39600FS - Nähmaschine Union Special - Kostenlose Bedienungsanleitung

BEDIENUNGSANLEITUNG 39600FS Union Special

SECOND EDITION

Union Special® INDUSTRIAL SEWING EQUIPMENT

CATALOG NO. 127FA

STYLES

39600FA

39600FB

39600FP

39600FQ

39600FR

39600FS

HI-STYLED HIGH SPEED

FOUR AND FIVE THREAD

SAFETY STITCH MACHINES

WITH

LONG 401 STITCH LOOPER TRAVEL

Catalog No. 127 FA

INSTRUCTIONS

FOR

ADJUSTING AND OPERATING

LIST OF PARTS

CLASS 39600

Four and Five Thread Safety-Stitch Machines with

Long 401 Stitch Looper Travel

STYLES

39600 FA

39600 FB

39600 FP

39600 FQ

39600 FR

39600 FS

Second Edition

Copyright © 1973

by

Union Special Corporation

Rights Reserved in All Countries

UNION SPECIAL CORPORATION

INDUSTRIAL SEWING MACHINES

CHICAGO

Printed in U.S.A.

April, 1979

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 39600 FA". 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 39600 FAZ".

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 39600".

The distance between the rows of stitches or between the needles is represented by a gauge number measured in 1/64ths of an inch, going from left to right. The width of overedge is represented by a fraction. Collectively, the gauge number and the width of overedge represent the machine gauge. Example: "5-1/8". Thus, 5-1/8 gauge represents a distance for 5/64 inch between the left needle (401 stitch) and the right needle (503 or 504 stitch) and the 1/8 represents the width of overedge to the right of the right hand needle.

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. Reference 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 away from operator.

STYLES OF MACHINES

Two Curved Needles, Left Needle in Front, Differential Feed, Light to Medium and Heavy Duty Machines, Trimming Mechanism with Spring Pressed Lower Knife, Automatic Lubricating System. Increased 401 Looper Travel.

39600 FA Two loopers, one spreader, four thread dual stitch; 401 double locked stitch on left needle and 503 two thread overedge stitch on right rear needle. Straight upper knife parts. Light to medium duty machine for simultaneously seaming and overedging on sport and dress shirts, ladies' blouses, street and house dresses, coat and jacket linings, pillow cases and similar operations on light to medium weight durable press or conventional materials. Seam specification, (401-503) 515-SSa-2; standard gauge and seam widths are 3-1/8, 5-1/8 and 12-3/16; stitch range, 8 to 16 per inch; cam adjusted main and differential feeds. Maximum recommended speed 6500 R.P.M.

39600 FB Same as Style 39600 FA except three loopers, five thread dual stitch; 401 double locked stitch on left needle and 504 three thread overedge stitch on right rear needle. Seam specification (401-504) 516-SSa-2. Standard gauge and seam widths are 5-1/8 and 12-3/16.

39600 FP Same as Style 39600 FA, except medium to heavy duty and equipped with wide straight upper knife parts, for operations on slacks, jackets, sport shirts, street and house dresses, coat linings, shoulder pads and similar operations on medium to medium heavy weight materials. Maximum recommended speed 6000 R.P.M.

39600 FQ Same as Style 39600 FP, except three loopers, five thread dual stitch; 401 double locked stitch on left needle and 504 three thread overedge stitch on right rear needle. Seam specification (401-504) 516-SSa-2.

STYLES OF MACHINES (Continued)

39600 FR Same as Style 39600 FA, except medium to heavy duty and angular upper knife parts, for operations on slacks, jackets, sport shirts, jacket and coat linings, shoulder pads and similar operations on medium to medium heavyweight materials. Maximum recommended speed 6000 R.P.M.

39600 FS Same as Style 39600 FR, except three loopers, five thread dual stitch; 401 double locked stitch on left needle and 504 three thread overedge stitch on right rear needle. Seam specification (401-504) 516-SSa-2.

SPEED RECOMMENDATION

Class 39600 machines have been tested in their complete stitch range at their maximum rated speeds. Varied field conditions, severity and cleanliness of the sewing operation may necessitate operating at a lower speed. When operating from 50-100% machine running cycle and a longer than recommended stitch length, it may be necessary to reduce the machine's speed by 10-15%.

These machines are precision manufactured and tested sewing machines. To obtain maximum performance, the machine should be operated at 1000 R. P. M. below maximum recommended speed for the first 20 days of field operation. This will minimize readjustment of precision mechanisms.

OILING

CAUTION! Oil was drained from machine when shipped, so reservoir must be filled before beginning to operate. Oil capacity of Class 39600 is seven ounces. A straight mineral oil of a Saybolt viscosity of 90 to 125 seconds at 100^ Fahrenheit should be used.

Machine is filled with oil at spring cap in top cover. Oil level is checked at sight gauge on front of machine. Red bulb on oil level indicator should show between gauge lines when machine is stationary.

Machine is automatically lubricated. No oiling is necessary, other than keeping main reservoir filled. Check oil daily before the morning start; add oil as required.

To maintain maximum recommended speed and serviceability of this equipment when operating continuously, the oil must be changed at least every six months. In no case should oil remain in machine for more than one year.

The oil drain plug screw is located at the back of machine near bottom edge of base. It is a magnetic screw designed to accumulate possible foreign materials which may have entered the crank case. It should be removed and cleaned periodically.

NEEDLES

Each UNION SPECIAL needle has both a type and size number. The type number denotes kind of shank, point, length, groove, finish and other details. The size number, stamped on the needle shank, denotes largest diameter of blade, measured in thousandths of an inch, 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.

Two needles having different lengths are used in these machines. The shorter needle for the overedge stitch, located at the right, is Type 154 GAS. It is a round shank, round point, curved blade, standard length, single groove, struck groove, spotted, chromium plated needle and is available in sizes 055/022, 065/025, 070/027, 075/029, 080/032, 090/036, 100/040, 110/044, 125/049, 140/054, 150/060.

The longer needle for the 401 stitch, located at the left, is Type 161 GS. It is a round shank, round point, curved blade, Class C, double groove, struck groove, spotted, chromium plated needle and is available in sizes 070/027, 075/029, 080/032, 090/036, 100/040, 110/044, 125/049.

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: "1000 Needles, Type 154 GAS, Size 080/032".

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.

Success in the operation of UNION SPECIAL machines can be secured only by use of needles packaged under our brand name, UnionSpecial®, which is backed by a reputation for producing highest quality needles in materials and workmanship and for more than three-quarter of century.

CHANGING NEEDLES

Release pressure on presser foot by turning the presser foot release, bushing (A, Fig. 1 or 1A) and swinging presser arm (B) out of position. Turn handwheel in operating direction (away from operator) until needle holding screws (A, Fig. 2) are just exposed from behind presser spring plunger (B) and accessible to screwdriver. Loosen screw and withdraw needle. When replacing needles observe the position of the flat which is at the left of the shank and be sure the needle is inserted the full depth to the combination eyelet and stop plate (C).

THREADING

Only parts involved in threading are shown in threading diagrams (Fig. 1 and 1A). Parts are placed in their relative positions for clarity.

Thread from thread stand (C) is threaded through the upper holes of tension thread guide (D) from front to back and then through the lower holes from back to front. It should be noted on Styles 39600 FB, FQ and FS that thread No. 5 (overedge needle - green color code) is threaded through the tension thread guide (D), first through the upper hole back to front, second through the middle hole front to back and third through the lower hole back to front. All threads then continue between the tension discs (K), through tension post slot (L) in tension post (H) and on through its proper hole in front thread guide (N).

It will simplify the threading of these machines to follow the recommended sequence as designated by the numbers assigned to each thread, starting with thread No. 1, then No. 2, etc. The various eyelets and guides on the machine for each thread have been color coded to further aid the threading process.

Thus the threading sequence for Styles 39600 FA, FP and FR (503 stitch) is as follows: Thread No. 1, 401 looper thread - blue color code; thread No. 2, 503 upper looper thread - yellow color code; thread No. 3, 401 needle thread - red color code; thread No. 4, overedge needle thread - green color code.

The threading sequence for Styles 39600 FB, FQ and FS (504 stitch) is as follows: Thread No. 1, 504 lower looper thread - black color code; thread No. 2, 401 looper thread - blue color code; thread No. 3, 504 upper looper thread - yellow color code; thread No. 4, 401 needle thread - red color code; thread No. 5, overedge needle thread - green color code.

Before beginning to thread, swing cloth plate open, turn handwheel in operating direction until the needles (P) are at their highest position, release pressure on presser foot by turning presser foot release bushing (A), and swing presser arm (B) out of position.

RAISE 401 LOOPER THREAD TAKE-UP EYELET (W) BY RELEASING EYELET LATCH (X) AND RAISING EYELET.

THREADING 401 LOOPER (Blue Color Code)

Double end of 401 looper thread (No. 1 on Styles 39600 FA, FP and FR; No. 2 on Styles 39600 FB, FQ and FS) and lead it through the rear eyes of looper thread take-up eyelet (W) from right to left and forward through its front eyelet. Return eyelet to its lower position by pressing it down. When eyelet is in correct position, latch (X) will snap into place. Thread down through the vertically positioned 401 looper thread eyelet (Y). Bring needle arm to bottom of its stroke. Insert doubled

E Tension Nut F Tension Spring Ferrule G Tension Spring H Tension Post J Spring Shield K Tension Discs L Tension Post Slot M Tension Disc Felt 3 4 2 1 TO RAISE EYELET "W" FOR THREADING PRESS "X" TO RELEASE C A D 1 2 3 4 X EYELET MUST BE IN LOCKED POSITION AE B N AD W R S AF P AA 65° 45° 35° 30° 4 3 Y Z Fig. 1

THREADING 401 LOOPER (Blue Color Code, Continued)

end of thread into right eye of 401 looper (Z) from back to front, push through approximately an inch or so of thread. Holding tweezers in left hand insert doubled end of thread into left eye, using about 3/16 inch projection of thread from point of tweezers. DO NOT THREAD LOOPER WITH NEEDLE LOOP AROUND LOOPER. REMOVE LOOP, OTHERWISE MACHINE WILL NOT SEW.

THREADING UPPER LOOPER (Yellow Color Code)

Turn handwheel until point of upper looper (AC) is all the way left. Double end of upper looper thread (No. 2 on Styles 39600 FA, FP and FR; No. 3 on Styles 39600 FB, FQ and FS) and lead the thread through the auxiliary looper thread eyelet (AA) from back to front and then through both eyes of the upper looper thread eyelet (R) from left to right across the inside of needle thread cam pull-off (S).

After pulling up the upper looper thread tube assembly (AB), lead thread down through tube assembly and pull thread out bottom of tube. Push tube down and insert the thread through the eye of the upper looper (AC) from front to back.

THREADING 401 NEEDLE THREAD (Red Color Code)

Turn handwheel in operating direction to lower needle driving arm to the bottom of its stroke. Double end of 401 needle thread (No. 3 on Styles 39600 FA, FP and FR; No. 4 on Styles 39600 FB, FQ and FS) and lead thread through both eyes of the 401 needle thread eyelet (AD) from left to right, passing over the outside of the needle thread cam pull-off (S). Then thread through eyelet (AE) from back to front. On Styles 39600 FA, FP and FR, now thread through the left eye of the needle driving arm eyelet (AF) and finally through the eye of the left needle (P).

