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USER MANUAL 52800BS Union Special
Union Special INDUSTRIAL SEWING EQUIPMENT
CATALOG NO. 111L
STYLES
| 52800BA | 52800BR |
| 52800BC | 52800BS |
| 52800 BD | 52800BT |
| 52800BE | 52800BU |
| 52800BF | 52800 BV |
| 52800BM | 52800BW |
| 52800BN | 52800BX |
| 52800BP | 52800BY |
STREAMLINED
FIFTY THOUSAND SERIES
Catalog No. 111 L
LIST OF PARTS
Styles
| 52800 BA | 52800 BR |
| 52800 BC | 52800 BS |
| 52800 BD | 52800 BT |
| 52800 BE | 52800 BU |
| 52800 BF | 52800 BV |
| 52800 BM | 52800 BW |
| 52800 BN | 52800 BX |
| 52800 BP | 52800 BY |
First Edition
Copyright 1961
By
Union Special Corporation
Rights Reserved in All Countries
INDUSTRIAL SEWING MACHINES
CHICAGO
Printed in U.S.A.
March, 1981
IDENTIFICATION OF MACHINES
Each UNION SPECIAL machine carries a Style number which is stamped in 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 52800 BA". 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: "52800 BAZ".
The over-all width of the stitch or the distance between the outside needles (extreme left and right) is represented by a gauge number. The actual spacing between the center lines of the outside needles, as applied to these machines, is as follows: No. 8 gauge, .125 inch, No. 10 gauge, .156 inch, No. 12 gauge, .172 inch, No. 14 gauge, .203 inch and No. 16 gauge, .234 inch.
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 machines in this Class. References to direction such as right, left, front, back, etc., are given from the operator's position while seated at the machine. Operating direction of handwheel is toward the operator.
STYLES OF MACHINES
High Speed, Streamlined Flat Bed, Medium Throw Machines, Two and Three Needles Abreast, One Looper, Four and Five Thread Interlock Stitch, Light Weight Presser Bar and Needle Bar Driving Mechanism, Single Reservoir Enclosed Automatic Lubricating System, Filter Type Oil Return Pump and Oil Siphon Assembly, Oil Pan Base Plate, Lateral Looper Travel, Work Space to Right of Needle Bar 7 3/4 Inches.
* 52800 BA Two needle four thread interlock machine, for attaching split tube borders to neck and armholes of knitted cotton and rayon athletic shirts, and for similar operations on light to medium weight material. For use with long length strips of light weight flat knit strip cut parallel with the wale. Wrench adjusted offset differential feed. Treadle operated intermittent strip tension, for releasing tension on armholes and straight sections of neck. Seam specification, 602-BSa-1. Type 121 GS needle. Standard gauge No. 8 only. Standard finished width 1/2 inch only.
* 52800 BC Three needle five thread interlock machine, for attaching elastic waistband or leg bands to girdles. Wrench adjusted offset differential feed. Prepared for use with Galkin or Peerless undertrimmer. Adjustable elastic strip guide, tension assembly and tape reel for elastic. Seam specification, 605-LSa-3. Type 121 GBS needle. Standard gauge No. 16 only. Presser foot and differential feed dog not furnished.
* 52800 BD Two needle four thread interlock machine, for attaching elastic waistband or leg bands to girdles. Wrench adjusted offset differential feed. Prepared for use with Galkin or Peerless undertrimmer. Adjustable elastic strip guide, tension assembly and tape reel for elastic. Seam specification, 602-LSa-2. Type 121 GBS needle. Standard gauge No. 12 only. Presser foot and differential feed dog not furnished.
* 52800 BE Three needle five thread interlock machine, for joining main seams on girdles. Wrench adjusted tandem differential feed. Adjustable elastic strip guide, tension assembly and tape reel for elastic. Seam specification, 605-LSa-3. Type 121 GBS needle. Standard gauge No. 16 only.
* 52800 BF Two needle four thread interlock machine, for attaching elastic waistband or leg bands to girdles. Wrench adjusted tandem differential feed. Adjustable elastic strip guide, tension assembly and tape reel for elastic. Seam specification, 602-LSa-2. Type 121 GBS needle, Standard gauge No. 12 only.
* 52800 BM Three needle five thread interlock machine, for attaching cuffs in one operation to knitted undergarments, and for similar operations on medium to medium heavy weight material. Wrench adjusted offset differential feed. Seam specification, 605-LSa-1. Type 121 GBS needle. Standard gauge No. 16 only.
STYLES OF MACHINES (Continued)
* 52800 BN Three needle five thread interlock machine, for single operation crotch seaming, and for similar operations on medium to medium heavy weight material. Wrench adjusted tandem differential feed. Seam specification, 605-FSa-1. Type 121 GBS needle. Standard gauge No. 16 only.
* 52800 BP Two needle four thread interlock machine, for attaching split tube borders to neck and armholes of light weight knitted cotton and rayon athletic shirts, and for similar operations on light to medium weight material. For use with long length light weight flat knit strip cut parallel with the wale. Wrench adjusted offset differential feed. Treadle operated intermittent striptension, for releasing tension on armholes and straight sections of neck. Seam specification, 602-BSa-1. Type 121 GS needle. Standard gauge No. 8 only. Standard finished widths 7/16, 1/2, 5/8 and 3/4 inch.
* 52800 BR Same as 52800 BP, except it is equipped with treadle controlled intermittent differential feed and is not equipped with intermittent strip tension. Constant strip tension.
* 52800 BS Two needle four thread interlock machine, for attaching split tube borders to men's, women's and children's knitted cotton, nylon and rayon underwear. Tee shirts, polo shirts, and for similar operations on light to medium weight material. For use with long length light weight flat knit strip cut parallel with the wale. Wrench adjusted offset differential feed. Constant strip tension. Seam specification, 602-BSa-1. Type 121 GS needle. Standard gauge No. 8 only. Standard finished widths 1/2, 5/8, 3/4, 7/8 and 1 inch.
* 52800 BT Two needle four thread interlock machine, for attaching elastic and previously made lace to knitted undergarments, and for similar operations on light to medium weight material. Wrench adjusted tandem differential feed. Adjustable elastic strip guide and tension assembly. Seam specification, 602-FSa-1. Type 121 GS needle. Standard gauge Nos. 8, 10 and 12.
* 52800 BU Two needle four thread interlock machine, for attaching collarettes to knitted undergarments, and for similar operations on light to medium weight material. For use with long length ribbed knit strip cut at right angle to the wale or parallel with the wale. Wrench adjusted offset differential feed. Constant strip tension. Seam specification, 602-BSa-1. Type 121 GS needle. Standard gauge Nos. 8 and 12. Standard finished widths 3/4, 7/8, 1 and 1 1/4 inches.
* 52800 BV Two needle four thread interlock machine, for attaching collarettes to knitted undergarments, and for similar operations on light to medium weight material. For use with long length flat knit or ribbed knit strip cut at right angle to the wale or parallel with the wale. Wrench adjusted offset differential feed. Constant strip tension. Seam specification, 602-BSb-1. Type 121 GS needle. Standard gauge Nos. 8 and 12. Standard finished widths 1/2, 5/8, 3/4, 7/8, 1 and 1 1/4 inches.
* 52800 BW Three needle five thread interlock machine, for attaching collarettes to knitted undergarments, and for similar operations on light to medium weight material. For use with long length ribbed knit strip cut at right angle to the wale or parallel with the wale. Wrench adjusted offset differential feed. Constant strip tension. Seam specification, 605-BSa-1. Type 121 GBS needle.Standard gauge Nos. 14 and 16. Standard finished widths 3/4, 7/8, 1 and 1 1/4 inches.
* 52800 BX Three needle five thread interlock machine, for patch operations on flat and ribbed knit undergarments, and for similar operations on light to medium weight material. Wrench adjusted tandem differential feed. Seam specification, 605-SSa-1. Type 121 GBS needle. Standard gauge No. 16 only.
*52800 BY Same as 52800 BS, except no folder, folder clamp or edge guide furnished.
* MACHINES DISCONTINUED In most instances, component parts can be ordered for customer repair.
NEEDLES
Each needle has a type number and size number. The type number denotes the kind of shank, point, length groove, finish and other details. The size number denotes the largest diameter of the blade, measured in thousandths of an inch, midway between the shank and the eye, and is stamped in the needle shank. Collectively, the type number and size number is the complete symbol.
NEEDLES (Continued)
To have orders promptly and accurately filled, forward the empty package, a sample needle, or the type and size number should be given. See description on packages. A complete order would read as follows: "1000 Needles, Type 121GS, Size 080/032".
The type numbers of the needles recommended for each style of machine covered by this catalog are given in the machine style description. Other needles are available, but the ones indicated are those recommended to produce the most satisfactory results. The type numbers of the recommended needles, together with their description, and the sizes available are listed below:
| 121 GS | Round shank, round point, short, double groove, struck groove, chromium plated - sizes 065/025, 070/027, 075/029, 080/032, 090/036, 100/040, 110/044, 125/049, 140/054. |
| 121 GBS | Round shank, round point, short, single groove, struck groove, ball point chromium plated - sizes 065/025, 070/027, 075/029, 080/032, 090/036, 100/040. |
Selection of the proper needle size should be determined by the size of thread used. Thread should pass freely through needle eye in order to produce a good stitch formation.
ORDERING REPAIR PARTS
ILLUSTRATIONS
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 number, description and the number of pieces required in the particular view being shown.
The 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 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:
| 67 | 29476 LE | Looper Driving Lever Crank Assembly | 1 |
| 68 | 22559 A | Screw, lower | 2 |
| 69 | 51243 C | Ball Stud Guide | 1 |
| 70 | 22729 | Screw | 1 |
| 71 | 22587 | Screw, upper | 2 |
It will be noted in the above example that the eccentric, ball stud and bearing are not listed. The reason is that replacement of these parts individually is not recommended, so the complete sub-assembly should be ordered.
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 illustration.
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
Where the construction permits, each part is stamped with its part number. On some of the smaller parts, and on those where construction does not permit, an identification letter is stamped in to distinguish the part from similar ones.
Part numbers represent the same part, regardless of catalog in which they appear.
IMPORTANT! ON ALL ORDERS, PLEASE INCLUDE PART NAME AND STYLE OF MACHINE FOR WHICH PART IS ORDERED.
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 subsidiaries and authorized distributors. They are designed according to the most approved scientific principles, and are made with utmost precision. Maximum efficiency and durability are assured.
TERMS
Prices are 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 the postage and insurance.
OILING AND THREADING DIAGRAM
The oil has been drained from the machine before shipping, and the reservoir must be filled before beginning to operate. Use a straight mineral oil with a Saybolt viscosity of 90 to 125 seconds at 100^ Fahrenheit.
Oil is filled at the spring cap "A" in the top cover, and the level is checked at the sight gauge "B" on the front of the machine. The oil level should be maintained between the red lines on the gauge. The capacity of the oil reservoir is 12 ounces.
The machine is automatically lubricated, and no oiling, other than keeping the main reservoir filled, is necessary.
