and should
manual giling of the head mechanism be desired, remove locking screw (G, F i g. 2) and turn
dial 180 to expose the manual oiling port. In the manual oiling position, five or six drops of
oil should be introduced into the oiling port twice daily - preferably at starting time and
mid-day.
Oil may be drained from main reservoir by removing plug screw (F, Fi g. 2).
OIL GAUGE
The oil gauge is set at the factory to show the proper oil level in the reservoir. Should
an adjustment become necessary, the following steps should be followed:
1. Place the machine upright on a level table or bench.
2. Remove the reservoir plug screw (located below the handwheel and near the bottom of the
machine).
3. Oil should be added or removed so that th e oil level is approximately 1/ 8 inch below the
bottom edge of the hole.
4. Loosen the lock nut on the calibratin g screw, and turn the screw left or right so that the
gauge needle rests on the ye llow band marked
II
FULL" on gauge ( C, Fig. 2).
5. Tighten lock nut and replace plug screw.
Fig. 3
L ubrication ofthe mechanism below the cloth plate
is automatically accomplished through the feed driving
shaft (D, Fig. 3), which is tubular. Oil is i ntroduced
into the shaft at the sp r ocket e nd by means of an oil
distributing plate (A, Fig. 3) which is secur ed to the
bottom cover (B) by means of two scr e ws ( C).
Should it become necessary to remov e th e re s ervoir
cover, it is imperative that the adju stm ent of the oil
distributing plate (A) be checked very c are fully . This
can be done by removing the large plu g s crew at the
right end ofthe reservoir and l oo k in g throu gh the hole.
The low point of the oil distributing plat e mu st be eve n
with or slightly below the center of shaft (D) and just
touching it.
8

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SEL F- P RIMING HEAD OIL SIPHON
Class 63400 mach in es ar e e quipp ed with a self-priming head oil siphon. When th e
machine is started, oil spl a sh es on th e primin g cup felt, filters through the felt and trickles
down the vertical oil tub e, thus priming th e si phon. Once the prime is established, it is
maintained, unless the f elt s ar e r e mov ed. Th e siphon operates twenty-four hours a day,
removing oil that accumulates in the head, even when the machine is not running.
614 94 L
Scr e w----.J.:
61494 N
r-----~':'---- Retainin g
£ND
INST ALLING AND MAINTENANCE OF OIL SIPHO N
Gromm et
666-237
Primin g
Cup
Felt
63 494 D
Oil Siphon
63994 B
Oil Tube
The felt in the priming cup is designed for a sp e cific purpose. This felt, No. 666-23 7
is thin and relatively dense to meter the flow of priming oil and to prevent the entrance of
air. The felt, at the intake of the siphon, keeps the siphon clear of lint, and prevents th e
entrance of air at that point.
A newly installed siphon starts its act i on w ithin five to ten minutes after the ma chine is
operating. However, it may be forty minutes or so be fore the air is removed from the line
and the siphon is in full operation.
When a customer receives a new machine, it ha s probably been tu rned upside do wn in
shippin g, oil has accumulated in the head, a nd the siphon may not be pr i med. It will,
however, automatically reprime itself when run. After the first day of operation, th e
siphon can be checked by inspecting the tygon tube at the junction visible at the pr ess er foot
lifter arm to be sure it is full of oil.
The siphon may also be checked by removin g the head cover and w ett ing th e i nl et f elt
with oil. The felt should visibly dry out as the oil is drawn into the s iphon.
If the siphon felts become clogged and the siphon does not fu nction pr op e rly, ch an ge th e
felts as follows:
To change th e inlet fe lt, remo ve the inlet tube with th e ty g on tub e disconn e ct ed only at
the column end. Repl a ce the felt and reassemble.
To change the prime cup felt, fir st remov e th e acce ss plu g screw at th e r ear of the
column. Remove felt with a tweezers. Replace with a new felt bein g sur e the f elt is pushed
down ti ghtly into the prime cup.
9

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INSTRUCTIONS FOR OPERA TORS
THREAD
While the direction of the twist in the bobbin thread is immaterial, the direction
of the hook rotation favors the use of a left twist thread in the needle. To determine
the direct i on of twist, grasp a short length of thread between thumb and forefinger
of each hand. Turn the thread a way from you with your right hand. If the strands
unwind, it is a left twist, if not, it is a right twist.
REMOVING THE BOBBIN CASE
To remove the bobbin case, turn handwheel in operating
direction until the needle reaches its highest position. Using
the left hand, reach under the table, open the bobbin case
latch (A, Fig. 4), and pull the bobbin case out of the sewing
hook.
Fig. 4
WINDING THE BOBBIN
Opening the latch retains the bobbin in the case. When
the latch is closed, the bobbin is released and can readily
be removed.
Thread the bobbin winder by leading the thread
from the supply down through the eyelet (A, Fig. 5),
down between the tension discs, and under the tension
post. Press an empty bobbin on the winder shaft (B)
up to the stop, wind the end of thread around the bobbin
a few turns in a clockwise direction, and press down-
wardly on hand lever (D) until pulley is moved into
contact with machine belt, and is locked in that
position. When the machine is operated, the bobbin
will be rotated and filled until the thread engages the
automatic throw-out member, which disengages the
pulley. The extent to which the bobbin is filled can be
varied by regulating the screw ( C).
The tension post bracket is mounted on the winder
base, and can be shifted from left to right by loosening
screw (E) so that any tendency of the bobbin to wind
unevenly may be readily corrected.
The purpose of the bobbin winder is to assure an
Fig. 5
operator of a full bobbin at all times. When the bobbin in the machine is used up,
replace it with the full one, and begin to wind the empty one immediately. Bobbins
can be rewound while the machine is sewing.
Fig. 6
THREADING THE BOBBIN CASE
The bobbin case should beheld between the thumb,
forefinger and second finger of the LEFT hand
(A, Fig. 6).
The bobbin itself should be held between the thumb
and forefinger of the right hand (B, Fig. 6) with
thread coming off the bottom of the bobbin.
10