On Styles 39600 FB, FQ and FS, after passing the thread through eyelet AE from back to front, then thread through the upper eye of the needle driving arm eyelet (AF), through the lower eye and then through the eye of the left needle (P). NOTE: To thread the needle, raise the needle by rotating the handwheel in the operating direction and thread the needle front to back.

THREADING OVEREDGE NEEDLE (Green Color Code)

Turn handwheel in operating direction until the needle is at its highest position.

Pass the overedge needle thread (No. 4 on Styles 39600 FA, FP and FR) through the right eye of the needle driving arm eyelet (AF) and finally through the eye of the right needle (P) from front to back.

On Styles 39600 FB, FQ and FS, pass the overedge needle thread (No. 5) through both eyes of the upper needle thread eyelet (AD) from right to left, passing over the outside of the needle thread cam pull-off (S), then thread through eyelet (AG) from right to left and then down through hole in top cover needle thread eyelet (AH). Thread right needle (P) from front to back.

THREADING 504 LOWER LOOPER (Black Color Code)

Double end of lower looper thread (No. 1 on Styles 39600 FB, FQ and FS) and lead it through both eyes of the lower looper thread eyelet (R) from right to left across the inside of needle thread cam pull-off (S). Lead thread back under hook of fabric guard bracket (T) and through eye of frame looper thread guide (U). Turn handwheel in operating direction until heel of lower looper (V) is all the way to the left, then thread through left eye, entering from the rear and then through the right eye entering from the front. Left eye of lower looper can be threaded easily if tweezers are held with the left hand.

E Tension Nut F Tension Spring Ferrule G Tension Spring H Tension Post J Spring Shield K Tension Discs L Tension Post Slot M Tension Disc Felt D TO RAISE EYELET "W" FOR THREADING PRESS "X" TO RELEASE C A TO RAISE EYELET "W" FOR THREADING PRESS "X" TO RELEASE EYELET MUST BE IN LOCKEL POSITION AE N AD X W AF AA R S P Y AC AB 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Fig. 1A

THREAD TENSION

The amount of tension on the needle and looper threads is regulated by the knurled tension nuts (E, Fig. 1). Tension on the threads should be only enough to secure proper stitch formation. Using a postal scale, the measurements are taken with the needles at the top of their stroke and pulled in the direction as indicated. As a start the tensions for the 515 stitch type may be as follows:

401 needle thread; 2 to 2 1/2 oz. straight out of lower eye of needle driving arm eyelet (AF) with needle driving arm in its most rearward position.

Overedge needle thread; 1 1/2 to 2 oz. straight out of front thread guide (N).

401 looper thread; 2 oz. straight out of looper thread eyelet (Y).

Upper looper thread; 2 1/2 oz. straight out of upper looper thread eyelet (R) when needle driving arm is in its most rearward position.

Further refinement in tension adjustment is discussed at the conclusion of the adjusting instructions.

G F E D H C B A

Fig. 2

PRESSER FOOT PRESSURE

Sufficient pressure to feed work uniformly should be maintained. Should it be necessary to increase or decrease amount of pressure on presser foot loosen lock nut (D, Fig. 2) and turn the adjusting screw (E). Adjusting screw has a right hand thread so tightening increases the pressure, loosening decreases pressure. When pressure adjusting screw (E) has been properly set, tighten lock nut (D). With presser foot resting on the throat plate, position locking nut (F) so that its under surface is approximately 1/32 inch to 1/16 inch from the top surface of adjusting screw (E). Set the cap (G) against the locking nut (F).

FEED ECCENTRICS

Feed eccentrics used in these machines have been selected to produce approximately 11

stitches per inch on Styles 39600 FA and FB and 10 stitches per inch on Styles 39600 FP, FQ, FR and FS. It will be noted that part numbers 39540 B-10 and 39540 B-11 for Styles 39600 FA and FB, and 39540 B-9 and 39540 B-10 for Styles 39600 FP, FQ, FR and FS are the main feed and differential feed eccentricities respectively. Minor numbers of the part symbol indicate approximately the number of stitches obtainable when using that eccentric. Unless otherwise specified, machine will be shipped with above eccentricities.

Generally speaking, differential (right hand) feed eccentric determines the number of stitches produced; the main (left hand) feed eccentric is selected in relation to the degree and direction of stretch of material being sewn, or the type of operation.

The following stitch number feed eccentrics are available under No. 39540 B; 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 40. Only two eccentrics are supplied with each machine. Additional eccentrics may be ordered separately. To order an eccentric, use No. 39540 B with a minor number suffixed to indicate number of stitches desired. Example: "39540 B-10".

It is suggested that the following sequence be followed: Before assembling the sewing parts, remove cloth plate, fabric guard, chip guard, upper knife assembly and lower knife holder assembly.

SETTING THE NEEDLES

Release the pressure on presser arm and swing arm out of position. Insert both needles (Type 161 GS for the 401 stitch and Type 154 GAS for the overedge stitch) into the left and right holes, respectively, of the needle driving arm (A, Fig. 3), so that the butt ends contact the needle driving arm thread eyelet (C, Fig. 2). Secure needles in this position with clamp screws (A, Fig. 2).

With the throat plate assembled in position, the needles should center in the throat plate needle holes. To align the needles, loosen clamp screw (B, Fig. 3) and reposition the needle driving arm to the right or left as required. The height of the needle driving arm is correct when the point of the left needle is 5/8 inch above the throat plate (Fig. 3) when at the top of its stroke. Tighten clamp screw (B) after correct height has been obtained and needles have been centered in the throat plate needle holes. Remove throat plate

A B 5" 8

Fig. 3

SETTING 503 STITCH LOWER SPREADER

A 1/8 C B

Fig. 4

Insert the lower spreader (A, Fig. 4) into bar (B). With lower spreader at left end of its stroke, set spreader point 1/8 inch from centerline of right needle (Fig. 4) using gauge No. 21225-1/8. Do not have lower spreader deflecting needle. Do not lock nut (C) because the spreader point will have to be set to the needle scarf after the rear needle guard has been assembled and positioned. (See paragraph under "Final Setting of Lower Spreader").

SETTING 503 STITCH REAR NEEDLE GUARD

Set the rear needle guard (A, Fig. 5) as high as possible without interfering with either the lower spreader or movement of the lower knife holder, but still inposition to deflect the needle forward .002 to .004 inch. Screw (B) is used to set rear needle guard. Make sure there is no interference between rear needle guard and lower spreader.

FINAL SETTING OF 503 STITCH LOWER SPREADER

Now complete the lower spreader adjustment. As lower spreader moves to the right its point should be set into the needle scarf (C, Fig. 5) until the needle springs forward from the rear needle guard surface. another .002 to .004 inch. This setting

FINAL SETTING OF 503 STITCH LOWER SPREADER (Continued)

Technical diagram of a mechanical device with labeled parts A, B, C, D, and E

Fig. 5

is obtained by rocking the spreader forward or backward around its shank. Recheck the 1/8 inch spreader gauge setting and tighten nut (C, Fig. 4).

SETTING 503 STITCH FRONT NEEDLE GUARD

Assemble front needle guard (D, Fig. 5). When lower spreader is springing needle off rear guard, set the front needle guard as close as possible to the needle without touching. Screw (E) is used to adjust and set the front needle guard. After making this setting, assure there is no interference between needle guards and differential feed dog.

SETTING 503 STITCH UPPER LOOPER

Insert upper looper (A, Fig. 6) in its holder. Screw (B) holds the looper in its holder and permits looper to be pushed in or out, or turned around its shank. Screw (C) on the collar, holds looper holder in the shaft and allows the holder to be rotated or adjusted laterally.

C B 5 6 VERTICAL A

Fig. 6

Preliminary Setting: When looper is at the right end of its stroke, looper holder should be set to position the looper shank about vertical (Fig. 6). The top end of the looper shank should extend approximately 5/64 inch above holder (Fig. 6).

Set looper to pass just behind hump of lower spreader, with approximately .002 inch clearance between looper and lower spreader (Fig. 7).

Next, turn handwheel until loop-er is at left end of its travel: check the setting so point of looper extends about 5/32 inch to the left of needle (Fig. 8).

.002 CLEARANCE

Fig. 7

Now check setting between looper and needle. If needle rubs the back of looper, pull looper out of its holder slightly and rotate the looper holder forward a short distance. These same adjustments, in opposite movement, will reduce the clearance between looper and needle. Reset to lower spreader (Fig. 7).

SETTING 401 STITCH REAR NEEDLE GUARD

Insert rear needle guard into the hole in the throat plate support bracket. Set height of guard (F, Fig. 5) approximately 3/16 inch below the throat plate seat. Bring the 401 needle down until its point is 1/64 inch below the widest portion of the guarding surface. Then bring the guard forward to deflect the needle forward

SETTING 401 STITCH REAR NEEDLE GUARD (Continued)

from .003 to .005 inch. Then lock the guard in place with set screw (G).

SETTING 401 STITCH LOOPER

Insert 401 stitch looper into looper holder and press down until the butt end of the shank strikes the looper shaft. Looper will be at correct height. Tighten the looper clamp screw while working the looper blade to and fro to secure accurate seating of clamp screw against flat on shank.

5" 32

Fig. 8

1" 16

Fig. 9

With looper at the right end of its stroke, set looper 1/16 inch from centerline of left needle (Fig. 9) using looper gauge No. 21225-1/16. Loosen looper holder binder screw with a 7/64 inch hexagonal allen key to position the looper.

Viewing machine from the left end, set the looper point to lie in the scarf of the needle within .002 inch clearance (Fig. 10). Retighten looper holder binder screw.

While hand turning machine through cycle observe the action of the needle with relation to the looper. As needle rises from the bottom of its stroke the looper will approach the needle from right side and pass behind at top of needle scarf without striking. Further rising of the needle will result in the looper point entering the scarf. Furthermore, since the needle point is coming off the rear guard, the needle will resume its normal position by moving to the rear, resulting in a close relation of the needle and looper, or actual contact, until scarf passes looper. On the down stroke, the needle should pass behind the looper without the point glancing off the guarding surface of the looper.

.002 CLEARANCE

Fig. 10

Set front needle guard as close as possible to the needle when looper point is behind the needle and flush with the left side of needle. Also, front needle guard should be set so there is from 1/64 to 1/32 clear- ance between it and bottom of looper blade. Turn handwheel in operating direction, making complete revolutions to check whether needle is disturbed or pinched.

For convenience the looper may now be threaded as shown in (Fig. 1 or 1A) and as described under paragraph "To Thread 401 Looper". Replace differential feed dog, throat plate, lower knife holder and reset upper knife. Check cutting action with thread.

SETTING THE FEED DOGS

Assemble main and differential feed dogs (A, B, Fig. 11).

Feed dogs should be level with the throat plate surface by rotating feed tilting adjusting pin (C). This pin raises or lowers the back end of feed bar. Feed dogs should be level at the time teeth first appear above the throat plate. Screw (D) locks the feed tilting adjusting pin in place. Now set feed dogs at highest point of travel. Main and differential feed dog teeth should be set 3/64 inch above the throat plate.