When oil level rises above the line of gauge "C", and does not recede, this indicates the oil siphon tube is not functioning properly. Drain excess oil by removing plug screw "D".
A daily check before the morning start should be made, and oil added if required. Oil which has gone through the machine is filtered and pumped back into the main reservoir, making too frequent oilings unnecessary. Excessive oil in the main reservoir may be drained at the plug screw in the main frame directly under the handwheel.
On the next page is a picture showing the manner in which the 52800 Styles covered in this catalog are threaded. The three needle machines are threaded in substantially the same manner. The spreader and looper threading has been enlarged for clarity.
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Technical diagram of a sewing machine with numbered parts labeled A, B, C, D, and others for identification.
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Industrial machinery setup with pipes and components, no visible text or symbols
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Mechanical assembly diagram showing gears and shafts with no visible text or symbols
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Technical diagram of a sewing machine with numbered parts and exploded view, showing internal components and assembly relationships.MAIN FRAME, CAST-OFF PLATE AND MISCELLANEOUS COVERS
| Ref.No. | PartNo. | Description | AmtReq |
| 1 | 93 | Screw | 2 |
| 2 | BB21375 AH | Belt Guard | 1 |
| 3 | 52 A | Frame Thread Eyelet, for Styles 52800 BC, BD, BE, BF, BM, BN, BR, BS, BT, BU, BV, BW, BX, BY | 1 |
| 4 | 98 A | Screw | 2 |
| 5 | 52858 | Frame Thread Eyelet, for Styles 52800 BA, BP | 1 |
| 6 | 52958 B | Frame Thread Eyelet | 1 |
| 7 | 52942 Y | Looper Drive Lever Shaft Synchronizing Stud | 1 |
| 8 | 22768 | Screw | 1 |
| 9 | 87 U | Screw | 1 |
| 10 | 52904 E | Cast-off and Retaining Finger Support Bracket | 1 |
| 11 | 50-216 Blk. | Dowel Pin | 1 |
| 12 | 51291 A | Looper Thread Guard, for Style 52800 BX | 1 |
| 13 | 52804 E | Retainer Support | 1 |
| 14 | 73 A | Screw | 1 |
| 15 | 52904 G | Cast-off Wire | 1 |
| 16 | 50-216 Blk. | Dowel Pin | 2 |
| 17 | 52957 C | Cast-off Support Plate | 1 |
| 18 | 21657 E | Washer | 1 |
| 19 | 22528 | Screw | 1 |
| 20 | 52958 D | Looper Thread Take-up Eyelet | 2 |
| 21 | 73 A | Screw | 2 |
| 22 | 22516 | Screw | 1 |
| 23 | 52904 B | Retaining Finger | 1 |
| 24 | 22799 M | Screw | 1 |
| 25 | 22711 | Screw | 1 |
| 26 | 52885 L | End Cover Spring | 1 |
| 27 | 57885 | End Cover Hinge, front | 1 |
| 28 | 57885 B | End Cover Hinge, rear | 1 |
| 29 | 22848 | Screw | 4 |
| 30 | 52985 | End Cover, for Styles 52800 BA, BC, BD, BE, BF, BM, BN, BP, BS, BT, BU, BV, BW, BX, BY | 1 |
| 31 | 52985 A | End Cover, for Style 52800 BR | 1 |
| 32 | 22572 A | Screw | 1 |
| 33 | 294 | Screw, for Styles 52800 BA, BM, BN, BP, BR, BS, BU, BV, BW, BX, BY | 4 |
| 294 | Screw, for Styles 52800 BC, BD, BE, BF, BT | 2 | |
| 34 | 52882 R | Head Cover | 1 |
| 35 | 52882 Z | Felt Liner | 1 |
| 36 | 50-648 Blk. | Oil Gauge | 1 |
| 37 | 52882 W | Gasket | 1 |
| 38 | 22542 | Screw | 1 |
| 39 | 22597 | Screw, for Style 52800 BR | 2 |
| 40 | 52882 S | Gasket | 1 |
| 41 | 22513 | Screw | 4 |
| 42 | 35731 A | Presser Bar Connection Guide Plate | 2 |
| 43 | 52844 A | Thread Guide | 1 |
| 44 | 90 | Screw | 2 |
| 45 | 35582 B | Thread Guide | 1 |
| 46 | 22517 C | Supplementary Tension Screw, front | 1 |
| 47 | 15438 B | Supplementary Tension Disc | 2 |
| 48 | 15438 C | Supplementary Tension Spring, front | 1 |
| 49 | 15438 D | Supplementary Tension Stud | 1 |
| 50 | 22848 | Screw | 1 |
| 51 | 20 | Washer | 1 |
| 52 | 539 | Frame Thread Eyelet | 1 |
| 53 | 22889 A | Plug Screw | 1 |
| 54 | 719 | Screw | 2 |
| 55 | 22539 D | Plug Screw | 1 |
| 56 | 56382 AC | Needle Lever Bearing Oiler and Baffle Plate Assembly | 1 |
| 57 | 90 | Screw | 2 |
| 58 | 52882 P | Gasket | 1 |
| 59 | 52882 AD | Chamber Cover | 1 |
| 60 | 90 | Screw | 2 |
| 61 | 52882 AA | Drip Plate | 1 |
| 62 | 50-789 Blk. | Oil Cap Hinge Pin | 1 |
| 63 | 52882 AC | Oil Cap Torsion Spring | 1 |
| 64 | 39582 L | Oil Cap | 1 |
| 65 | 22541 B | Screw | 3 |
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Technical diagram of a sewing machine with numbered parts and exploded views, including front, side, and top views.CLOTH PLATE, MISCELLANEOUS COVERS AND EDGE GUIDES
| Ref. No. | Part No. | Description | Amt. Req. |
| 1 | 52801 G | Cloth Plate | 1 |
| 2 | 80 | Screw | 2 |
| 3 | 22839 C | Screw | 2 |
| 4 | 52802 D | Cloth Plate Slide Cover, for Styles 52800 BA, BC, BD, BF, BP, BR, BS, BU, BV, BW, BY | 1 |
| 4A | 52978 V | Knob | 1 |
| 5 | 52802 C | Cloth Plate Slide Cover, for Styles 52800 BE, BM, BN, BT, BX | 1 |
| 5A | 52978 V | Knob | 1 |
| 6 | 52864 R | Folder Support Platform, for Styles 52800 BA, BP, BR, BS, BU, BV, BY | 1 |
| 7 | 90 | Screw | 2 |
| 8 | Throat Plate (See Pages 27, 29) | 1 | |
| 9 | 87 | Screw | 2 |
| 10 | 22839 | Screw | 2 |
| 11 | 52880 | Throat Plate Support | 1 |
| 11A | 51280 J | Dowel Pin | 2 |
| 12 | 43281 K | Hinge Bracket Spring | 1 |
| 13 | 90 | Screw | 2 |
| 14 | 52982 F | Oil Reservoir Top Cover | 1 |
| 15 | 22585 A | Screw | 2 |
| 16 | 22524 | Screw | 7 |
| 17 | 51382 A | Gasket | 1 |
| 18 | 22548 | Screw | 4 |
| 19 | 52882 AF | Crank Chamber Cover, lower | 1 |
| 20 | 52882 U | Gasket | 1 |
| 21 | 52864 U | Swinging Arm Platform, for Styles 52800 BF, BT | 1 |
| 22 | 35772 D | Pin | 1 |
| 23 | 12957 E | Spring Washer | 1 |
| 24 | 22735 | Screw | 1 |
| 25 | 5003 | Cloth Plate Gauge, for Styles 52800 BF, BT | 1 |
| 26 | 357 | Screw | 1 |
| 27 | 52982 E | Gasket | 1 |
| 28 | 52982 D | Oil Reservoir Back Cover | 1 |
| 29 | 41394 A | Gasket | 2 |
| 30 | 22733 B | Screw | 1 |
| 31 | 22848 | Screw | 9 |
| 32 | 52864 T | Folder Support Swinging Arm Platform, for Styles 52800 BE, BM, BN, BX | 1 |
| 33 | 93 A | Screw, for Styles 52800 BE, BF, BM, BN, BT, BX | 2 |
| 34 | 10303 A | Cloth Plate Gauge, for Styles 52800 BE, BM | 1 |
| 35 | 23425 V | Washer Plate | 1 |
| 36 | 25 C | Screw | 2 |
| 37 | 57764 A | Folder Support Platform, for Style 52800 BW | 1 |
| 38 | 23133 M | Edge Guide, 5/64 inch capacity | 1 |
| 39 | 23133 L | Edge Guide, 3/64 inch capacity, for Styles 52800 BS, BU, BV, BW | 1 |
| 40 | 22561 | Screw | 2 |
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Technical diagram of a Unisal test instrument with numbered parts and exploded view, labeled with letters A–F.MAIN FRAME, BUSHINGS AND MISCELLANEOUS PARTS
| Ref.No. | PartNo. | Description | Amt.Req. |
| 1 | 51493 BQ | Pump Driven Gear | 1 |
| 2 | 531 | Screw | 2 |
| 3 | 643-127 Blk. | Gasket | 1 |
| 4 | 51493 AG | Oil Pump Housing | 1 |
| 5 | 51493 D | Oil Pump Driving Shaft | 1 |
| 6 | 51493 E | Driving Shaft Gear | 2 |
| 7 | 51493 AH | Oil Pump Housing Cover | 1 |
| 8 | 22569 B | Screw | 3 |
| 9 | 22645 H-64 | Screw | 1 |
| 10 | 22823 A | Screw | 1 |
| 11 | 39595 | Mounting Isolators | 4 |
| 12 | 51295 B | Mounting Isolators | 2 |
| 13 | 22823 B | Screw | 1 |
| 14 | 51493 AZ | Oil Pan Base Plate | 1 |
| 14A | 51493 BG | Base Plate Oil Pad | 1 |
| 15 | 51493 BH | Filter Cap Assembly | 1 |
| 16 | 51493 BJ | Washer, sponge rubber | 1 |
| 17 | 52944 T | Looper Rocker Shaft Bushing, left | 1 |
| 18 | 52894 AK | Oil Tube, for looper rocker and left ball joint | 1 |
| 18A | 22560 B | Screw | 1 |
| 19 | 51493.BK | Lint Filter Screen | 1 |
| 20 | 52942 W | Looper Drive Lever Shaft Bushing, front | 1 |
| 21 | 52944 U | Looper Rocker Shaft Bushing, right | 1 |
| 22 | 52890 C | Main Shaft Bushing, left, inner right and Rocker Shaft Bushing, upper right | 3 |
| 23 | 51290 T | Main Shaft Bushing, middle | 1 |
| 24 | 57842 B | Looper Drive Lever Shaft Bushing, rear | 1 |
| 25 | 52936 | Feed Rocker Shaft Bushing, left and right | 2 |
| 26 | 660-136 | Oil Tube, for feed crank link | 1 |
| 27 | 258 A | Nut | 1 |
| 28 | 52894 AB | Oil Tube Holder | 3 |
| 29 | 90 | Screw | 3 |
| 30 | 52794 G | Oil Tube, for feed, left and looper avoid eccentric | 1 |
| 31 | 52894 AD | Oil Tube, for differential feed bar shaft | 1 |
| 32 | 52894 AE | Oil Tube, for differential feed bar guide | 1 |
| 33 | 22706 A | Plug Screw | 1 |
| 34 | 666-99 | Oil Wick, with spring, for spreader rocker shaft | 1 |
| 35 | 51254 C | Needle Bar Bushing, upper | 1 |
| 36 | 52890 C | Rocker Shaft Bushing, upper left | 1 |
| 37 | 52894 K | Oil Tube Assembly | 1 |
| 38 | 294 | Screw | 1 |
| 39 | 52994 V | Oil Siphon Clamp | 1 |
| 40 | 51154 D | Needle Bar Bushing, lower | 1 |
| 41 | 52994 U | Oil Siphon Tube | 1 |
| 42 | 666-214 | Felt Lint Filter | 1 |
| 43 | 52883 R | Presser Foot Lifter Lever Bushing | 1 |
| 44 | 51294 Y | Oil Tube Connection | 1 |
| 45 | 21212 | Oil Siphon Connection Locking Ring | 2 |
| 46 | 21657 X | Tension Release Lever Shaft Bushing | 1 |
| 47 | 666-201 | Felt Plug | 1 |
| 48 | 666-209 | Siphon Cup Disc, felt | 1 |
| 49 | 51294 U | Oil Siphon Assembly | 1 |
| 50 | 643-263 Blk. | Siphon | 1 |
| 51 | 22729 B | Screw | 1 |
| 51A | 51294 K | Clamp, upper | 1 |
| 52 | 22729 A | Screw | 1 |
| 53 | 52891 B | Crankshaft Bushing Housing, including bushing | 1 |
| 54 | 50-648 Blk. | Lucite Oil Gauge | 1 |
| 55 | 22571 A | Plug Screw | 18 |
| 56 | 666-114 | Oil Wick, for right main shaft bearing | 2 |
| 57 | 35178 D | Spring | 4 |
| 58 | 666-65 | Oil Wick, for looper rocker shaft | 2 |
| 59 | 666-118 | Oil Wick, for left main shaft bearing | 2 |
| 60 | 666-179 | Wedge Pin | 2 |
| 61 | 666-111 | Oil Wick, for feed rocker shaft | 2 |
| 62 | 22539 H | Plug Screw | 1 |
| 63 | 56390 E | Crankshaft Bearing Housing Gasket | 1 |
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Technical diagram of a mechanical assembly with numbered components and exploded view, likely for engineering or manufacturing documentation.CRANKSHAFT, NEEDLE LEVER AND LOOPER DRIVING PARTS
| Ref. No. | Part No. | Description | Amt. Req. |
| 1 | 56958 | Needle Lever Thread Eyelet, for Styles 52800 BC, BE, BM, BN, BW, BX---- | 1 |
| 2 | 56458 | Needle Lever Thread Eyelet, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY---- | 1 |
| 3 | 22768 | Screw---- | 1 |
| 4 | 52842 A | Needle Bar Finger Thread Eyelet Support---- | 1 |
| 5 | 73 A | Screw---- | 1 |
| 6 | 22743 | Screw---- | 1 |
| 7 | 41076 D | Thread Eyelet---- | 1 |
| 8 | Needle Bar Head (See Page 17)---- | 1 | |
| 9 | Needle Bar (See Page 17)---- | 1 | |
| 10 | 56958 A | Needle Bar Thread Eyelet, for Styles 52800 BC, BE, BM, BN, BW, BX---- | 1 |
| 11 | 56458 A | Needle Bar Thread Eyelet, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY---- | 1 |
| 12 | 27-435 Blk. | Washer---- | 1 |
| 13 | 22768 | Screw---- | 1 |
| 14 | 22586 R | Screw---- | 1 |
| 15 | 51250 F | Gasket---- | 1 |
| 16 | 51250 D | Washer---- | 1 |
| 17 | 660-212 | Oil Seal Ring---- | 2 |
| 18 | 56350 E | Needle Lever Thrust Collar---- | 1 |
| 19 | 56350 F | Compression Cup---- | 2 |
| 20 | 660-614 | Temper Load Ring---- | 1 |
| 21 | 29348 AF | Needle Lever Assembly---- | 1 |
| 22 | 52336 A | Link Pin---- | 2 |
| 23 | WO-3 | Columbia Yarn (6 strands)---- | - |
| 24 | 660-215 | Retaining Ring---- | 4 |
| 25 | 22564 | Screw---- | 1 |
| 26 | 51254 K | Needle Bar Connection---- | 1 |
| 27 | 22562 A | Screw---- | 1 |
| 28 | 56354 D | Needle Bar Link---- | 1 |
| 29 | 77 | Screw---- | 1 |
| 30 | 56315 A | Needle Lever---- | 1 |
| 31 | 56350 G | Needle Lever Bushing---- | 1 |
| 32 | 56350 D | Needle Lever Stud---- | 1 |
| *33 | 666-170 | Oil Wick---- | 1 |
| 34 | 29066 R | Needle Lever Connecting Rod and Upper Bearing Assembly---- | 1 |
| 35 | 22559 G | Screw---- | 2 |
| 36 | 51216 N | Washer---- | 1 |
| 37 | 51216 P | Nut---- | 1 |
| 38 | 51218 G | Needle Lever Connecting Rod---- | 2 |
| 39 | 29126 CR | Spreader Drive Eccentric Assembly---- | 1 |
| 40 | 95 | Screw---- | 2 |
| 41 | 52951 A | Connecting Rod Bearing---- | 1 |
| 42 | 660-244 | Needle Bearing---- | 1 |
| 43 | 52951 B | Retaining Washing---- | 1 |
| 44 | 660-246 | Tru-Arc Ring---- | 1 |
| 45 | 18 | Nut---- | 1 |
| 46 | HA20 A | Washer---- | 1 |
| 47 | 52952 B | Spreader Connecting Rod Ball Joint, upper---- | 1 |
| 48 | 22559 G | Screw---- | 2 |
| 49 | 52916 | Spreader Driving Eccentric Connecting Rod---- | 2 |
| 50 | 660-202 | Oil Seal Ring---- | 1 |
| 51 | 52921 B | Pulley---- | 1 |
| 52 | 22894 G | Screw---- | 2 |
| 53 | 22569 B | Screw---- | 3 |
| 54 | 52951 C | Spacing Washer---- | 1 |
| 55 | 22587 H | Screw---- | 2 |
| 56 | 52947 A | Counterweight---- | 1 |
| 57 | 29476 HL | Crankshaft Assembly, .910 inch throw---- | 1 |
| 58 | 51216 M | Needle Bearing Rollers---- | 28 |
| 59 | 51493 BP | Pump Driving Gear---- | 1 |
| 60 | 22560 B | Screw---- | 2 |
| 61 | 52943 L | Looper Drive Lever Crank and Crankshaft Connection---- | 1 |
| 62 | 22894 X | Screw---- | 4 |
| 63 | 56343 D | Looper Drive Lever Crank and Main Shaft Connection---- | 1 |
| 64 | 22894 X | Screw---- | 4 |
| 65 | 52942 A | Looper Drive Lever Rocker Shaft---- | 1 |
| 66 | 52951 C | Spacing Washer---- | 1 |
| 67 | 29476 LE | Looper Driving Lever Crank Assembly---- | 1 |
| 68 | 22559 A | Screw, lower---- | 2 |
| 69 | 51243 C | Ball Stud Guide---- | 1 |
| 70 | 22729 | Screw---- | 1 |
| 71 | 22587 | Screw, upper---- | 2 |
* Used with needle lever stud No. 51250 E, in old machines.
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Technical diagram of a mechanical assembly with numbered parts for identification and assembly reference.NEEDLE BARS AND SPREADER DRIVING MECHANISM
| Ref.No. | PartNo. | Description | Amt.Req. |
| 1 | 52849 | Spreader Rocker Shaft | 1 |
| 2 | 55235 D | Screw | 1 |
| 3 | 52849 B | Spreader Rocker Shaft Arm | 1 |
| 4 | 6042 A | Washer | 1 |
| 5 | 55235 E | Nut | 1 |
| 6 | 52848 C | Spreader Connecting Rod Ball Joint, rear | 1 |
| 7 | 269 | Nut, left thread | 1 |
| 8 | 51240 D | Spreader Connecting Rod | 1 |
| 9 | 18 | Nut, right thread | 1 |
| 10 | 52848 B | Spreader Connecting Rod Ball Joint, front | 1 |
| 11 | 12934 A | Nut | 1 |
| 12 | CL21 | Oil Wick | 1 |
| 13 | 15037 A | Nut | 1 |
| 14 | 51147 | Rocker Shaft Collar | 1 |
| 15 | 95 | Screw | 2 |
| 16 | 51292 C | Tension Nut | 1 |
| 17 | 51292 F-2 | Tension Spring | 1 |
| 18 | 109 | Tension Disc | 2 |
| 19 | 51292 | Tension Post | 1 |
| 20 | 51292 A | Tension Post Ferrule | 1 |
| 21 | 51292 D | Tension Thread Eyelet | 1 |
| 22 | 668-28 | Eyelet Locking Ring | 2 |
| 23 | 668-25 | Eyelet | 2 |
| 24 | 52855 A | Spreader Thread Pull-off Eyelet | 1 |
| 25 | 668-25 | Eyelet | 1 |
| 26 | 668-28 | Eyelet Locking Ring | 1 |
| 27 | 43266 | Nut | 1 |
| 28 | 22872 | Screw | 2 |
| 29 | 52849 C | Spreader Rocker Shaft Oil Seal Collar | 1 |
| 30 | 95 | Screw | 2 |
| 31 | 52855 G | Spreader Thread Pull-off Arm | 1 |
| 31A | 95 | Screw | 1 |
| 32 | 660-202 | Oil Ring | 1 |
| 33 | 52952 C | Spreader Thread Rock Shaft Lever | 1 |
| 34 | 55235 D | Screw | 1 |
| 35 | 6042 A | Washer | 1 |
| 36 | 55235 E | Nut | 1 |
| 37 | 52817 E-8 | Needle Bar, for No. 8 gauge, 2 needle, on Styles 52800 BA,BP, BR, BS, BT, BU, BV, BY | 1 |
| 52817 E-10 | Needle Bar, for No. 10 gauge, 2 needle, Style 52800 BT | 1 | |
| 52717 E-12 | Needle Bar, for No. 12 gauge, 2 needle, Style 52800 BD, BF,BT, BU, BV | 1 | |
| 52817-14 | Needle Bar, for No. 14 gauge, 3 needle, Style 52800 BW | 1 | |
| 38 | 52818-8 | Needle Bar Head, for No. 8 gauge, Styles 52800 BA, BP, BR,BS, BT, BU, BV, BY | 1 |
| 52818-8 | Needle Bar Head, for No. 10 gauge, Style 52800 BT | 1 | |
| 52818-8 | Needle Bar Head, for No. 12 gauge, Styles 52800 BD, BF, BT,BU, BV | 1 | |