Technical diagram of a mechanical assembly with labeled parts A through H

Fig. 11

SETTING THE LOWER KNIFE

Replace the lower knife holder assembly. In replacing the lower knife holder assembly, tighten screw (E, Fig. 11) so that when the face of the flange on sleeve (F) seats against throat plate mounting bracket (G), a free lateral motion of the lower knife and holder assembly is obtained when the knife is manually pressed at its upper corner. Lower knife (H) should be set with cutting edge flush with throat plate surface. Adjustments are made with hexagonal head screw (J) which holds the lower knife. Lower knife is spring pressed against the upper-knife, so no lateral adjustment is necessary when the width of trim is changed.

Lower knife may be secured in any position by tightening screw (K) against the knife holder shaft. Set the desired width of trim by measuring from the right edge of lower knife to needle. Lock lower knife holder shaft with screw (K).

SETTING THE UPPER KNIFE (Styles 39600 FA, FB, FP and FQ)

Replace upper knife assembly. Clamp upper knife (A, Fig. 12) in position, setting allen screw (B) to hold clamp (C) against the upper knife. At bottom of its stroke, front cutting edge of upper knife should extend not less than 1/64 inch below cutting edge of the lower knife.

After upper knife has been set for proper width of trim, screw (D) should be tightened to lock upper knife holding block (E) in place.

Technical diagram of an electrical device with labeled components A, B, C, D, and E

Fig. 12

SETTING THE UPPER KNIFE (Styles 39600 FR and FS)

Replace the upper knife assembly. Clamp upper knife (A, Fig. 13) in position, setting nut (B) to hold clamp (C) in its most clockwise position against upper knife. At the bottom of its stroke, front cutting edge of upper knife should extend not less than 1/64 inch below cutting edge of lower knife. The chain guard (D) should be set down against the upper knife and back from the cutting edge.

SETTING THE UPPER KNIFE (Continued) (Styles 39600 FR and FS)

After upper knife has been set for proper width of trim, screw (E) should be tightened to lock upper knife holding block (F) in place. This will simplify resetting when upper knife is replaced.

SETTING THE STITCH LENGTH

Length of stitch is determined by the combination of feed eccentricis used. Outer (left) eccentric (A, Fig. 14) actuates main (rear) feed dog; while the inner (right) eccentric (B) actuates the differential (front) feed dog.

In assembling feed eccentrics, be sure hubs are facing each other. Be careful not to damage shaft or key. Tighten nut (C) securely.

To change feed eccentric, remove nut (C) and washer (D) from end of shaft (E). Turn handwheel in operating direction until key slot in eccentric is toward front. Using hooked eccentric extractor (F), supplied with machine, reach behind eccentric as shown and withdraw eccentric. It may be necessary to move handwheel back and forth slightly during extraction.

Technical diagram of a mechanical assembly with labeled parts A through F

Fig. 13

If eccentrics are unusually tight fitting, in addition to removing nut (C) and washer (D, Fig. 15) from shaft (E), it may be helpful to remove nut (G) and feed driving connection (H). Then continue as originally suggested.

SETTING THE PRESSER FOOT

A B C D E F

Fig. 14

Assemble the presser foot to presser arm. With needle in high position, swing presser arm into sewing position and set the presser foot to align needle holes (front and back) and flat on throat plate. The front edge of needle hole in presser foot must be aligned with front edge of needle hole in throat plate. It is also important that the bottom of the presser foot be flat on the throat plate. If necessary, presser foot can be realigned with throat plate slots by shifting the foot lifter lever shaft (H, Fig. 16). To move the shaft, loosen collar screws (B, Fig. 16) and clamp screw (G) and then shift the foot lifter lever shaft to the left or right as required. Retighten collar screws and clamp screw.

The foot lifter lever arm (A, Fig. 16) and the collar (B) secure the shaft. Be sure the presser arm does not bind and rise when presser foot release bushing is unlocked.

Adjust lifter lever stop screw (C) so that presser foot can be raised no higher than upper looper will permit: then lock the nut (D). There should be from 1/16 to 1/8 inch free motion of foot lifter lever before the presser foot begins to rise. This

SETTING THE PRESSER FOOT (Continued)

adjustment should be made with screw (E) and locked with nut (F). Re-assemble the chip guard. fabric guard and cloth plate. To assemble chip guard, turn handwheel until upper knife assembly reaches its highest position.

503 STITCH NEEDLE THREAD CONTROL

Technical diagram of a mechanical assembly with labeled components A through H, showing internal components and directional arrows.

Fig. 15

While sewing on material, check needle thread control as follows: Usually all needle thread is drawn on needle down stroke. At the top of needle stroke, thread should be just tight enough to feed chain off stitch tongue. The stitch tends to pull down slightly if excessive thread is pulled on the up stroke.

503 STITCH UPPER LOOPER THREAD CONTROL

With material under presser foot, set upper looper thread eyelet (R, Fig. 1 or 1A) back and down far enough so the thread is taut when the looper reaches its extreme left position. Looper

thread eyelet should be about horizontal.

THREAD TENSIONS

Before proceeding, balance both tensions to give a normal appearing stitch. Moderate change in these tensions will not markedly affect the purl.

SPECIAL ADJUSTMENTS

· SKIPPING: For occasional skipping, check and/or adjust as outlined below:

1. Recheck lower spreader - needle setting. See "Setting the Needles".

2. Recheck spreader - upper looper crossing. See "Setting 503 Stitch Upper Looper".

3. Check clearance between needle and upper looper. See that upper looper moves far enough left past the needle.

Settings 1 and 2 should be made quite carefully. If it can be determined by appearance that skip is definitely not a needle loop skip, reposition looper thread eyelet (R, Fig. 1 or 1A) by lowering it slightly and bringing eyelet holes in close to bend in looper thread pull-off (S). After this change, increase the looper thread tension as much as possible without distorting the stitch.

E F A G B C H S D

Fig. 16

STARTING TO OPERATE

Be sure the machine is threaded according to threading diagram (Fig. 1 or 1A).

With thread tensions light, set looper thread eyelet about horizontal and in the center of its front to back location.

STARTING TO OPERATE (Continued)

Operate machine slowly, with presser foot in place. Make sure that chain forms and moves off the tongue freely.

SETTING 401 NEEDLE THREAD EYELETS

Bring needle thread through its respective eyelets as shown in Fig. 1 or 1A and as described in paragraph "Threading 401 Needle Thread". Do Not thread the needle. Lower needle to the bottom of its stroke. Position needle thread pull-off eyelet (AD, Fig. 1 or 1A) so that the thread is spaced 1/16 inch from the needle thread pull-off cam (Fig. 17). With the needle at the top of its stroke, the needle thread pull-off eyelet should be positioned so that there is 1/64 inch clearance between the thread and the needle thread pull-off cam (Fig. 17). The frame thread eyelet should be centered in its slot and set vertically.

NOTE: This setting will require changing, depending upon the type of 401 stitch that is desired.

1/16 1/64

Fig. 17

SETTING 401 LOOPER THREAD EYELETS

Set 401 looper thread take-up cam eyelet so rear eyelet hole is directly under looper thread cast-off corner of cam (A, Fig. 18) when cam is at its most rearward position. Front and rear eyelet holes to be set horizontally. Looper thread eyelet (A, Fig. 19) to be set vertically and approximately centered in its slot.

Pull several feet of thread through the looper to provide slack while checking the tension. Turn handwheel in operating direction until the needle is totally raised. Pulling the thread straight towards the operator, through the looper thread eyelet (A, Fig. 19), adjust tension with the knurled nut (H, Fig. 2) to approximately 2 ounces.

TIMING 401 STITCH LOOPER THREAD CAST-OFF

When the 401 looper thread cam is correctly positioned on the needle arm shaft, the cast-off corner (A, Fig. 18) will be 3/4 inch vertically below the top surface of the bed, when the needle arm is at its highest position (Fig. 18). This adjustment is

B 3 O VERTICAL

Fig. 18

made at the factory, but if checked and moved, it must be observed that the cam functions as a thrust collar for the needle arm shaft and correct thrust must be maintained. If this setting is correct, the casting-off may be timed. To change the time of casting-off, move the cast-off blade (B) up or down, rotating it about its holding screw. Set cast-off blade to cast-off looper thread when the needle point is between the bottom and top of the looper.

SEWING OFF 401 STITCH

Drawing of the needle thread is controlled by the needle thread eyelet. Moving the eyelet towards the operator will tend to have the thread drawn from the cone on the upstroke of the needle arm travel and will tighten the needle thread in the seam that is being sewn.

Moving the eyelet towards the rear, tends to draw the thread on the downstroke and will loosen the needle thread in the seam.

Observe the action of the looper thread take-up at the bottom of the needle stroke. The looper thread is lying across the cam lobes, slack from the previous casting-off. As the needle arm rises to the top, the looper thread will begin to tighten across the cam until cast-off will again occur and the looper thread will lie in the crotch of the cast-off blade (B, Fig. 18).

Only enough tension should be carried on the looper thread to resist friction of looper and eyelet system. Thread should be pulled off only during the return travel of the looper from left to right and cease at casting-off.

Close-up of a mechanical component with a circular valve and handle (no visible text or symbols)

Fig. 19

ASSEMBLING AND ADJUSTING SEWING PARTS FOR 504 STITCH

The setting and adjustment of the needles, upper looper, front and rear needle guards as described earlier for the 503 stitch are applicable when making similar adjustments for the 504 stitch. Also, the adjusting and setting of the lower looper used in the 504 stitch formation is similar to the setting of the lower spreader used in the 503 stitch formation.

TO REMOVE CRANKSHAFT

Technical diagram of a mechanical assembly with labeled components and directional arrows indicating motion or flow.

Fig. 20

Crankshaft can be withdrawn more easily if these steps are followed:

1. Drain oil by removing plug screw located at back of machine near bottom edge of base.

2. Remove top and bottom covers of machine.

3. Remove the feed eccentric nut and washer (F, Fig. 20) and, with the aid of the eccentric extractor, slip off the eccentrics (G).

4. Remove key (H).

5. Remove two counterweights (J). Identify these counterweights so that they will be reassembled in the proper place.

6. Remove screw (K) which holds crankshaft split bearing. This screw is reached through bottom of bed casting.

7. Remove caps of bearings on crankshaft at points A, B, D and E. When re-assembling bearing caps make sure they are in their original position. Trademarks are stamped on both halves of the caps and both trademarks should be on the same side of the bearings. Also, screws should be reassembled in the same holes from which they were removed.