| 52818-8 | Needle Bar Head, for No. 14 gauge, Style 52800 BW | 1 | |
| 39 | 89 | Screw, spot | 1 |
| 40 | 88 B | Screw, needle | 2 |
| 41 | 28 B | Screw, thread guide wire | 1 |
| 42 | 52842 G | Thread Guide Wire | 1 |
| 43 | 29264 S-16 | Needle Bar Assembly, for No. 16 gauge, 3 needle, Styles52800 BC, BE, BM, BN, BW, BX | 1 |
| 44 | 52817-16 | Needle Bar, for No. 16 gauge, 3 needle, Styles52800 BC, BE, BM, BN, BW, BX | 1 |
| 45 | 28 C | Screw, middle needle | 1 |
| 46 | 52818-8 | Needle Bar Head | 1 |
| 47 | 89 | Screw, spot | 1 |
| 48 | 88 B | Screw, needle | 2 |
| 49 | 52842 G | Thread Guide Wire | 1 |
| 50 | 28 B | Screw, thread guide wire | 1 |
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Technical diagram of a mechanical assembly with numbered parts, likely an engine or vehicle assembly.LOOPER ROCKER AND CONNECTING ROD PARTS
| Ref.No. | PartNo. | Description | Amt.Req. |
| 1 | 51244 L | Thrust Washer---- | 1 |
| 2 | 18 | Nut---- | 1 |
| 3 | 51216 N | Washer---- | 1 |
| 4 | 51244 N | Looper Rocker Shaft Collar---- | 1 |
| 5 | 55244 G | Looper Rocker Shaft Collar Stud---- | 1 |
| 6 | 52942 R | Looper Drive Lever Stud---- | 1 |
| 7 | 52942 P | Looper Drive Lever---- | 1 |
| 8 | 22882 A | Screw---- | 1 |
| 9 | 51242 M | Washer---- | 1 |
| 9A | 41355 U-4 | Shim, .004 inch thick---- (as required) | |
| 41355 U-5 | Shim, .005 inch thick---- (as required) | ||
| 41355 U-6 | Shim, .006 inch thick---- (as required) | ||
| 41355 U-7 | Shim, .007 inch thick---- (as required) | ||
| 41355 U-8 | Shim, .008 inch thick---- (as required) | ||
| 41355 U-9 | Shim, .009 inch thick---- (as required) | ||
| 10 | 20 | Washer---- | 1 |
| 11 | 18 | Nut---- | 1 |
| 12 | 29480 LY | Looper Connecting Rod Section and Ball Joint Assembly, right---- | 1 |
| 13 | 56341 G | Spring---- | 1 |
| 14 | 50-458 Blk. | Spring Pin---- | 1 |
| 15 | 18 | Nut, right thread---- | 1 |
| 16 | 57840 | Looper Connecting Rod---- | 1 |
| 17 | 269 | Nut, left thread---- | 1 |
| 18 | 52841 A | Looper Connecting Rod Ball Joint, left---- | 1 |
| 19 | 73 | Looper Set Screw---- | 1 |
| 20 | 29192 T | Looper Rocker Assembly---- | 1 |
| 21 | 22829 | Lock Nut Screw---- | 1 |
| 22 | 258 A | Lock Nut---- | 1 |
| 23 | 15465 F | Looper Rocker Cone---- | 1 |
| 24 | 88 | Set Screw---- | 2 |
| 25 | 52813 | Looper Rocker---- | 1 |
| 26 | 51745 | Looper Rocker Cone Stud---- | 1 |
| 27 | 52444 B | Looper Rocker Frame---- | 1 |
| 28 | 96 | Spot Screw---- | 1 |
| 29 | 51246 | Looper Rocker Stud Nut---- | 1 |
| 30 | 98 | Set Screw---- | 1 |
| 31 | 22768 | Screw---- | 1 |
| 32 | 51244 B | Thrust Rocker Shaft Arm---- | 1 |
| 33 | 22519 H | Screw---- | 1 |
| 34 | 18 | Nut---- | 1 |
| 35 | 51144 | Looper Rocker Shaft---- | 1 |
| 36 | 52708 BA | Looper, for all Styles except 52800 BF---- | 1 |
| K70991 | Looper, for Style 52800 BF---- | 1 | |
| 37 | 52825 C | Looper Needle Guard---- | 1 |
| 38 | 51244 L | Thrust Washer---- | 1 |
| 39 | 52825 D | Looper Needle Guard Holder---- | 1 |
| 40 | 33174 B | Screw---- | 2 |
| 41 | 22563 | Screw---- | 2 |
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Technical diagram of a mechanical assembly with numbered components and exploded view, including parts labeled 1–68.MAIN SHAFT, TAKE-UP AND DIFFERENTIAL FEED MECHANISM
| Ref.No. | PartNo. | Description | Amt.Req. |
| 1 | 269 | Nut, left thread | 1 |
| 2 | 20 | Washer | 1 |
| 3 | 51236 E | Feed Crank Link Assembly | 1 |
| 4 | 660-169 | Needle Bearing | 1 |
| 5 | 51236 D | Feed Crank Link | 1 |
| 6 | 51236 F | Feed Crank Link Ferrule | 1 |
| 7 | 51054 | Feed Crank Link Pin | 1 |
| 8 | 666-149 | Oil Wick | 1 |
| 9 | 51236 G | Feed Crank Stud | 1 |
| 10 | 82 | Stitch Regulating Screw | 1 |
| 11 | 51236 B | Feed Crank Stud Cap | 1 |
| 12 | 22768 | Screw | 2 |
| 13 | 52822 A | Main Shaft | 1 |
| 13A | 22801 | Screw, for take-up | 1 |
| 14 | 51236 A | Link Pin | 1 |
| 15 | 29476 DX | Feed Lift Eccentric Assembly | 1 |
| 16 | 51306 | Feed Lift Eccentric, .072 inch throw | 1 |
| 17 | 22894 D | Screw | 1 |
| 18 | 51145 A | Eccentric Bearing | 1 |
| 19 | 51236 A | Link Pin | 1 |
| 20 | 29476 DX | Looper Avoid Eccentric Assembly | 1 |
| 21 | 51306 | Looper Avoid Eccentric, .072 inch throw | 1 |
| 22 | 22894 D | Screw | 1 |
| 23 | 51145 A | Eccentric Bearing | 1 |
| 24 | 52923 D | Take-up | 1 |
| 25 | 22580 D | Screw | 2 |
| 26 | 90 | Screw | 1 |
| 27 | Differential Feed Dog (See Pages 27, 29) | 1 | |
| 28 | 52834 H | Differential Feed Bar | 1 |
| 29 | CL21 | Oil Wick | 1 |
| 30 | 22519 J | Screw | 1 |
| 30A | 51235 G | Washer | 1 |
| 31 | 52825 A | Rear Needle Guard, for 2 needle 12 gauge Styles 52800 BD, BF | 1 |
| 52825 E | Rear Needle Guard, for 3 needle 16 gauge Styles 52800 BC, BE | 1 | |
| 31A | 52825 B | Rear Needle Guard, for 2 needle 8 gauge Style 52800 BP, 2 needle 10 or 12 gauge Styles 52800 BT, BU, BV and 3 needle 14 or 16 gauge Styles 52800 BM, BN, BW, BX | 1 |
| 31B | 52825 F | Rear Needle Guard, for 2 needle 8 gauge Styles 52800 BA, BR, BS, BT, BU, BV, BY | 1 |
| 32 | 52925 D | Needle Guard Holder | 1 |
| 33 | 52853 | Feed Dog Holder, for all Styles except 52800 BC, BW | 1 |
| 33A | 52853 A | Feed Dog Holder, for Styles 52800 BC, BW | 1 |
| 34 | 22593 A | Screw | 2 |
| 35 | Main Feed Dog (See Pages 27, 29) | 1 | |
| 36 | 22593 | Screw | 4 |
| 37 | 39237 D | Differential Feed Bar Guide Plate | 2 |
| 38 | 52834 | Main Feed Bar | 1 |
| 39 | 22580 B | Screw | 1 |
| 40 | 39237 G | Bushing | 2 |
| 41 | 22747 | Feed Dog Height Adjusting Screw | 1 |
| 42 | 77 | Screw | 1 |
| 43 | 39237 | Differential Feed Bar Guide | 1 |
| 44 | 22565 C | Screw | 2 |
| 45 | 907 | Nut | 1 |
| 46 | 51225 W | Differential Feed Bar Regulating Stud Washer | 2 |
| 47 | 39236 V | Differential Feed Drive Link Bushing | 1 |
| 48 | 52835 T | Differential Feed Bar Driving Link | 1 |
| 49 | CL21 | Oil Wick | 1 |
| 50 | 39236 B | Differential Feed Regulating Stud | 1 |
| 51 | 77 | Screw | 1 |
| 52 | 482 | Collar | 2 |
| 53 | 98 | Screw | 2 |
| 54 | 52836 C | Feed Rocker Arm | 1 |
| 55 | 51235 G | Washer | 2 |
| 56 | 22519 C | Screw | 2 |
| 57 | 75 | Screw | 2 |
| 58 | 8 | Feed Rocker Shaft | 1 |
| 59 | 52834 N | Differential Feed Regulating Stud Nut | 1 |
| 60 | 39236 C | Regulating Stud Stop | 1 |
| 61 | 51225 W | Washer | 1 |
| 62 | 22516 | Screw | 1 |
| 63 | 52836 G | Feed Rocker Segment Plate | 1 |
| 64 | 52836 N | Feed Rocker Segment Slot Plate Shim | 1 |
| 65 | 52836 | Feed Rocker | 1 |
| 66 | 89 | Screw | 2 |
| 67 | 51134 C | Feed Bar Shaft | 1 |
| 68 | Wool Yarn | 1 |
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Technical diagram of a mechanical assembly with numbered components and exploded view, likely for engineering or manufacturing documentation.FOR STYLE 52800 BR ONLY
INTERMITTENT DIFFERENTIAL FEED MECHANISM
| Ref. No. | Part No. | Description | Amt. Req. |
| 1 | 22848 | Screw | 2 |
| 2 | 52835 N | Control Lever Stop Plate | 1 |
| 3 | 25 CC | Screw | 2 |
| 4 | 8372 A | Stop Washers | 2 |
| 5 | 43139 A | Index Stop | 2 |
| 6 | 9937 | Nut | 2 |
| 7 | 52835 | Differential Feed Control Lever | 1 |
| 8 | 51435 B | Control Lever Bushing | 1 |
| 9 | 52835 K | Control Lever Spring | 1 |
| 10 | 61267 G | Spring Pin | 1 |
| 11 | 77 | Screw | 1 |
| 12 | 482 | Collar | 2 |
| 13 | 98 | Screw | 2 |
| 14 | 52836 C | Feed Rocker Arm | 1 |
| 15 | 51235 G | Washer | 2 |
| 16 | 22519 C | Screw | 2 |
| 17 | 8 | Feed Rocker Shaft | 1 |
| 18 | 22516 | Screw | 3 |
| 19 | 52836 H | Feed Rocker Segment Plate | 1 |
| 20 | 57836 F-40 | Sliding Block, marked "N", .2540 inch wide | 1 |
| - | 57836 F-45 | Sliding Block, marked "P", .2545 inch wide | 1 |
| - | 57836 F-50 | Sliding Block, marked "R", .2550 inch wide | 1 |
| 21 | 52836 | Feed Rocker | 1 |
| 22 | 89 | Screw | 2 |
| 23 | 51134 C | Feed Bar Shaft | 1 |
| 24 | Wool Yarn | 1 | |
| 25 | 22593 | Screw | 2 |
| 26 | Main Feed Dog (See Pages 27, 29) | 1 | |
| 27 | 22593 A | Screw | 4 |
| 28 | 39237 D | Differential Feed Bar Guide Plate | 2 |
| 29 | 52834 | Main Feed Bar | 1 |
| 30 | 22560 B | Screw | 1 |
| 31 | 39237 G | Bushing | 2 |
| 32 | 22747 | Feed Dog Height Adjusting Screw | 1 |
| 33 | 907 | Nut | 1 |
| 34 | 52835 V | Differential Feed Bar Driving Link | 1 |
| 35 | CL21 | Oil Wick | 1 |
| 36 | 51225 W | Washer | 2 |
| 37 | 52835 S | Differential Feed Fork Block | 1 |
| 38 | 22868 A | Screw | 1 |
| 39 | 22758 B | Screw | 3 |
| 40 | 51435 | Feed Control Lever, rear | 1 |
| 41 | 719 | Screw | 1 |
| 42 | 52835 U | Pivot Stud Insert | 1 |
| 42A | 52835 G | Control Lever Link | 1 |
| 43 | 52835 Q | Differential Feed Fork | 1 |
| 44 | 12934 A | Nut | 2 |
| 45 | 39237 | Differential Feed Bar Guide | 1 |
| 46 | 22565 C | Screw | 2 |
| 47 | 77 | Screw | 1 |
| 48 | 52834 H | Differential Feed Bar | 1 |
| 49 | CL21 | Oil Wick | 1 |
| 50 | 52853 | Feed Dog Holder | 1 |
| 51 | 52925 D | Needle Guard Holder | 1 |
| 52 | 52825 F | Rear Needle Guard, for 2 needle 8 gauge Styles 52800 BA, BR, BS, BT, BU, BV, BY | 1 |
| 53 | 51235 G | Washer | 1 |
| 54 | 22519 J | Screw | 1 |
| 55 | Differential Feed Dog (See Pages 27, 29) | 1 | |
| 56 | 90 | Screw | 1 |
| 57 | 29476 DV | Feed Lift Eccentric Assembly | 1 |
| 58 | 51406 | Feed Lift Eccentric, .062 inch throw | 1 |
| 59 | 22894 D | Screw | 1 |
| 60 | 51145 A | Eccentric Bearing | 1 |
| 61 | 51236 A | Link Pin | 1 |
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Technical diagram of a sewing machine with numbered parts and exploded view, including labeled parts like springs, gears, and clamps.THREAD TENSION, LIFTER LEVER PARTS AND SPREADER HOLDING PARTS
| Ref. No. | Part No. | Description | Amt. Req. |
| 1 | 21657 W | Tension Release Lever Shaft | 1 |
| 2 | 21657 Y | Tension Release Lever Connection | 1 |
| 3 | 22596 | Screw | 1 |
| 4 | 402 | Screw | 1 |
| 5 | 51283 H | Presser Foot Lifter Lever | 1 |
| 6 | 660-207 | Oil Ring, for presser foot lifter lever | 1 |
| 6A | 39552 C | Washer | 1 |
| 7 | 53783 N | Presser Foot Lifter Lever, internal | 1 |
| 8 | 22537 | Screw | 1 |
| 9 | 56383 AB | Presser Foot Lifter Lever Connecting Rod | 1 |
| 10 | 52846 A | Spreader Holder | 1 |
| 11 | 88 | Screw | 2 |
| 12 | 77 A | Screw | 2 |
| 13 | 52945 M | Spreader | 1 |
| 14 | 52888 B | Presser Bar Stop Collar | 1 |
| 15 | 22562 | Screw | 2 |
| 16 | Presser Foot (See Pages 27, 29) | 1 | |
| 17 | 53688 | Presser Bar | 1 |
| 18 | 660-202 | Oil Ring | 1 |
| 18A | 52847 | Spreader Holder Carrier and Lower Presser Bar Bushing | 1 |
| 19 | 531 | Screw | 1 |
| 20 | 51257 M | Presser Bar Connection and Guide | 1 |
| 21 | 402 | Screw | 1 |
| 22 | 22557 B | Screw | 1 |
| 23 | 52883 S | Presser Foot Lifter Lever Bell Crank Spring | 1 |
| 24 | 22758 C | Screw | 1 |
| 25 | 53783 A | Lifter Lever Link | 1 |
| 26 | 53783 L | Presser Foot Lifter Lever Bell Crank | 1 |
| 27 | 51256 C | Presser Bar Spring | 1 |
| 28 | 52889 A | Presser Spring Regulator | 1 |
| 29 | 51292 C | Tension Nut, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU,BV, BY | 3 |
| 51292 C | Tension Nut, for Styles 52800 BC, BE, BM, BN, BW, BX | 4 | |
| 30 | 51292 F-1 | Tension Spring, looper | 1 |
| 31 | 51292 F-5 | Tension Spring, needle, for Styles 52800 BA, BP, BR, BT | 2 |
| 51292 F-5 | Tension Spring, needle, for Styles 52800 BC, BE, BM, BN, BW, BX- | 3 | |
| 51292 F-8 | Tension Spring, needle, for Styles 52800 BD, BF, BS, BU, BV, BY -- | 2 | |
| 32 | 109 | Tension Disc, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 6 |
| 109 | Tension Disc, for Styles 52800 BC, BE, BM, BN, BW, BX | 8 | |
| 33 | 51292 G | Tension Post, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 3 |
| 51292 G | Tension Post, for Styles 52800 BC, BE, BM, BN, BW, BX | 4 | |
| 34 | 51292 A | Tension Post Ferrule, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 3 |
| 51292 A | Tension Post Ferrule, for Styles 52800 BC, BE, BM, BN, BW, BX-- | 4 | |
| 35 | 51292 D | Tension Thread Eyelet, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 3 |
| 51292 D | Tension Thread Eyelet, for Styles 52800 BC, BE, BM, BN, BW, BX | 4 | |
| 36 | 668-28 | Locking Ring | 6-8 |
| 37 | 668-25 | Eyelet Insert | 6-8 |
| 38 | 51491 C | Thread Lead-in Guide, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 3 |
| 51491 C | Thread Lead-in Guide, for Styles 52800 BC, BE, BM, BN, BW, BX-- | 4 | |
| 39 | 43266 | Nut, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 1 |
| 43266 | Nut, for Styles 52800 BC, BE, BM, BN, BW, BX | 2 | |
| 40 | 52892 | Tension Post Support, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 1 |
| 41 | 21657-3 | Tension Dis Separator, for Styles 52800 BA, BD, BF, BP, BR, BS, BT, BU, BV, BY | 1 |
| 42 | 56382 X | Tension Post Support, for Styles 52800 BC, BE, BM, BN, BW, BX-- | 1 |
| 43 | 21657-4 | Tension Disc Separator, for Styles 52800 BC, BE, BM, BN, BW, BX | 1 |
FEED DOGS, THROAT PLATES, PRESSER FEET
| Ref.No. | PartNo. | Description | Amt.Req. |
| 1 | 57726 | Differential Feed, for Styles 52800 BA, BP, BR, BS, BU,BV, BY | 1 |
| 2 | 57705 A | Main Feed Dog, for Styles 52800 BA, BD, BP, BR, BS, BU, BV, BY | 1 |
| 3 | 57824 A-8 | Throat Plate, for No. 8 gauge, Styles 52800 BA, BP, BR, BS, BUBV, BY | 1 |
| 4 | 13120 F-8 | Presser Foot, for No. 8 gauge, Styles 52800 BA, BD, BP, BR, BS, BY | 1 |
| 5 | 13130 B | Presser Foot Shank | 1 |
| 6 | 91 | Screw | 1 |
| 7 | 73 A | Screw | 1 |
| 8 | 605 | Screw | 1 |
| 9 | 11534 | Spring | 1 |
| 10 | 13130 A | Yielding Section | 1 |
| 11 | 13130 F-8 | Presser Foot Bottom | 1 |
| 12 | 22799 B | Hinge Screw | 1 |
| 13 | 52820 H-8 | Presser Foot, for No. 8 gauge, Styles 52800 BU, BV | 1 |
| 14 | 13130 B | Presser Foot Shank | 1 |
| 15 | 91 | Screw | 1 |
| 16 | 73 A | Screw | 1 |
| 17 | 605 | Screw | 1 |
| 18 | 11534 | Spring | 1 |
| 19 | 52830 C | Yielding Section | 1 |
| 20 | 52830 D | Adjustable Guide | 1 |
| 21 | 22561 | Screw | 1 |
| 22 | 52830 H-8 | Presser Foot Bottom | 1 |
| 23 | 22799 B | Hinge Screw | 1 |
| 24 | 52824 F-12 | Throat Plate, for No. 12 gauge, Styles 52800 BU, BV | 1 |
| 52828 F-12 | Throat Plate, for No. 12 gauge 16 to 20 S.P.I., Style 52800 BD | 1 | |
| 25 | 52820 H-12 | Presser Foot, for No. 12 gauge, Styles 52800 BU, BV | 1 |
| 52820 M-12 | Presser Foot, for No. 12 gauge, Style 52800 BF | 1 | |
| 26 | 13130 B | Presser Foot Shank | 1 |
| 27 | 91 | Screw | 1 |
| 28 | 73 A | Screw | 1 |
| 29 | 605 | Screw | 1 |
| 30 | 11534 | Spring | 1 |
| 31 | 52830 C | Yielding Section, for No. 52820 H-12 | 1 |
| 52830 N | Yielding Section, for No. 52820 M-12 | 1 | |
| 32 | 52830 D | Adjustable Guide, for No. 52820 H-12 | 1 |
| 33 | 22561 | Screw, for No. 52820 H-12 | 1 |
| 34 | 52830 H-12 | Presser Foot Bottom, for No. 52820 H-12 | 1 |
| 52830 M-12 | Presser Foot Bottom, for No. 52820 M-12 | 1 | |
| 35 | 22799 B | Hinge Screw | 1 |
| 36 | 52826 K | Differential Feed Dog, for Style 52800 BW | 1 |
| 37 | 52805 K | Main Feed Dog, for Styles 52800 BC, BW | 1 |
| 38 | 52824 K-14 | Throat Plate, for No. 14 gauge, 9 to 12 S.P.I., Style 52800 BW | 1 |
| 52828 K-14 | Throat Plate, for No. 14 gauge, 13 to 16 S.P.I., Style 52800 BW | 1 | |
| 39 | 52820 K-14 | Presser Foot, for No. 14 gauge, Style 52800 BW | 1 |
| 40 | 13130 B | Presser Foot Shank | 1 |
| 41 | 91 | Screw | 1 |
| 42 | 73 A | Screw | 1 |
| 43 | 605 | Screw | 1 |
| 44 | 11534 | Spring | 1 |
| 45 | 13130 A | Yielding Section | 1 |
| 46 | 52830 K-14 | Presser Foot Bottom | 1 |
| 47 | 22799 B | Hinge Screw | 1 |
| 48 | 52824 K-16 | Throat Plate, for No. 16 gauge, 9 to 12 S.P.I., Style 52800 BW | 1 |
| 52828 K-16 | Throat Plate, for No. 16 gauge, 13 to 16 S.P.I., Style 52800 BW | 1 | |