TO REMOVE CRANKSHAFT (Continued)

A B

D E C F G

Fig. 21

1. Loosen clamp screw (A, Fig. 21) which holds eyelet bracket and swing bracket up. Loosen screw (B); swing eyelet up. Loosen clamp nut (C) which holds the upper knife driving arm (D). Access to clamp nut is through top cover. Draw driving arm to the left until upper knife driving lever (E) and connecting rod (F) drop, allowing removal of bearing cap (G). This is at bearing point (C, Fig. 20) on crankshaft. Observe same precautions when reassembling cap as described in paragraph 7.
2. Remove screw (L, Fig. 20) which holds inner right crankshaft bearing. This screw is reached through bottom of bed casting.
3. Loosen two screws (M) in fan collar; remove both halves of cooling fan.
4. Remove screw (N); take off pulley cap (P).
5. Loosen two screws (R); remove pulley (S).
6. Remove three screws (T); take off bearing retaining plate (U); also, spacer collars (V) and (W) may be removed at this time.
7. Crankshaft may now be removed.
8. If necessary to replace ball bearing (Y), it can be pressed off shaft on an arbor press. In replacing the bearing it must be pressed on carefully until it seats against ground thrust washer (X).
9. Carefully observing reverse of the foregoing operations should simplify reassembly of crankshaft. Checking exploded view drawings for location of various parts and constant testing for binds during reassembly will also prove helpful.
10. Before reassembling, thoroughly clean and dry the top and bottom covers and gaskets. Before reassembling bottom cover make sure that spring pressed oil wick which lubricates left crankshaft bearing is inserted in hole in casting and that it contacts shaft. The wick stands vertically on its spring against bottom cover. Coat the oil drain plug with a sealing compound before reassembling to prevent oil leakage. No. 1 Crane Lead Seal is recommended.

ORDERING REPAIR PARTS

ILLUSTRA TIONS

This catalog has been arranged to simplify ordering repair parts. Exploded views of various sections of the mechanism are shown so that the parts may be seen in their actual position in the machine. On the page opposite the illustration will be found a listing of the parts with their part numbers, description 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 that part in the illustration. Reference numbers should never be used in ordering parts. Always use the part number listed in the second column.

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:

29	29477 KN	Crankshaft and Needle Driving Crank Assembly, forStyles 39600 FA and FB, all gauges----1
	29477 KP	Crankshaft and Needle Driving Crank Assembly, forStyles 39600 FP, FQ, FR and FS, all gauges----1
30	29477 MC	Needle Driving Arm Crank and Connecting RodAssembly----1
31	22587 M	Screw, for needle driving arm connectingrod----2
32	22596 H	Screw, for needle driving arm crank----1
33	22768 C	Screw, for connecting rod pin----1
34	51-228 Blk.	Vent Plug----1
35	39541 A	Feed Drive Eccentric Key----1
36	30-106 Blk.	Wood Plug, for crankshaft----1
37	CO67 E	Cork Plug----1
38	40-46	Washer----1
39	258	Nut----1

It will be noted in the above example that the connecting rod and needle bearing are not listed. The reason is that replacement of these parts individually is not recommended, so the complete sub-assembly should be ordered.

Where parts for Styles 39600 FA, FB, FP, FQ, FR and FS are not the same, the difference will be shown in the illustrations or mentioned in the descriptions. When a part is used in all the machines covered by this catalog no machine style will be mentioned.

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.

IDENTIFYING PARTS

When the construction permits, each part is stamped with its part number. Parts too small for a complete catalog stamping are identified by letter symbols which distinguish one part from another that is similar in appearance.

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.

USE GENUINE NEEDLES AND REPAIR PARTS

Success in the operation of these machines can be secured only with genuine UNION SPECIAL Needles and Repair Parts as furnished by the Union Special Corporation, its subsidiaries and authorized distributors. They are designed according to the most scientific principles, and are made with utmost precision. Maximum efficiency and durability are assured.

Genuine needles are packaged with labels marked Union Special®. Genuine repair parts are stamped with the Union Special trademark, U S Emblem. Each trademark is your guarantee of the highest quality in materials and workmanship.

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 otherwise directed. A charge is made to cover postage and insurance.

TORQUE REQUIREMENTS

Torque (measured in inch-pounds) is a rotating force (in pounds) applied through a distance by a lever (in inches or feet). This is accomplished by a wrench, screw driver, 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, unless otherwise noted. All other nuts, bolts, screws, etc., should be tightened by hand as tightly as possible, unless otherwise noted.

The screws requiring a specific torque, will be indicated on the picture plates.

Technical diagram of a mechanical assembly with numbered components and exploded view, likely for engineering or manufacturing documentation.

MAIN FRAME, MISCELLANEOUS COVERS AND PLATES

Ref. No.	Part No.	Description	Amt. Req.
1	22657 D-12	Screw, for cloth plate----	1
2	22569	Screw, for cloth plate stud----	1
3	39501 K	Cloth Plate Stud----	1
4	39534 R	Feed Bar Oil Shield----	1
5	90	Screw, for feed bar oil shield----	1
6	667 H-16	Dowel Pin, for eyelet bracket----	1
7	667 D-8	Dowel Pin, for top cover----	2
8	39594 R	Oil Collector Plate----	1
9	22565	Screw, for upper looper thread tube assembly and upper looper rocker shaft----	2
9A	22565 S	Spot Screw, for upper looper rocker shaft----	1
9B	22569 K	Screw, for oil sight gauge----	1
10	22569 D	Screw, for oil collector plate----	1
11	22571 E	Magnetic Oil Drain Plug----	1
12	660-243	Oil Gauge Seal Ring----	1
13	39593 H	Oil Sight Gauge----	1
14	22894 AE	Screw, for lower looper drive lever shaft----	2
	22894 AE	Screw, for lower looper bar driving lever shaft----	2
15	22569 D	Screw, for chip guard----	2
16	29477 GW	Upper Looper Thread Tube Assembly, for Styles 39600 FA, FB----	1
16A	29477 HJ	Upper Looper Thread Tube Assembly, for Styles 39600 FP, FQ, FR, FS----	1
17	39568 G	Thread Tube, for No. 29477 GW----	1
17A	39568 P	Thread Tube, for No. 29477 HJ----	1
18	39568 J	Thread Tube Tension Spring----	1
19	22743	Screw, for thread tube tension spring----	1
20	22824	Screw, for oil filter screen----	2
21	39594 G	Oil Filter Screen----	1
22	39594 H	Oil Strainer----	1
23	39668 R	Looper Thread Eyelet----	1
24	53678 N	Washer, for looper thread eyelet screw----	1
25	22562 A	Screw, for looper thread eyelet----	1
26	86 X	Screw, for feed mechanism cover----	1
27	41071 G	Nut, for feed mechanism cover screw----	1
28	39582 DA	Feed Mechanism Cover----	1
29	39501 DF	Cloth Plate, for semi or fully submerged installation----	1
30	39578 F	Cloth Plate Fabric Guard----	1
31	138	Screw, for cloth plate fabric guard----	2
32	39532 A	Cloth Plate Latch Spring----	1
33	90	Screw, for cloth plate latch spring----	2
34	39678 AB	Chip Guard Assembly----	1
35	660-210	Retaining Ring----	1
36	39878 C	Hinge Pin----	1
37	39678 U	Chip Guard Base----	1
38	39158 U	Spring----	1
39	43443 Q	Nut, for hinge pin----	2
40	39678 AC	Chip Guard Cover----	1
41	39582 F	Bottom Cover and Base Plate Extension----	1
42	22653 D-4	Screw, for bottom cover and base plate extension----	2
43	39593 D	Oil Gauge Indicator----	1
44	39593 C	Oil Gauge Float----	1
45	39582 Y	Bottom Cover Gasket----	1
46	22569	Screw, for bottom cover----	14
47	39582 XD	Bottom Cover----	1
48	39595	Mounting Isolator, rubber----	4
49	22586 R	Screw, for bottom cover----	1

Technical diagram of a mechanical assembly with numbered parts and torque specifications for 19-21 inches.

CRANKSHAFT MECHANISM AND BUSHINGS

Ref. No.	Part No.	Description	Amt. Req.
1	39555 E	Foot Lifter Shaft Bushing, left	1
2	39573 K	Upper Knife Driving Arm Bushing, left	1
3	39555 N	Foot Lifter Shaft Bushing, right	1
4	39573 AA	Upper Knife Driving Arm Bushing, right	1
5	39644 C	401 Looper Drive Shaft Bushing, right	1
6	39644 S	401 Looper Drive Shaft Bushing, left	1
7	39590 T	Crankshaft Bushing, inner left	1
8	39544 L	Lower Looper Bar Bushing	1
9	39552 U	Needle Driving Arm Crank Bushing, left	1
10	39590	Crankshaft Bushing, left	1
11	39552 P	Needle Driving Arm Crank Bushing, right	1
12	666-94	Oil Wick and Spring	1
13	39690 A	Stud, for crankshaft bearing	1
14	39690	Crankshaft Bearing, inner right	1
15	660-443	"O" Ring, for crankshaft bearing, inner right	1
16	22894 D	Screw, for fan collar	2
17	39591 H	Chamber Cooling Fan Collar	1
18	39591 L	Chamber Cooling Fan	1
19	39590 J	Thrust Washer	1
20	39590 G	Crankshaft Ball Bearing Housing	1
21	660-268	Crankshaft Ball Bearing	1
22	39590 R	Ball Bearing Stop Collar	1
23	39590 S	Spacer Collar	1
24	39590 H	Crankshaft Ball Bearing Retaining Plate	1
25	39521 G	Pulley	1
26	95	Screw, for pulley	2
27	39521 D	Pulley Cap	1
28	22769 B	Screw, for pulley cap	1
29	22569 B	Screw, for ball bearing housing	3
30	29477 KN	Crankshaft and Needle Driving Crank Assembly, for Styles 39600 FA and FB, all gauges	1
	29477 KP	Crankshaft and Needle Driving Crank Assembly, for Styles 39600 FP, FQ, FR and FS, all gauges	1
31	29477 MC	Needle Driving Arm Crank and Connecting Rod Assembly	1
32	22587 M	Screw, for needle driving arm connecting rod	2
33	22569 H	Screw, for needle driving arm crank	1
34	22768 C	Screw, for needle driving arm connecting rod pin	1
35	51-228 Blk.	Vent Plug	1
36	39541 A	Feed Drive Eccentric Key	1
37	30-106 Blk.	Wood Plug	1
38	CO67 E	Cork Plug	1
39	40-46	Washer	1
40	258	Nut	1
41	39690 B	Crankshaft Split Bearing	1
42	97 A	Screw, for split bearing	2
43	39590 N	Stud, for split bearing	1
44	39691	Crankshaft Counterweight, right	1
45	22747 B	Screw, for counterweight	4
46	39591 K	Crankshaft Counterweight, left	1
47	87 U	Screw, for oil splasher	1
48	39594 N	Oil Splasher	1

Exploded view diagram of a mechanical assembly with numbered parts and exploded views