| 52828 K-16 | Throat Plate, for No. 16 gauge, 16 to 20 S.P.I., Style 52800 BC | 1 | |
| 49 | 52820 K-16 | Presser Foot, for No. 16 gauge, Style 52800 BW | 1 |
| 50 | 13130 B | Presser Foot Shank | 1 |
| 51 | 91 | Screw | 1 |
| 52 | 73 A | Screw | 1 |
| 53 | 605 | Screw | 1 |
| 54 | 11534 | Spring | 1 |
| 55 | 13130 A | Yielding Section | 1 |
| 56 | 52830 K-16 | Presser Foot Bottom | 1 |
| 57 | 22799 B | Hinge Screw | 1 |
FEED DOGS, THROAT PLATES, PRESSER FEET
| Ref.No. | PartNo. | Description | Amt.Req. |
| 1 | 5126 B | Differential Feed Dog, for Style 52800 BM | 1 |
| 2 | 52805 B | Main Feed Dog, for Style 52800 BM | 1 |
| 3 | 52824 B-16 | Throat Plate, for No. 16 gauge, Style 52800 BM | 1 |
| 4 | 5127 C | Presser Foot, for Styles 52800 BE, BM | 1 |
| 5 | 91 | Screw | 1 |
| 6 | 605 | Screw | 1 |
| 7 | 5140 | Spring | 1 |
| 8 | 5141 | Yielding Section, left | 1 |
| 9 | 5041 | Yielding Section, right | 1 |
| 10 | 5141 A | Presser Foot Bottom | 1 |
| 11 | 3026 A | Differential Feed Dog, for Styles 52800 BE, BN | 1 |
| 12 | 52805 D-16 | Main Feed Dog, for Styles 52800 BE, BN | 1 |
| 13 | 52824 D-16 | Throat Plate, for No. 16 gauge, 12 to 15 S.P.I., Style 52800 BN | 1 |
| 52828 D-16 | Throat Plate, for No. 16 gauge, 16 to 18 S.P.I., Style 52800 BN | 1 | |
| 52828 D-16 | Throat Plate, for No. 16 gauge, 16 to 20 S.P.I., Style 52800 BE | 1 | |
| 14 | G52827-16 | Presser Foot, for Style 52800 BN | 1 |
| 15 | 605 | Screw | 1 |
| 16 | 79633 | Spring | 1 |
| 17 | 91 | Screw | 1 |
| 18 | G65-134 | Presser Foot Shank | 1 |
| 19 | G52827-1 | Presser Foot Bottom | 1 |
| 20 | 22716 A | Screw | 1 |
| 21 | G52897 A-16 | Stitch Tongue | 1 |
| 22 | G52827-2 | Yielding Section | 2 |
| 23 | 187 A | Screw, for Style 52800 BN | 1 |
| 24 | 23195 | Guide, for Style 52800 BN | 1 |
| 25 | 5126 | Differential Feed Dog, for No. 12 gauge, Styles 52800 BF, BT | 1 |
| 26 | 5105 B | Main Feed Dog, for No. 12 gauge, Style 52800 BT | 1 |
| 52805 M-12 | Main Feed Dog, for No. 12 gauge, Style 52800 BF | 1 | |
| 27 | 5024 B-12 | Throat Plate, for No. 12 gauge, Style 52800 BT | 1 |
| 52824 M-12 | Throat Plate, for No. 12 gauge, Style 52800 BF | 1 | |
| 28 | 52826 | Differential Feed Dog, for No. 10 gauge, Style 52800 BT | 1 |
| 29 | 13105 B | Main Feed Dog, for No. 10 gauge, Style 52800 BT | 1 |
| 30 | 13124 B-10 | Throat Plate, for No. 10 gauge, Style 52800 BT | 1 |
| 31 | 52826 G | Differential Feed Dog, for No. 8 gauge, Style 52800 BT | 1 |
| 32 | 5005 R | Main Feed Dog, for No. 8 gauge, Style 52800 BT | 1 |
| 33 | 5024 M-8 | Throat Plate for No. 8 gauge, Style 52800 BT | 1 |
| 34 | 52820 T-12 | Presser Foot, for Style 52800 BT | 1 |
| 35 | 52730 | Presser Foot Shank | 1 |
| 36 | 91 | Screw | 1 |
| 37 | 57 WD | Screw | 1 |
| 38 | 52830 G | Spring | 1 |
| 39 | 52730 A | Roller Guide, adjustable | 1 |
| 40 | 52730 C | Roller | 1 |
| 41 | 604 | Screw | 1 |
| 42 | 52730 X-578 | Hinge Pin | 2 |
| 43 | 52826 H | Differential Feed Dog, for Style 52800 BX | 1 |
| 44 | 52805 X-16 | Main Feed Dog, for Style 52800 BX | 1 |
| 45 | 52824 X-16 | Throat Plate, for No. 16 gauge, Style 52800 BX | 1 |
| 46 | 52820 X-16 | Presser Foot, for Style 52800 BX | 1 |
| 47 | 91 | Screw | 1 |
| 48 | 52830 X-16 | Presser Foot Bottom | 1 |
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Technical diagram of a sewing machine with numbered parts and exploded view, including labeled parts and assembly details.ATTACHMENTS
| Ref.No. | PartNo. | Description | AmtRec |
| 1 | 22848 | Screw | 4 |
| 2 | 57885 | Swing Cover Hinge, right | 1 |
| 3 | 52885 H | Swing Cover Hinge, left | 1 |
| 4 | 57764 B | Folder Support Hinged Bracket, for all Styles except 52800 BC, BD | 1 |
| 5 | 57895 A | Hinge Bracket Spring Pin | 1 |
| 6 | 22564 | Screw | 1 |
| 7 | 57864 | Clamp Plate, for Styles 528000 BA, BP, BR, BS, BW, BV, BW, BY | 1 |
| 7A | 52864 N | Folder Support Bracket, for Styles 52800 BA, BP, BR, BS, BU, BV, BW, BY | 1 |
| 8 | 53634 C | Washer, for Styles 52800 BA, BP, BR, BS, BU, BV, BW, BY | 2 |
| 8A | 23425 V | Washer Plate | 1 |
| 9 | T38 | Screw | 2 |
| 10 | 23432 | Folder Clamp, for Styles 52800 BA, BP, BR, BS, BU, BV, BW | 1 |
| 11 | 25 CC | Screw | 2 |
| 12 | 25 S | Screw | 1 |
| 13 | 93 | Screw | 1 |
| 14 | 21198 K | Measuring Gauge, for Styles 52800 BA, BP, BR | 1 |
| 15 | 21198 L | Brace | 1 |
| 16 | 21198 J | Lock Nut | 2 |
| 17 | 94 | Screw | 1 |
| 18 | 21198 F | Base | 1 |
| 19 | 21198 G | Slide Gauge, front | 1 |
| 20 | 21198 H | Slide Gauge, rear | 1 |
| 21 | 22756 | Thumb Screw | 2 |
| 22 | 25 S | Screw | 2 |
| 23 | 21657 E | Washer | 2 |
| 24 | 23439 G | Strip Tension, for Styles 52800 BR, BS, BU, BV, BW, BY | 1 |
| 25 | 23439 F | Adjustable Pin | 2 |
| 26 | 188 D | Screw | 2 |
| 26A | 51-561 Blk. | Guide | 1 |
| 26B | 907 | Nut | 2 |
| 27 | 22548 | Screw | 2 |
| 28 | 21182 AA | Strip Tension, for Styles 52800 BA, BP | 1 |
| 29 | 23439 E | Adjustable Pin | 1 |
| 30 | 21182 AE | Adjustable Strip Guide | 1 |
| 31 | 22561 | Screw | 1 |
| 32 | 188 D | Screw | 1 |
| 33 | 21182 AB | Base | 1 |
| 34 | 21182 AF | Tension Plate | 1 |
| 35 | 21182 AD | Operating Arm | 1 |
| 36 | 22845 A | Shoulder Screw | 1 |
| 37 | 1349 | Spring | 1 |
| 38 | 21185 | Nut | 2 |
| 39 | 22760 | Screw | 1 |
| 40 | 22504 B | Pivot Stud | 1 |
| 41 | 21182 AC | Operating Lever | 1 |
| 42 | 402 | Screw Pin | 2 |
| 43 | 11663 | Spring | 1 |
| 44 | Folder (See Chart Below) | 1 | |
| 45 | Folder (See Chart Below) | 1 | |
| 46 | Folder (See Chart Below) | 1 | |
| 47 | Folder (See Chart Below) | 1 |
TABLE OF FOLDERS
| Ref. No. | Part No. | Machine Style Used On | Seam Type | Strip Size | Finish Size | Strip Capacity | Uncurlers | Amt. Req. | |
| 44 | 23406 L-7/16 | BP-8 7/16 | BR-8 7/16 | BSa-1 | 7/8" | 7/16" | .025" | †Ent. & Del. | 1 |
| 23406 L-1/2 | BP-8 1/2 | BR-8 1/2 | BSa-1 | 1" | 1/2" | .025" | †Ent. & Del. | 1 | |
| 23406 L-5/8 | BP-8 5/8 | BR-8 5/8 | BSa-1 | 1-1/4" | 5/8" | .025" | †Ent. & Del. | 1 | |
| 23406 L-3/4 | BP-8 3/4 | BR-8 3/4 | BSa-1 | 1-1/2" | 3/4" | .025" | †Ent. & Del. | 1 | |
| 45 | 23406 R-1/2 | BV-8 1/2 | BV-12 1/2 | BSb-1 | 1-1/4" | 1/2" top* | 3/64" | †Ent. & Del. | 1 |
| 23406 R-5/8 | BV-8 5/8 | BV-12 5/8 | BSb-1 | 1-1/2" | 5/8" top* | 3/64" | Entrance | 1 | |
| 23406 U-3/4 | BV-8 3/4 | BV-12 3/4 | BSb-1 | 1-3/4" | 3/4" top* | 3/64" | None | 1 | |
| 23406 S-3/4 | BV-12 3/4 | BSb-1 | 1-13/16" | 3/4" top* | 5/64" | None | 1 | ||
| K59055 | BV-8 7/8 | BV-12 7/8 | BSb-1 | 2-1/8" | 7/8" top* | 3/64" | Entrance | 1 | |
| K63210 | BV-8 7/8 | BV-12 7/8 | BSb-1 | 2" | 7/8" top* | 5/64" | None | 1 | |
| K64049 | BV-8-1 | BV-12-1 | BSb-1 | 2-1/4" | 1" top* | 3/64" | †Ent. & Del. | 1 | |
| 23406 T-1 | BV-8-1 | BV-12-1 | BSb-1 | 2-1/4" | 1" top* | 5/64" | None | 1 | |
| K64050 | BV-8-1 1/4 | BV-12-1 1/4 | BSb-1 | 2-3/4" | 1-1/4" top* | 5/64" | None | 1 | |
| 46 | 23406 M-1/2 | BS-8 1/2 | BA-8 1/2 | BSa-1 | 1" | 1/2" | 3/64" | Entrance | 1 |
| 23406 M-5/8 | BS-8 5/8 | BSa-1 | 1-1/4" | 5/8" | 3/64" | Entrance | 1 | ||
| 23406 M-3/4 | BS-8 3/4 | BSa-1 | 1-1/2" | 3/4" | 3/64" | Entrance | 1 | ||
| 23406 M-7/8 | BS-8 7/8 | BSa-1 | 1-3/4" | 7/8" | 3/64" | Entrance | 1 | ||
| 23406 M-1 | BS-8-1 | BSa-1 | 2" | 1" | 3/64" | Entrance | 1 | ||
| 47 | 23406 N-3/4 | BU-8 3/4 | BW-14 3/4 | BSa-1 | 1-1/2" | 3/4" | 5/64" | None | 1 |
| BU-12 3/4 | BW-16 3/4 | ||||||||
| 23406 N-7/8 | BU-8 7/8 | BW-14 7/8 | BSa-1 | 1-3/4" | 7/8" | 5/64" | None | 1 | |
| BU-12 7/8 | BW-16 7/8 | ||||||||
| 23406 N-1 | BU-8-1 | BW-14-1 | BSa-1 | 2" | 1" | 5/64" | None | 1 | |
| BU-12-1 | BW-16-1 | ||||||||
| 23406 N-1 1/4 | BU-8-1 1/4 | BW-14-1 1/4 | BSa-1 | 2-1/2" | 1-1/4" | 5/64" | None | 1 | |
| BU-12-1 1/4 | BW-16-1 1/4 | ||||||||
* Above folders, producing seam Type BSb-1, finish 1/16" wider on top than on bottom with 1/16" margin to left of left hand needle.
† Entrance and delivery ends.
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Technical diagram of a mechanical device with numbered components and labeled parts, including assembly steps and component labels.THREAD STAND PARTS
| Ref. No. | Part No. | Description | Amt. Req. |
| 1 | 21101 H-4 | Thread Stand Assembly, for Styles 52800 BA, BD,BF, BP, BR, BS, BT, BU, BV, BY | 1 |
| 2 | 21114 A | Thread Stand Base | 1 |
| 3 | 22651 CD-4 | Screw | 1 |
| 4 | 22810 | Screw | 1 |
| 5 | 21114 T | Lead Eyelet Socket Ball | 1 |
| 6 | 22651 CD-4 | Screw | 2 |
| 7 | 21114 U | Lead Eyelet Ball Split Socket | 2 |
| 8 | 652-16 | Washer | 1 |
| 9 | 21104 H | Nut | 1 |
| 10 | 21114 S-4 | Lead Eyelet | 1 |
| 11 | 21114 L | Eyelet | 4 |
| 12 | 21114 M | Eyelet Locking Ring | 4 |
| 13 | 21114 D-4 | Spool Seat Support | 1 |
| 14 | 22651 CD-5 | Screw | 2 |
| 15 | 21104 B-24 | Thread Stand Rod | 1 |
| 16 | 21114 H-4 | Eyelet Support | 1 |
| 17 | 21114 L | Eyelet | 8 |
| 18 | 21114 M | Eyelet Locking Ring | 8 |
| 19 | 22651 CD-4 | Screw | 2 |
| 20 | 258 A | Nut | 8 |
| 21 | 652-16 | Washer | 4 |
| 22 | 21114 | Spool Seat Disc | 4 |
| 23 | 21114 W | Spool Pin | 4 |
| 24 | 21104 V | Felt Pad | 4 |
| 25 | 21101 H-6 | Thread Stand Assembly, for Styles 52800 BC, BE,BM, BN, BW, BX | 1 |
| 26 | 21114 A | Thread Stand Base | 1 |
| 27 | 22651 CD-3 | Screw | 1 |
| 28 | 22810 | Screw | 1 |
| 29 | 21114 T | Lead Eyelet Socket Ball | 1 |
| 30 | 22651 CD-4 | Screw | 2 |
| 31 | 21114 U | Lead Eyelet Ball Split Socket | 2 |
| 32 | 652-16 | Washer | 1 |
| 33 | 21104 H | Nut | 1 |
| 34 | 21114 S-6 | Lead Eyelet | 1 |
| 35 | 21114 L | Eyelet | 6 |
| 36 | 21114 M | Eyelet Locking Ring | 6 |
| 37 | 21114 D-6 | Spool Seat Support | 1 |
| 38 | 22651 CD-5 | Screw | 2 |
| 39 | 21104 B-24 | Thread Stand Rod | 1 |
| 40 | 21114 H-6 | Eyelet Support | 1 |
| 41 | 21114 L | Eyelet | 12 |
| 42 | 21114 M | Eyelet Locking Ring | 12 |
| 43 | 22651 CD-4 | Screw | 2 |
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Technical diagram of a mechanical device with numbered parts, including clamping, bracket, and hanging stand components.STRIP TENSION PARTS, STRIP HOLDING PARTS AND ACCESSORIES
| Ref.No. | PartNo. | Description | Amt.Req. |
| 1 | 23306 Q | Strip Guide, for Style 52800 BT | 1 |
| 23306 A | Strip Guide, for Styles 52800 BC, BD, BE, BF | 1 | |
| 2 | 23306 AA | Strip Guide Support, for Styles 52800 BC, BD, BE, BF,BT | 1 |
| 3 | 22568 | Screw | 1 |
| 4 | 22504 C | Screw, for Styles 52800 BC, BD, BE, BF, BT | 1 |
| 5 | 22837 | Thumbscrew, for Styles 52800 BC, BD, BE, BF, BT | 1 |
| 6 | 12957 E | Washer, for Styles 52800 BC, BD, BE, BF, BT | 1 |
| 7 | 52882 V | Stud, for Styles 52800 BC, BD, BE, BF, BT | 2 |
| 8 | 94 | Screw, for Styles 52800 BC, BD, BE, BF, BT | 2 |
| 9 | 23306 Z | Strip Guide and Tension Assembly, for Style 52800 BT | 1 |
| 23306 AE | Strip Guide and Tension Assembly, for Styles 52800 BC,BD, BE, BF | 1 | |
| 10 | 23306 AF | Tension Adjusting Lock Nut | 1 |
| 11 | 22703 | Tension Thumbscrew | 1 |
| 12 | 23306 T | Adjustable Strip Guide, for No. 23306 Z | 1 |
| 23306 W | Adjustable Strip Guide, for No. 23306 AE | 1 | |
| 13 | 25 B | Screw | 1 |
| 14 | 21169 E | Binding Holder Disc, for Styles 52800 BA, BP, BR,BS, BU, BV, BW, BY | 1 |
| 15 | 161 | Binding Holder Stop Collar, for Styles 52800 BA, BP,BR, BS, BU, BV, BW, BY | 1 |
| 16 | 88 | Screw | 1 |
| 17 | 21169 F | Binding Holder Base, for Styles 52800 BA, BP, BR,BS, BU, BV, BW, BY | 1 |
| 18 | SC303 | Wood Screw #12-1" long | 2 |
| 19 | 188 D | Screw, for Styles 52800 BC, BD, BE, BF, BT | 3 |
| 20 | 21216 | Spool Support Upright Rod, for Styles 52800 BC, BD,BE, BF, BT | 2 |
| 21 | 21217 A | Pin Support, for Style 52800 BT | 2 |
| 22 | 22651 CD-4 | Screw | 2 |
| 23 | 22650 CB-4 | Screw | 2 |
| 24 | 751 A | Pin, for Style 52800 BT | 2 |
| 25 | 753 | Axie Cone, for Styles 52800 BC, BD, BE, BF, BT | 1 |
| 26 | 21102 B | Guide Holder Supporting Rod, for Styles 52800 BC, BD,BE, BF, BT | 1 |
| 27 | 752 | Axle, for Style 52800 BT | 1 |
| 28 | 21114 A | Spool Support Base, for Styles 52800 BC, BD, BE, BF,BT | 2 |
| 29 | 22651 CD-4 | Screw | 1 |
| 30 | 421 D-38 | Treadle Chain, 38 inches long, for Styles 52800 BA,BP, BR | 1 |
| 31 | 421 D-28 | Treadle Chain, 28 inches long | 1 |
| 32 | 29402 | Lifter Treadle Assembly, for Styles 52800 BA, BP, BR | 1 |
| 33 | 423 | Lifter Treadle Rest | 1 |
| 34 | 424 | Lifter Treadle Pin | 1 |
| 36 | 22813 | Screw | 1 |
| 37 | 21201 | Screwdriver, 9/64 inch round blade, length over all7 5/8 inches | 1 |
| 38 | 660-240 | Thread Tweezer | 1 |
| 39 | 21388 | Wrench, single end, 3/8 inch opening | 1 |
| 40 | 51493 BC | Lifter Link | 1 |
| 41 | 23279 D | Folder Threader, for Styles 52800 BA, BC, BD, BF,BP, BR, BS, BU, BV, BW, BX, BY | 1 |
| 42 | 21388 W | Wrench, double end, curved, 9/32 inch opening | 1 |
NUMERICAL INDEX OF PARTS
| Part No. | Page No. | Part No. | Page No. | Part No. | Page No. | Part No. | Page No. |
| WO-3 | 15 | 660-240 | 35 | 21169 E | 35 | 22711 | 9 |
| 8 | 21,23 | 660-244 | 15 | 21169 F | 35 | 22716 A | 29 |
| 18 | 15,17,19 | 660-246 | 15 | 21182 AA | 31 | 22729 | 15 |
| 20 | 9,19,21 | 660-614 | 15 | 21182 AB | 31 | 22729 A | 13 |
| HA20 A | 15 | 666-65 | 13 | 21182 AC | 31 | 22729 B | 13 |
| CL21 | 17,21,23 | 666-99 | 13 | 21182 AD | 31 | 22733 B | 11 |
| 25 B | 35 | 666-111 | 13 | 21182 AE | 31 | 22735 | 11 |
| 25 C | 11 | 666-114 | 13 | 21182 AF | 31 | 22743 | 15 |
| 25 S | 31 | 666-118 | 13 | 21185 | 31 | 22747 | 21,23 |
| 25 CC | 23,31 | 666-149 | 21 | 21198 F | 31 | 22756 | 31 |
| 27-435 Blk | 15 | 666-170 | 15 | 21198 G | 31 | 22758 B | 23 |
| 28 B | 17 | 666-179 | 13 | 21198 H | 31 | 22758 C | 25 |
| 28 C | 17 | 666-201 | 13 | 21198 J | 31 | 22760 | 31 |
| T38 | 31 | 666-209 | 13 | 21198 K | 31 | 22768 | 9,15,19,21 |
| 50-216 Blk | 9 | 666-214 | 13 | 21198 L | 31 | ||
| 50-458 Blk | 19 | 668-25 | 17,25 | 21201 | 35 | 22729 B | 27 |
| 50-648 Blk | 9,13 | 668-28 | 17,25 | 21212 | 13 | 22799 M | 9 |
| 50-789 Blk | 9 | 719 | 9,23 | 21216 | 35 | 22801 | 21 |
| 51-561 Blk | 31 | 751 A | 35 | 21217 A | 35 | 22810 | 33 |
| 52 A | 9 | 752 | 35 | BB21375 AH | 9 | 22813 | 35 |
| 67 WD | 29 | 753 | 35 | 21388 | 35 | 22823 A | 13 |
| G65-134 | 29 | 907 | 21,23,31 | 21388 W | 35 | 22823 B | 13 |
| 73 | 19 | 1349 | 31 | 21657 | 25 | 22829 | 19 |
| 73 A | 9,15,27 | 3026 A | 29 | 21657 E | 9,31 | 22837 | 35 |