NEEDLE DRIVE, FEED MECHANISM AND FEED DOGS

Ref.No.	PartNo.	Description	Amt.Req.
1	22565 F	Screw, for feed adjusting pin	1
2	39535 C	Feed Adjusting Pin	1
3	39635	Main Feed Bar Guide, left	1
3A	39680	Throat Plate Support Stop	1
3B	93 A	Screw, for throat plate support stop	1
4	53634 C	Washer, for feed bar guide screw	2
5	22569 B	Screw, for main feed bar guide, left	2
6	39534	Main Feed Bar	1
7	39535 J	Feed Bar Guide Block	1
8	39534 GA	Differential Feed Bar	1
9	39535 D	Differential Feed Bar Guide, right	1
10	53634 C	Washer, for feed bar guide screw	2
11	22569 B	Screw, for differential feed bar guide, right	2
12	39536 B	Feed Bar Driving Stud	2
13	39538	Feed Lift Block	1
14	39534 H	Differential Feed Bar Thrust Washer	1
15	22569 G	Screw, for thrust washer	3
16	39626 D	Differential Feed Dog, 16 teeth per inch, marked"BR"; for No. 5 1/8 gauge, all Styles	1
-	39626 L	Differential Feed Dog, 16 teeth per inch, marked"EW"; for No. 3 1/8 gauge, Style 39600 FA	1
	*39626 C	Differential Feed Dog, 14 teeth per inch, marked"BP"; for No. 5 1/8 gauge, all Styles	1
	*39626 E	Differential Feed Dog, 22 teeth per inch, marked"BS"; for No. 5 1/8 gauge, all Styles	1
16A	39626 F	Differential Feed Dog, 14 teeth per inch, marked"BT"; for No. 12 3/16 gauge, Styles 39600 FP,FQ, FR and FS	1
	39626 G	Differential Feed Dog, 16 teeth per inch, marked"BU"; for No. 12 3/16 gauge, Styles 39600 FAand FB	1
	*39626 H	Differential Feed Dog, 22 teeth per inch, marked"BV"; for No. 12 3/16 gauge, all Styles	1
17	93	Screw, for differential feed dog	1
18	39605 F-5 1/8	Main Feed Dog, 16 teeth per inch, marked "DG";for No. 5 1/8 gauge, all Styles (throat plate No.39624 F-5 1/8)	1
	*39605 H-5 1/8	Main Feed Dog, 22 teeth per inch, marked"DZ-5 1/8"; for No. 5 1/8 gauge, all Styles(throat plate No. 39624 F-5 1/8)	1
	*39605 G-5 1/8	Main Feed Dog, 14 teeth per inch, marked"DY-5 1/8"; for No. 5 1/8 gauge, all Styles(throat plate No. 39624 F-5 1/8)	1
18A	39605 G-12 3/16	Main Feed Dog, 16 teeth per inch, marked"DY-12 3/16"; for No. 12 3/16 gauge, Styles39600 FA and FB (throat plate No. 39624 F-12 3/16)	1
	39605 F-12 3/16	Main Feed Dog, 14 teeth per inch, marked "DH";for No. 12 3/16 gauge, Styles 39600 FP, FQ,FR and FS (throat plate No. 39624 F-12 3/16)	1
-	39605 F-3 1/8	Main Feed Dog, 16 teeth per inch, marked "EY";for No. 3 1/8 gauge, Style 39600 FA (throat plateNo. 39624 F-3 1/8)	1
	*39605 H-12 3/16	Main Feed Dog, 22 teeth per inch, marked"DZ-12 3/16"; for No. 12 3/16 gauge, all Styles(throat plate No. 39624 F-12 3/16)	1
19 to 48		See following page

* Available as extra send and charge item.

Exploded view diagram of a mechanical assembly with numbered parts and Chinese labels

NEEDLE DRIVE, FEED MECHANISM AND FEED DOGS

Ref.No.	PartNo.	Description	Amt.Req.
1 to 18A		See preceding page
19	93 A	Screw, for main feed dog	1
20	39540 B-11	Differential Feed Driving Eccentric, for Styles39600 FA and FB, all gauges	1
	39540 B-10	Differential Feed Driving Eccentric, for Styles39600 FP, FQ, FR and FS, all gauges	1
21	39540 B-10	Main Feed Driving Eccentric, for Styles 39600 FAand FB, all gauges	1
	39540 B-9	Main Feed Driving Eccentric, for Styles 39600 FP,FQ, FR and FS, all gauges	1
22	39536 AF	Main Feed Bar Driving Connection	1
23	40-46	Washer, for feed driving eccentric	1
24	258	Nut, for feed driving eccentric	1
25	39536 E	Nut, for feed bar driving stud	2
26	39536 C	Feed Bar Driving Connection Bushing	2
27	39536 AE	Differential Feed Bar Driving Connection	1
28	22569 B	Screw, for fabric guard mounting bracket	2
29	8372 A	Washer, for fabric guard mounting bracket	2
30	39578 P	Fabric Guard Mounting Bracket	1
31	87	Screw, for fabric guard	2
32	39578 M	Fabric Guard	1
33	39652-5	Needle Driving Arm, marked "E-5"; for No. 5 1/8gauge, all Styles	1
-	39652-3	Needle Driving Arm, marked "E-3"; for No. 3 1/8gauge, Style 39600 FA	1
-	39652-12	Needle Driving Arm, marked "E-12"; for No.12 3/16 gauge, all Styles	1
34	28 B	Screw, for needles	2
35	22519 H	Screw, for needle driving arm	1
36	39663 L	Needle Thread Cam Pull-off	1
37	660-207	"O" Ring, for take-up cam	1
38	39552 C	Needle Driving Arm Crank Thrust Washer	1
38A	39543 Y	Thrust Collar	1
38B	22782 A	Screw	1
39	39552 R	Needle Lever Drive Shaft	1
40	39594 N	Oil Splasher	1
41	87 U	Screw, for oil splasher	1
42	39668 P	Looper Thread Take-up Cam	1
43	531	Screw, for looper thread take-up cam	1
44	22768	Screw, for needle thread cam pull-off	1
45	22784 E	Screw, for needle driving arm thread eyelet	1
46	39652 B	Needle Driving Arm Thread Eyelet, for No. 5 1/8gauge, Styles 39600 FB, FQ, FS	1
-	39652 D	Needle Driving Arm Thread Eyelet, for No. 3 1/8gauge, Style 39600 FA and No. 5 1/8 gauge,Styles 39600 FA, FP, FR	1
46A	39652 C	Needle Driving Arm Thread Eyelet, for No. 12 3/16gauge, Styles 39600 FB, FQ, FS	1
-	39652 E	Needle Driving Arm Thread Eyelet, for No. 12 3/16gauge, Styles 39600 FA, FP, FR	1
47	154 GAS	Needle, for 503 or 504 stitch	1
48	161 GS	Needle, for 401 stitch	1

* Available as extra send and charge item.
† Use screw No 77 K in the lower hole for. No. 39663 L and 22768 in upper hole.

TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 14 in. lbs. TORQUE TO 25-26 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 19-21 in. lbs. TORQUE TO 36A

UPPER LOOPER, SPREADER AND LOWER LOOPER DRIVING PARTS

Ref. No.	Part No.	Description	Amt. Req.
1	39508 A	Upper Looper, marked "CC", for all Styles, all gauges	1
2	39543	Upper Looper Holder, marked "J"	1
3	22564 G	Screw, for upper looper	1
4	39543 A	Upper Looper Holder Collar	1
5	22 KH	Screw, for upper looper holder collar	1
6	22565 H	Screw, for bushing and cam guide	1
7	1025 L	Lock Screw, for bushing and cam guide screw	1
8	39543 T	Cam Follower	1
* 9	39543 S	Upper Looper Drive Shaft Bushing and Cam Guide	1
*10	39543 K	Upper Looper Drive Shaft	1
11	22503 F	Screw, for cam follower locking clamp	1
12	39543 E	Cam Follower Locking Clamp	1
13	97	Screw, for guide fork	2
14	39544 J	Guide Fork	1
15	482 C	Upper Looper Drive Lever Shaft Collar	1
16	22894 C	Screw, for collar	2
17	22565	Screw, for upper looper drive lever shaft	1
18	39543 X	Upper Looper Drive Lever Shaft	1
19	22565 S	Screw, for upper looper drive lever shaft	1
20	39543 W	Upper Looper Drive Lever	1
21	39543 M	Clamp Collar	1
22	22562 A	Screw, for clamp collar	1
23	39543 P	Thrust Washer, for upper looper drive shaft	2
24	39543 U	Upper Looper Drive Lever Connecting Rod	1
25	22729 D	Screw, for connecting rod assembly	4
26	666-255	Felt Plug, for Nos. 39543 U and 39644 F	2
27	39594 N	Oil Splasher	1
28	87 U	Screw, for oil splasher	1
29	22894 AE	Screw, for lower looper or spreader bar driving lever shaft	2
30	482 C	Lower Looper or Spreader Shaft Collar	1
31	22894 C	Screw, for collar	2
32	22894 J	Screw, for knife drive oil drip plate	1
33	12982	Nut, for knife drive oil drip plate screw	1
34	39694	Knife Drive Connecting Rod Oil Drip Plate	1
35	660-206	"O" Ring, for lower looper or spreader bar driving lever shaft	1
36	39508 B	Lower Looper, for Styles 39600 FB, FQ, FS; all gauges	1
36A	39560 B	Lower Spreader, for Styles 39600 FA, FP, FR; all gauges	1
37	39151	Nut, for lower looper or spreader bar	1
38	39544	Lower Looper or Spreader Bar	1
39	39544 U	Lower Looper or Spreader Bar Driving Lever	1
40	39644 F	Lower Looper or Spreader Drive Lever Connecting Rod	1
41	22729 E	Screw, for connecting rod	2
42	22729 D	Screw, for connecting rod	2
43	39644 R-2	Shim, for ball joint guide fork, .002 inch thick --- as required
	39644 R-5	Shim, for ball joint guide fork, .005 inch thick --- as required
44	39644 X	Ball Joint Guide Fork	1
45	538	Screw, for ball joint guide fork	2
46	77	Screw, for connecting link pin	1
47	39544 B	Lower Looper or Spreader Bar Connecting Link	1
48	39544 D	Lower Looper or Spreader Bar Connecting Link Pin	2
49	77	Screw, for connecting link pin	1
50	39544 V	Lower Looper or Spreader Bar Driving Lever Shaft	1

* The use of assembly No. 29126 EC is recommended instead of the individual parts.

Technical diagram of a mechanical assembly with numbered parts and torque annotations in inches and pounds

THROAT PLATES, NEEDLE GUARDS, 401 STITCH LOOPER PARTS, UPPER AND LOWER KNIFE MECHANISM

Ref.No.	PartNo.	Description	Amt.Req.
1	39673 A	Upper Knife Driving Arm	1
2	39571 A	Upper Knife Clamp Nut, for Styles 39600 FA, FB, FP and FQ, all gauges	1
3	39572 B	Upper Knife Holder, for Styles 39600 FA, FB, FP and FQ, all gauges	1
4	22829	Screw, for upper knife holder, for Styles 39600 FA, FB, FP and FQ, all gauges	1
5	22650 CB-4	Set Screw, for upper knife, for Styles 39600 FA, FB, FP and FQ, all gauges	1
6	39270 D	Upper Knife, narrow, for Styles 39600 FA-3 1/8 gauge and FB, all gauges	1
6A	39270 E	Upper Knife, wide, for Styles 39600 FA-5 1/8 and 12 3/16 gauge; FP and FQ, all gauges	1
7	39571 E	Upper Knife Clamp, for Styles 39600 FA, FB, FP and FQ, all gauges	1
8	39573 A	Upper Knife Driving Arm Washer	1
9	39573 E	Upper Knife Driving Lever	1
10	55235 D	Locking Stud, for driving lever	1
11	6042 A	Washer, for driving lever	1
12	55235 E	Nut, for driving lever	1
13	39673	Upper Knife Driving Lever Connecting Rod	1
14	22587 E	Screw, for connecting rod	2
15	39644 M	Looper Avoid Link	1
16	22565 C	Set Screw, for bushing and cam guide	1
17	22729 M	Spot Screw, for bushing and cam guide	1
18	39644 K	Bushing and Cam Guide, for Styles 39600 FA and FB	1
-	39644 V	Bushing and Cam Guide, for Styles 39600 FP, FQ, FR, FS	1
19	39644 P	Thrust Collar	1
20	98	Screw, for thrust collar	2
21	39644 U	Looper Drive Lever Auxiliary Connecting Rod	1
22	22729 E	Screw, for connecting rod	2
23	22729 D	Screw, for connecting rod	2
24	39543 M	Clamp Collar	1
25	22562 A	Screw, for clamp collar	1
26	39543 P	Thrust Washer, for lower looper bar	2
27	660-206	"O" Ring, for lower looper drive lever shaft	2
28	39644 N	Lower Looper Drive Lever Shaft	1
29	39644	Lower Looper Drive Lever	1
30	39644 A	Lower Looper Bar (401 stitch)	1
31	39644 R-2	Shim, for ball joint guide fork, .002 inch thick as required
-	39644 R-5	Shim, for ball joint guide fork, .005 inch thick as required
32	39644 X	Ball Joint Guide Fork	1
33	538	Screw, for ball joint guide fork	2
34	22588 J	Screw, for lower knife clamp	1
35	39550 Z	Lower Knife Clamp	1
36	39550 M	Lower Knife Clamp Spring	1
37	482 C	Lower Looper Drive Lever Shaft Collar	1
38	22894 C	Screw, for collar	2
39	39549	Lower Knife, narrow, for Styles 39600 FA and FB	1
39A	39549 J	Lower Knife, wide, for Styles 39600 FP, FQ, FR and FS, all gauges	1
40 to 78		See following page

Technical diagram of a mechanical assembly with numbered parts and labeled torque values in inches and pounds.

THROAT PLATES, NEEDLE GUARDS, 401 STITCH LOOPER PARTS, UPPER AND LOWER KNIFE MECHANISM

Ref.No.	PartNo.	Description	Amt.Req.
1 to 39 A		See preceding page
40	39650	Lower Knife Holder----	1
41	39650 A	Lower Knife Clamp Screw Nut----	1
42	22729 B	Screw, for lower knife holder locating stud----	1
43	39550 C	Lower Knife Holder Locating Stud----	1
44	14077	Nut, for locking screw----	1
45	22892 B	Locking Screw, for lower knife holder----	1
46	88 F	Screw, for needle guard----	1
47	39543 E	Needle Guard Locking Clamp----	1
48	22653 B-12	Screw, for throat plate support bracket----	2
48A	39580 F	Washer, for throat plate support bracket screw----	2
49	39580 AC	Throat Plate and Lower Knife Support Bracket----	1
50	39525 A	Needle Guard, rear, for 504 stitch needle,forStyles 39600 FB, FQ, FS, all gauges----	1
-	39525 J	Needle Guard, rear, for 503 stitch needle, forStyles 39600 FA, FP, FR, all gauges----	1
51	39625 B	Needle Guard, front, for 503 or 504 stitch needle----	1
52	22585 A	Screw, for 503 or 504 stitch needle guards----	2
53	90	Screw, for 401 stitch front needle guard----	1
54	39625 D	Needle Guard, front, for 401 stitch needle, forall Styles, all gauges----	1
55	39825 C	Needle Guard, rear, for 401 stitch needle----	1
56	39624 F-5 1/8	Throat Plate, marked 'CB', for No. 5 1/8 gauge,all Styles----	1
56A	39624 F-12 3/16	Throat Plate, marked 'CA', for No. 12 3/16 gauge,all Styles----	1
-	39624 F-3 1/8	Throat Plate, marked 'CJ', for No. 3 1/8 gauge,Style 39600 FA----	1
57	22524	Screw, for throat plate----	1
58	39550 E	Knife Holder Spring----	1
59	39644 E	Looper Holder, for 401 stitch looper----	1
60	22653 J-4	Screw, for looper holder----	1
61	22564 D	Screw, for 401 stitch looper----	1
62	39608 D	Looper, marked "CX", for 401 stitch, all Styles----	1
63	22503 F	Screw, for cam follower locking clamp----	1
64	39543 E	Cam Follower Locking Clamp----	1
65	39644 W	Lower Looper Bar Sleeve----	1
66	39644 L	Cam Follower----	1
67	22775	Screw, for looper avoid link----	1
68	41336 C	Looper Avoid Link Pin----	1
69	22781	Screw, for looper avoid link pin----	1
70	39678 P	Chip Deflector, for Styles 39600 FA and FB, allgauges----	1
71	187 A	Screw, for chip deflector----	1
72	39571 C	Upper Knife Clamp Stud, for Styles 39600 FR andFS, all gauges----	1
73	39572 A	Upper Knife Holder Block, for Styles 39600 FRand FS, all gauges----	1
74	22738	Screw, for upper knife clamp stud----	1
75	39570 K	Upper Knife, for Styles 39600 FR and FS, all gauges--	1
76	39571 F	Upper Knife Clamp, for Styles 39600 FR and FS,all gauges----	1
77	39571 B	Upper Knife Chain Guard, for Styles 39600 FR andFS, all gauges----	1
78	14077	Nut, for upper knife clamp stud----	1

Exploded view diagram of a Union Special device with numbered parts and exploded views

TOP COVER, EYELETS AND PRESSER SPRING PARTS

Ref. No.	Part No.	Description	Amt. Req.
1	39557 B	Presser Spring Plunger Cap Nut	1
2	39557 E	Presser Spring Plunger Lock Nut	1
3	39557 C	Presser Spring Plunger Adjusting Screw	1
4	39557 F	Lock Nut, for plunger adjusting screw	1
5	39557	Presser Spring	1
6	39556 A	Presser Foot Release Bushing	1
7	39582 AJ	Top Cover	1
8	39582 AF	Oil Filler Cover	1
9	39582 V	Spring, for oil filler cover	1
10	39582 AG	Hinge Bracket	1
11	51-103 Blk.	Hinge Pin	1
12	39582 W	Oil Guard	1
13	22562 A	Screw, for hinge bracket	1
14	39658	Needle Thread Eyelet, for Styles 39600 FB, FQ and FS	1
15	22849 A	Screw, for needle thread eyelet	1
16	22757 E	Screw, for top cover needle thread eyelet	2
17	51758	Needle Thread Eyelet	1
18	53678 N	Washer, for needle thread eyelet screw	1
19	90	Screw, for needle thread eyelet	1
20	39663 J	Top Cover Needle Thread Eyelet, for Styles 39600 FB, FQ and FS, all gauges	1
20A	39663 R	Top Cover Needle Thread Eyelet bracket, for Styles 39600 FA, FP and FR, all gauges	1
21	39557 A	Presser Spring Plunger	1
22	87 U	Screw, for needle thread pull-off eyelet, for Styles 39600 FB, FQ and FS	1
23	87 U	Screw, for needle thread pull-off eyelet, for all Styles	1
24	39663 H	Needle Thread Pull-off Eyelet, for Styles 39600 FA, FP and FR	1
	39663 H	Needle Thread Pull-off Eyelet, for Styles 39600 FB, FQ and FS	2
25	22569 C	Screw, for top cover eyelet bracket	2
26	39663 K	Top Cover Eyelet Bracket	1
27	39582 AE	Top Cover Gasket	1
28	22541	Screw, for top cover	8
29	39668 C	Eyelet Bracket Assembly	1
30	39668 K	Latch Spring Stop Plate	1
31	605	Screw, for latch spring	2
32	39668 G	Latch Spring	1
33	39668 L	Eyelet Bracket	1
34	22570 A	Screw, for eyelet bracket	1
35	39668 F	Arm	1
36	39668 H	Spring Washer, for arm	1
37	660-219 N	Roll Pin, for arm	1
38	22570 B	Screw, for cast-off blade	1
39	53634 C	Washer, for cast-off blade screw	1
40	39668 N	Cast-off Blade	1
41	22829	Screw, for take-up eyelet	1
42	39668 M	Take-up Eyelet	1

Technical diagram of a mechanical assembly with numbered parts and exploded views, including labeled parts and component numbers.

PRESSER FEET, FOOT LIFTER PARTS, THREAD TENSION AND MISCELLANEOUS EYELETS

Ref.No.	PartNo.	Description	Amt.Req.
1	39855	Foot Lifter Lever	1
2	39555 B	Foot Lifter Lever Spring	1
3	39555 D	Foot Lifter Intermediate Lever	1
4	660-142	Cotter Pin, for connecting link	2
5	39555 F	Foot Lifter Lever Connecting Link	1
6	39555 C	Foot Lifter Lever Arm	1
7	12538	Lock Nut, for lever arm	2
8	22597 E	Screw, for lever arm	2
9	627	Screw, for lever arm	1
10	22566 B	Screw, for foot lifter lever	1
11	12865	Thrust Collar, for foot lifter lever shaft	1
12	88	Screw, for thrust collar	2
13	39655	Foot Lifter Lever Shaft	1
14	258 A	Nut, for presser arm screw	1
15	22791 H	Screw, for presser arm	1
16	39656 B	Presser Arm	1
17	39656 A	Chain Cutting Knife, marked "AC"	1
18	605	Screw, for chain cutting knife	1
19	39592 Y	Lower Looper Tension Nut, black, for Styles 39600 FB, FQ and FS	1
	39592 Z	Upper Looper Tension Nut, yellow	1
	39592 AA	Overedge Needle Tension Nut, green	1
	39592 AB	401 Stitch Looper Tension Nut, blue	1
	39592 AC	401 Stitch Needle Tension Nut, red	1
20	39592 AK	Tension Spring Ferrule	4 or 5
21	39592 AR-2	Tension Spring, for 401 stitch looper, all Styles	1
	39592 AR-4	Tension Spring, for 401 stitch needle and 503 stitch looper on Styles 39600 FA, FP and FR, all gauges	2
	39592 AR-4	Tension Spring, for needles and 504 stitch loopers on Styles 39600 FB, FQ and FS, all gauges	4
	39592 AR-8	Tension Spring, for 503 stitch needle on Styles 39600 FA, FP and FR, all gauges	1
22	39592 AD	Thread Tension Disc	8 or 10
23	39592 AF	Tension Disc Felt	4 or 5
24	39592 AL	Thread Tension Post	4 or 5
25	8372 A	Washer, for thread tension post	4 or 5
26	22806 A	Screw, for tension post mounting bracket	1
27	39592 AH	Nut, for thread tension post	4 or 5
28	39592 AG-5	Tension Post Mounting Bracket	1
29	39592 AN	Tension Post Bar	1
30	22847 B	Screw, for tension post mounting bracket	1
31	73 X	Screw, for frame thread guide	2
32	39668 W	Frame Thread Guide, for lower looper thread, for Styles 39600 FB, FQ and FS, all gauges	1
33 to 566		See following page

Technical diagram of a mechanical assembly with numbered parts and exploded views, including labeled parts like 'Union Speed' and various assembly configurations.

PRESSER FEET, FOOT LIFTER PARTS, THREAD TENSION AND MISCELLANEOUS EYELETS

Ref.No.	PartNo.	Description	Amt.Req.
1 to 32		See preceding page
33	376 A	Screw, for looper thread eyelet, Styles 39600 FA, FP and FR----	1
-	376 A	Screw, for looper thread eyelet, Styles 39600 FB, FQ and FS----	2
34	39568 E	Auxiliary Upper Looper Thread Eyelet, for all Styles----	1
35	39568 L	Upper Looper Thread Eyelet, for all Styles----	1
36	39568 B	Lower Looper Thread Eyelet, for Styles 39600 FB, FQ and FS,all gauges----	1
37	43139 A	Nut, for looper thread eyelet screw, for Styles 39600 FA, FPand FR----	1
-	43139 A	Nut, for looper thread eyelet screw, for Styles 39600 FB, FQand FS----	2
38	22569 B	Screw, for eyelet mounting bracket----	1
39	39568 D	Looper Thread Eyelet Mounting Bracket----	1
40	39620 C-5 1/8	Presser Foot, for No. 5 1/8 gauge, Styles 39600 FA and FB----	1
-	39620 C-12 3/16	Presser Foot, for No. 12 3/16 gauge, Styles 39600 FA and FB----	1
41	39630 G	Presser Foot Shank, marked "D", for No. 5 1/8 gauge----	1
-	39630 J	Presser Foot Shank, marked "E", for No. 12 3/16 gauge----	1
42	22781	Clamp Screw----	1
43	39630 AC	Spring----	1
44	39630 L	Lock Nut----	1
45	22799 U	Hinge Screw, for presser foot bottom----	1
46	39630 F-5 1/8	Presser Foot Bottom, marked "AK-5 1/8", for No. 5 1/8gauge----	1
-	39630 F-12 3/16	Presser Foot Bottom, marked "AK-12 3/16", for No.12 3/16 gauge----	1
47	39630 M	Hinge Screw, for needle hole section----	1
48	39630 H	Needle Hole Section, marked "AT", for No. 5 1/8 gauge----	1
-	39630 K	Needle Hole Section, marked "AR", for No. 12 3/16 gauge----	1
49	39620 F-5 1/8	Presser Foot, for No. 5 1/8 gauge, Styles 39600 FP and FQ----	1
-	39620 F-12 3/16	Presser Foot, for No. 12 3/16 gauge, Styles 39600 FP and FQ----	1
-	39620 F-3 1/8	Presser Foot, for No. 3 1/8 gauge, Style 39600 FA----	1
49A	39620 G-5 1/8	Presser Foot, bottom marked "BL", for No. 5 1/8 gauge,Styles 39600 FR and FS----	1
-	39620 G-12 3/16	Presser Foot, bottom marked "BK", for No. 12 3/16 gauge,Styles 39600 FR and FS----	1
50	39630 W	Presser Foot Shank, marked "G", for No. 5 1/8 gauge----	1
-	39630 AA	Presser Foot Shank, marked "L", for No. 3 1/8 gauge----	1
-	39630 X	Presser Foot Shank, marked "F", for No. 12 3/16 gauge----	1
51	22781	Clamp Screw----	1
52	39630 L	Lock Nut----	1
53	39630 AB	Spring----	1
54	22799 Y	Hinge Screw, for presser foot bottom----	1
55	39630 T-5 1/8	Presser Foot Bottom, marked "BL", for No. 5 1/8 gauge----	1
-	39630 T-3 1/8	Presser Foot Bottom, marked "BP", for No. 3 1/8 gauge----	1
-	39630 T-12 3/16	Presser Foot Bottom, marked "BK", for No. 12 3/16gauge----	1
56	39678 X	Chip Deflector, marked "A", for No. 3 1/8 gauge, Style39600 FA, for No. 5 1/8 gauge, Styles 39600 FP and FQ----	1
-	39678 Y	Chip Deflector, marked "B", for No. 12 3/16 gauge, Styles39600 FP and FQ----	1
56A	39678 Z	Finger Guard, marked "C", for Styles 39600 FR and FS----	1
57	22768 B	Screw, for chip deflector or finger guard----	1
58	39630 M	Hinge Screw, for needle hole section----	1
59	39630 U	Needle Hole Section, marked "AV", for No. 5 1/8 gauge----	1
-	39630 Z	Needle Hole Section, marked "AZ", for No. 3 1/8 gauge----	1
-	39630 V	Needle Hole Section, marked "AU", for No. 12 3/16 gauge----	1
*60	29480 LG	Rear Presser Foot Hold Down Kit----	1
61	J87 J	Screw, for presser foot hold down wire----	1
62	90	Screw, for presser foot hold down wire----	1
63	39656 E	Presser Foot Hold Down Wire Bracket----	1
64	41071 G	Nut, for screw No. 90----	1
65	77 B	Screw, for presser foot hold down wire bracket----	1
66	39656 F	Presser Foot Hold Down Wire----	1

* Available as an extra send and charge item.

Technical diagram of mechanical assembly with numbered parts and labeled parts A, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39

THREAD STAND AND ACCESSORIES

Ref.No.	PartNo.	Description	Amt.Req.
1	21101 H-4	Thread Stand, complete, for 4 cones, for Styles39600 FA, FP and FR	1
†1A		Thread Stand, complete, for 6 cones, for Styles39600 FB, FQ and FS	1
2	21114 S-4	Lead Eyelet, for No. 21101 H-4	1
-	21114 AL-5	Lead Eyelet, for 5 threads	1
3	258 A	Nut	8 or 10
4	652-16	Washer	4 or 5
5	21114	Spool Seat Disc	4 or 5
6	21114 W	Spool Pin	4 or 5
7	21104 V	Pad, for thread cone	4 or 5
8	21114 H-4	Eyelet Support, for No. 21101 H-4	1
-	21114 H-6	Eyelet Support, for 6 threads	1
9	22651 CD-4	Screw	1
10	21104 B-24	Thread Stand Rod	1
11	21114 D-4	Spool Seat Support, for No. 21101 H-4	1
-	21114 D-6	Spool Seat Support, for 6 threads	1
12	22651 CD-5	Screw	2
13	21104 H	Nut	1
14	652-16	Washer	1
15	21114 U	Lead Eyelet Ball Split Socket	2
16	21114 A	Thread Stand Base	1
17	22651 CD-4	Screw	1
18	22810	Clamp Screw	1
19	21114 T	Lead Eyelet Socket Ball	1
20	22651 CD-4	Screw	2
21	421 D-34	Foot Lifter Treadle Chain, 34 inches long	1
22	21388 AU	Socket Wrench, for 3/8 inch hexagonal nut holdingfeed eccentric	1
23	21388 W	Wrench, curved double end, 9/32 inch opening	1
24	21227 BF	Feed Eccentric Extractor Hook	1
*25	21209 K	Hexagon Socket Bit, 7/64 inch hexagonal (for usewith handle No. 21209 G)	1
*26	21225-1/16	Looper Gauge, 1/16 inch, for 401 stitch	1
* -	21225-1/8	Looper Gauge, 1/8 inch, for 503 or 504 stitch	1
27	660-272	Thread Tweezers	1
28	21207 B	Screwdriver, 1/8 inch diameter	1
29	660-264	"S" Hook, for treadle chain	2
30	WR64	Wrench, 3/32 inch hexagonal	1
31	WR70	Wrench, 7/64 inch hexagonal	1
*32	29481 J	Edge Guide Assembly	1
33	22569 C	Screw, for edge guide mounting bracket	2
34	604	Screw, for edge guide	2
35	39503 A	Edge Guide	1
36	39603 A	Edge Guide Swinging Arm	1
37	12957 E	Spring Washer	1
38	22758 E	Screw, for edge guide swinging arm	1
39	39603	Edge Guide Mounting Bracket	1

* Available as extra send and charge item.
† Number for complete thread stand not available, order component parts.

NUMERICAL INDEX OF PARTS

Part No.	Page No.	Part No.	Page No.	Part No.	Page No.
22 KH	31	21114 H-6	43	22810	43
28 B	29	21114 S-4	43	22824	23
30-106 Blk	25	21114 T	43	22829	33, 37
40-46	25, 29	21114 U	43	22847 B	39
51-103 Blk	37	21114 W	43	22849 A	37
51-228 Blk	25	21114 AL-5	43	22892 B	35
WR64	43	21207 B	43	22894 C	31, 33
CO67 E	25	21209 K	43	22894 D	25
WR70	43	21225-1/16	43	22894 J	31
73 X	39	21225-1/8	43	22894 AE	23, 31
77	31	21227 BF	43	29477 GW	23
77 B	41	21388 W	43	29477 HJ	23
†86 X	23	21388 AU	43	29477 KN	25
87	29	22503 F	31, 35	29477 KP	25
87 U	25, 29, 31, 37	22519 H	29	29477 MC	25
		22524	35	29480 LG	41
J87 J	41	22541	37	29481 J	43
88	39	22562 A	23, 31, 33, 37	39151	31
88 F	35			39158 U	23
90	23, 35, 37, 41	22564 D	35	39270 D	33
		22564 G	31	39270 E	33
93	27	22565	23, 31	39501 K	23
93 A	27, 29	22565 C	33	39501 DF	23
95	25	22565 F	27	39503 A	43
97	31	22565 H	31	39508 A	31
97 A	25	22565 S	23, 31	39508 B	31
98	33	22566 B	39	39521 D	25
138	23	22569	23	39521 G	25
154 GAS	29	22569 B	25, 27, 29, 41	39525 A	35
161 GS	29			39525 J	35
187 A	35	22569 C	37, 43	39532 A	23
258	25, 29	22569 D	23	39534	27
258 A	39, 43	22569 G	27	39534 H	27
376 A	41	22569 K	23	39534 R	23
421 D-34	43	22570 A	37	39534 GA	27
482 C	31, 33	22570 B	37	39535 C	27
531	29	22571 E	23	39535 D	27
538	31, 33	22585 A	35	39535 J	27
604	43	22586 R	23	39536 B	27
605	37, 39	22587 E	33	39536 C	29
627	39	22587 M	25	39536 E	29
652-16	43	22588 J	33	39536 AE	29
660-142	39	22596 H	25	39536 AF	29
660-206	31, 33	22597 E	39	39538	27
660-207	29	22650 CB-4	33	39540 B-9	29
660-210	23	22651 CD-4	43	39540 B-10	29
660-219 N	37	22651 CD-5	43	39540 B-11	29
660-243	23	22653 B-12	35	39541 A	25
660-264	43	22653 D-4	23	39543	31
660-268	25	22653 J-4	35	39543 A	31
660-272	43	22657 D-12	23	39543 E	31, 35
666-94	25	22729 B	35	39543 K	31
666-255	31	22729 D	31, 33	39543 M	31, 33
667 D-8	23	22729 E	31, 33	39543 P	31, 33
667 H-16	23	22729 M	33	39543 S	31
1025 L	31	22738	35	39543 T	31
6042 A	33	22743	23	39543 U	31
8372 A	29, 39	22747 B	25	39543 W	31
12538	39	22757 E	37	39543 X	31
12865	39	22758 E	43	39543 Y	29
12957 E	43	22768	29	39544	31
12982	31	22768 B	41	39544 B	31
14077	35	22768 C	25	39544 D	31
21101 H-4	43	22769 B	25	39544 J	31
21104 B-24	43	22775	35	39544 L	25
21104 H	43	22781	35, 41	39544 U	31
21104 V	43	22782 A	29	39544 V	31
21114	43	22784 E	29	39549	33
21114 A	43	22791 H	39	39549 J	33
21114 D-4	43	22799 U	41	39550 C	35
21114 D-6	43	22799 Y	41	39550 E	35
21114 H-4	43	22806 A	39	39550 M	33
+77 K	29
*660-443	25

NUMERICAL INDEX OF PARTS

Part No.	Page No.	Part No.	Page No.	Part No.	Page No.
39550 Z	33	39592 AH	39	39644 K	33
39552 C	29			39644 L	35
39552 P	25	39592 AK	39	39644 M	33
39552 R	29	39592 AL	39	39644 N	33
39552 U	25	39592 AN	39	39644 P	33
39555 B	39	39592 AR-2	39	39644 R-2	31, 33
39555 C	39	39592 AR-4	39	39644 R-5	31, 33
39555 D	39	39592 AR-8	39	39644 S	25
39555 E	25	39593 C	23	39644 U	33
39555 F	39	39593 D	23	39644 V	33
39555 N	25	39593 H	23	39644 W	35
39556 A	37	39594 G	23	39644 X	31, 33
39557	37	39594 H	23	39650	35
39557 A	37	39594 N	25, 29, 31	39650 A	35
39557 B	37	39594 R	23	39652-3	29
39557 C	37	39595	23	39652-5	29
39557 E	37	39603	43	39652-12	29
39557 F	37	39603 A	43	39652 B	29
39560 B	31	39605 F-3 1/8	27	39652 C	29
39568 B	41	39605 F-5 1/8	27	39652 D	29
39568 D	41	39605 F-12 3/16	27	39652 E	29
39568 E	41	39605 G-5 1/8	27	39655	39
39568 G	23	39605 G-12 3/16	27	39656 A	39
39568 J	23	39605 H-5 1/8	27	39656 B	39
39568 L	41	39605 H-12 3/16	27	39656 E	41
39568 P	23	39608 D	35	39656 F	41
39570 K	35	39620 C-5 1/8	41	39658	37
39571 A	33	39620 C-12 3/16	41	39663 H	37
39571 B	35	39620 F-3 1/8	41	39663 J	37
39571 C	35	39620 F-5 1/8	41	39663 K	37
39571 E	33	39620 F-12 3/16	41	39663 L	29
39571 F	35	39620 G-5 1/8	41	39663 R	37
39572 A	35	39620 G-12 3/16	41	39668 C	37
39572 B	33	39624 F-3 1/8	35	39668 F	37
39573 A	33	39624 F-5 1/8	35	39668 G	37
39573 E	33	39624 F-12 3/16	35	39668 H	37
39573 K	25			39668 K	37
39573 AA	25	39625 B	35	39668 L	37
39578 F	23			39668 M	37
39578 M	29	39625 D	35	39668 N	37
39578 P	29	39626 C	27	39668 P	29
39580 F	35	39626 D	27	39668 R	23
39580 AC	35	39626 E	27	39668 W	39
39582 F	23	39626 F	27	39673	33
39582 V	37	39626 G	27	39673 A	33
39582 W	37	39626 H	27	39678 P	35
39582 Y	23	39626 L	27	39678 U	23
39582 AE	37	39630 F-5 1/8	41	39678 X	41
39582 AF	37	39630 F-12 3/16	41	39678 Y	41
39582 AG	37	39630 G	41	39678 Z	41
39582 AJ	37	39630 H	41	39678 AB	23
39582 DA	23	39630 J	41	39678 AC	23
39582 XD	23	39630 K	41	39680	27
39590	25	39630 L	41	39690 A	25
39590 G	25	39630 M	41	39690 B	25
39590 H	25	39630 T-3 1/8	41	39691	25
39590 J	25	39630 T-5 1/8	41	39694	31
39590 N	25	39630 T-12 3/16	41	39825 C	35
39590 R	25	39630 U	41	39855	39
39590 S	25	39630 V	41	39878 C	23
39590 T	25	39630 W	41	39890	25
39591 H	25	39630 X	41	41071 G	23, 41
39591 K	25	39630 Z	41	41336 C	35
39591 L	25	39630 AA	41	43139 A	41
39592 Y	39	39630 AB	41	43443 Q	23
39592 Z	39	39630 AC	41	51758	37
39592 AA	39	39635	27	53634 C	27, 37
39592 AB	39	39644	33	53678 N	23, 37
39592 AC	39	39644 A	33	55235 D	33
39592 AD	39	39644 C	25	55235 E	33
39592 AF	39	39644 E	35
39592 AG-5	39	39644 F	31

Union Special Wants to Help You Cut Sewing Machine Maintenance Costs

Union Special is offering two practical systems to help pinpoint and reduce your sewing machine maintenance costs: a record keeping system to help spot machines requiring abnormally high maintenance, and a parts inventory system to speed routine repairs. Machine Maintenance Records

Repair-prone machines or inexperienced competent operators can eat up your maintenance dollars in short order. To help spot these problems. Union Special suggests two variations of a simple maintenance record keeping system using cards provided by Union Special.

The first system utilizes a "Machine Maintenance Record" card (Form 237) for each sewing machine in a plant. When a repair is required, the card is pulled from the file and the repair date, parts used, and their cost are entered in the spaces provided and the card is refiled.

MACHINE MAINTENANCE RECORD MAKERS NAME STYLE TYPE NEEDLE BEDIAL NO.DATE PUNCH. DATE SYMBOL PART USED GOT DATE SYMBOL PART USED COST FORM 237- Machine Maintenance Record card

The second system is normally used when more detailed information on repair costs is desired. Two record cards are used: a "Repair Request Card" (Form 234), and a "Machine Repair Record" (Form 233). When a machine requires service, the forelady or foreman fills out the top of a "Repair Request Card" and gives it to a mechanic. He fills in the time the repair work is started, the parts used and their cost,

and the completion time. This data is then transferred to the permanen: "Machine Repair Record" kept in the office.

Whichever system is used, management now has an invaluable too to reduce needless maintenance costs.

Repair Part Inventories

While record keeping tells management which machines require abnormally high maintenance, it does little to help reduce the downtime caused by routine repairs. To alleviate this situation, Union Special recommends that manufacturers establish a formal parts inventory system for each type of sewing machine they operate.

Excessive machine downtime and wasted hours by mechanics can be eliminated with an orderly in-plant inventory of the most commonly needed parts. There is no longer a need to cannibalize other machines for spare parts. Long waits for deliveries are avoided and machine downtime is kept to a minimum. The cost of a parts inventory is small when the overall savings are considered.

MACHINE REPAIR RECORD CARD MAKER NAME MAKER NAME DATE MARKER NAME PARTS USED REPAIR REQUEST CARD DATE: INFORMATION NUMBER: PACS NUMBER: RACE MANUAL NO. CREATOR NO. PARTS USED ITEMS PAGE PART NUMBER CART FORM 233- Machine Repair Record card FORM 234- Repair Request Card TIME STARTED: TIME COMPLETED: MECHANIC NO. : 1000 HORN BY: 00000000000000000000000000000000000000000000000000000000000000000000000000000000 FOM 233- MACHINE Repair Record card

For free sample copies of the machine record cards and spare part inventory lists for a variety of the most popular machines, contact your local Union Special Representative or write direct to Union Special.

UnionSpecial®

Style 39600 FP

Suggested Minimum Spare Parts List*

Part Number	Description	Minimum Quantity Per 5 Machines	Part Number	Description	Minimum Quantity Per 5 Machines
39620 F-5-1/8 or	Presser foot	1	39630 L	Lock nut for hinge screw	2
			22799 Y	Hinge screw for presser foot bottom	2
39620 F-12-3/16	Presser foot	1	39549 J	Lower knife (wide)	6
22781	Presser foot clamp screw	2	39270 E	Upper knife (wide)	6
39630 AB	Presser foot spring	2	22629	Screw for upper knife holder	2
39605 F-5-1/8 or	Main feed dog for 5-1/8 gauge	1	22650 CB-4	Set screw for upper knives	2
			39571 A	Upper knife clamp nut	2
39605 F-12-3/16	Main feed dog for 12-3/16 gauge	1	22588 A	Screw for lower knife clamp	2
93 A	Screw for main feed dog	4	39650 A	Lower knife clamp screw nut	2
39626 D or	Differential feed dog for 5-1/8 gauge	1	39550 Z	Lower knife clamp	2
			39608 D	401 stitch looper	2
39626 F	Differential feed dog for 12-3/16 gauge	1	22564 D	Screw for 401 stitch looper	4
			22653-J-4	Screw for 401 stitch looper holder	4
93	Screw for differential feed dog	4	39508 A	Upper looper (all gauges)	2
39624 F-5-1/8 or	Throat plate 5-1/8 gauge	1	22564 G	Screw for upper looper	6
			39560 B	Lower spreader (all gauges)	2
39624 F-12-3/16	Throat plate for 12-3/16 gauge	1	39151	Nut for lower spreader bar	4
22524	Throat plate screws	6	22519 H	Clamp screw for needle driving arm	4
154 GAS	503 stitch needles (specify size)	100	28 B	Screws for needles	12
161 GS	401 stitch needles (specify size)	100	22784 E	Screw for thread eyelet	4
39630 M	Hingescrew for needle hole section	2	29480 LG	Kit of parts for holding rear of foot down	1
*The parts and quantities listed above are intended to assist you in setting up the initial inventory of spare parts. An efficient inventory can only be established according to actual usage. The nature of the sewing operation will determine actual usage.			21225 1/8	Looper gauge	1
			21225 1/16	Looper gauge	1
			29484	Screw assortment	1

World map illustration showing continents and latitude/longitude lines (no text or labels)

WORLDWIDE SALES AND SERVICE

Union Special Corporation maintains sales and service facilities throughout the world. These offices will aid you in the selection of the right sewing equipment for your particular operation. Union Special Corporation representatives and service technicians are factory trained and are able to serve your needs promptly and efficiently. Whatever your location, there is a qualified representative to serve you.

Corporate Office:

One Union Special Plaza

Huntley, IL 60142

Phone: 708·669·5101

Fax: 708·669·1096

European Distribution Center:

Union Special GmbH

Raffleisenstrasse 3

D-71696 Möglingen, Germany

Tel: [phone]

Fox: 49·7141·247·100

Brussels, Belgium

Charlotte, N.C.

Commerce, CA

El Paso, TX

Hong Kong, China

Huntley, IL

Leicester, England

Lille, France

Miami, FL

Milan, Italy

Mission, TX

Möglingen, Germany

Montreal, Quebec

Osaka, Japan

Other Representatives throughout all parts of the world.

Finest Quality

Union Special INDUSTRIAL SEWING EQUIPMENT