| 75 | 21 | 5003 | 11 | 21657 W | 25 | 22839 | 11 |
| 77 | 15,21,23 | 5005 R | 29 | 21657 X | 13 | 22839 C | 11 |
| 77 A | 25 | 5024 B | 29 | 21657 Y | 25 | 22845 A | 31 |
| 80 | 11 | 5024 M | 29 | 22504 B | 31 | 22848 | 9,11,23,31 |
| 82 | 21 | 5041 | 29 | 22504 C | 35 | ||
| 87 | 11 | 5105 B | 29 | 22513 | 9 | 22868 A | 23 |
| 87 U | 9 | 5126 | 29 | 22516 | 9,21,23 | 22872 | 17 |
| 88 | 19,25,35 | 5126 B | 29 | 22517 C | 9 | 22882 A | 19 |
| 88 B | 17 | 5127 C | 29 | 22519 C | 21,23 | 22889 A | 9 |
| 89 | 17,21,23 | 5127 B | 29 | 22519 H | 19 | 22894 D | 21,23 |
| 90 | 9,11,13,21,23 | 5140 | 29 | 22519 J | 21,23 | 22894 G | 15 |
| 5141 | 29 | 22524 | 11 | 22894 X | 15 | ||
| 91 | 27,29 | 5141 A | 29 | 22528 | 9 | 23133 L | 11 |
| 93 | 9,31 | 6042 A | 17 | 22537 | 25 | 23133 M | 11 |
| 93 A | 11 | 8372 A | 23 | 22539 D | 9 | 23195 | 29 |
| 94 | 31,35 | 9937 | 23 | 22539 H | 13 | 23279 D | 35 |
| 95 | 15,17 | 10303 A | 11 | 22541 B | 9 | 23306 A | 35 |
| 96 | 19 | 11534 | 27 | 22542 | 9 | 23306 Q | 35 |
| 98 | 3,19,21 | 11663 | 31 | 22548 | 11,31 | 23306 T | 35 |
| 98 A | 9 | 12934 A | 17,23 | 22557 B | 25 | 23306 W | 35 |
| 109 | 17,25 | 12957 E | 11,35 | 22559 A | 15 | 23306 Z | 35 |
| 161 | 35 | 13105 B | 29 | 22559 G | 15 | 23306 AA | 35 |
| 187 A | 29 | 13120 F | 27 | 22560 B | 13,15,21,23 | 23306 AE | 35 |
| 188 D | 31,35 | 13124 B | 29 | 23 | 23306 AF | 35 | |
| 258 A | 13,19,33 | 13130 A | 27 | 22561 | 11,27,31 | 23406 L | 31 |
| 269 | 17,19,21 | 13130 B | 27 | 22562 | 25 | 23406 N | 31 |
| 294 | 9,13 | 13130 F | 27 | 22562 A | 15 | 23406 N | 31 |
| SC303 | 35 | 15037 A | 17 | 22563 | 19 | 23406 R | 31 |
| 357 | 11 | 15438 B | 9 | 22564 | 15,31 | 23406 S | 31 |
| 402 | 25,31 | 15438 C | 9 | 22565 C | 21,23 | 23406 T | 31 |
| 421 D | 35 | 15438 D | 9 | 22568 | 35 | 23406 U | 31 |
| 423 | 35 | 15465 F | 19 | 22569 B | 13,15 | 23425 V | 11,31 |
| 424 | 35 | 21101 H | 33 | 22571 A | 13 | 23432 | 31 |
| 482 | 21,23 | 21102 B | 35 | 22572 A | 9 | 23439 F | 31 |
| 531 | 13,25 | 21104 B | 33 | 22580 D | 21 | 23439 G | 31 |
| 539 | 9 | 21104 E | 33 | 22585 A | 11 | 29066 R | 15 |
| 604 | 29 | 21114 | 33 | 22586 R | 15 | 29126 CR | 15 |
| 605 | 27,29 | 21114 A | 33,35 | 22587 | 15 | 29192 T | 19 |
| 643-127 Blk | 13 | 21114 D | 33 | 22587 H | 15 | 29264 S-16 | 17 |
| 643-263 Blk | 13 | 21114 E | 33 | 22593 A | 21,23 | 29348 AF | 15 |
| 652-16 | 33 | 21114 L | 33 | 22596 | 25 | 29402 | 35 |
| 660-136 | 13 | 21114 M | 33 | 22597 | 9 | 29476 DV | 23 |
| 660-169 | 21 | 21114 S | 33 | 22645 H-64 | 13 | 29476 DX | 21 |
| 660-202 | 15,17,25 | 21114 T | 33 | 22650 CB-4 | 35 | 29476 HL | 15 |
| 660-207 | 25 | 21114 U | 33 | 22651 CD | 33,35 | 29476 LE | 15 |
| 660-212 | 15 | 21114 V | 33 | 22703 | 35 | 29480 LY | 19 |
| 660-215 | 15 | 21114 W | 33 | 22706 A | 13 | 33174 B | 19 |
NOTE: Only the basic part numbers are shown in the index. For various gauges, capacities, etc. available, refer to the listings on pages indicated.
NUMERICAL INDEX OF PARTS
| Part No. | Page No. | Part No. | Page No. | Part No. | Page No. | Part No. | Page No. |
| 35178 | D....13 | 51493 | E....13 | 52834 | R....21,23 | 52942 | A....15 |
| 35582 | B....9 | 51493 | AG....13 | 52834 | N....21 | 52942 | P....19 |
| 35731 | A....9 | 51493 | AH....13 | 52835 | ....23 | 52942 | R....19 |
| 35772 | D....11 | 51493 | AZ....13 | 52835 | G....23 | 52942 | W....13 |
| 39236 | B....21 | 51493 | BC....35 | 52835 | K....23 | 52942 | Y....9 |
| 39236 | C....21 | 51493 | BG....13 | 52835 | N....23 | 52943 | L....15 |
| 39236 | V....21 | 51493 | BH....13 | 52835 | Q....23 | 52944 | T....13 |
| 39237 | ....21,23 | 51493 | BJ....13 | 52835 | S....23 | 52944 | U....13 |
| 39237 | D....21,23 | 51493 | BK....13 | 52835 | T....21 | 52945 | M....25 |
| 39237 | G....21,23 | 51493 | BP....15 | 52835 | U....23 | 52947 | A....15 |
| 39552 | C....25 | 51493 | EQ....13 | 52835 | V....23 | 52951 | A....15 |
| 39582 | L....9 | 51745 | ....19 | 52836 | ....21,23 | 52951 | B....15 |
| 39595 | ....13 | 52336 | A....15 | 52836 | C....21,23 | 52951 | C....15 |
| 41076 | D....15 | 52444 | B....19 | 52836 | G....21 | 52952 | B....15 |
| 41355 | U....19 | 52708 | BA....19 | 52836 | H....23 | 52952 | C....17 |
| 41394 | A....11 | 52717 | E....17 | 52836 | N....21 | 52957 | C....9 |
| 43139 | A....23 | 52730 | ....29 | 52841 | A....19 | 52958 | B....9 |
| 43266 | ....17,25 | 52730 | A....29 | 52842 | A....15 | 52958 | D....9 |
| 43281 | K....11 | 52730 | C....29 | 52842 | G....17 | 52978 | V....11 |
| 51054 | ....21 | 52730 | X....29 | 52844 | A....9 | 52982 | D....11 |
| 51134 | C....21,23 | 52794 | G....13 | 52846 | A....25 | 52982 | E....11 |
| 51144 | ....19 | 52801 | C....11 | 52847 | ....25 | 52982 | F....11 |
| 51145 | A....21,23 | 52802 | C....11 | 52848 | B....17 | 52985 | ....9 |
| 51147 | ....17 | 52802 | D....11 | 52848 | C....17 | 52985 | A....9 |
| 51154 | D....13 | 52804 | E....9 | 52849 | ....17 | 52994 | U....13 |
| 51216 | G....15 | 52805 | B....29 | 52849 | B....17 | 52994 | V....13 |
| 51216 | M....15 | 52805 | D....29 | 52849 | C....17 | 53634 | C....31 |
| 51216 | N....15,19 | 52805 | K....27 | 52853 | ....21,23 | 53688 | ....25 |
| 51216 | P....15 | 52805 | M....29 | 52853 | A....17 | 53783 | A....25 |
| 51225 | W....21,23 | 52805 | X....29 | 52855 | A....17 | 53783 | L....25 |
| 51235 | G....21,23 | 52813 | ....19 | 52855 | G....17 | 53783 | N....25 |
| 51236 | A....21,23 | 52817 | ....17 | 52858 | ....9 | 55235 | D....17 |
| 51236 | B....21 | 52817 | E....17 | 52864 | N....31 | 55235 | E....17 |
| 51236 | D....21 | 52818 | ....17 | 52864 | R....11 | 55244 | G....19 |
| 51236 | E....21 | 52820 | H....27 | 52864 | T....11 | 56315 | A....15 |
| 51236 | F....21 | 52820 | K....27 | 52864 | U....11 | 56341 | G....19 |
| 51236 | G....21 | 52820 | M....27 | 52880 | ....11 | 56343 | D....15 |
| 51240 | D....17 | 52820 | T....29 | 52882 | P....9 | 56350 | D....15 |
| 51242 | M....19 | 52820 | X....29 | 52882 | R....9 | 56350 | E....15 |
| 51243 | C....15 | 52822 | A....21 | 52882 | S....9 | 56350 | F....15 |
| 51244 | B....19 | 52824 | B....29 | 52882 | U....11 | 56350 | G....15 |
| 51244 | L....19 | 52824 | D....29 | 52882 | V....35 | 56354 | D....15 |
| 51244 | N....19 | 52824 | F....27 | 52882 | W....9 | 56382 | X....25 |
| 51246 | ....19 | 52824 | K....27 | 52882 | Z....9 | 56382 | AC....9 |
| 51250 | D....15 | 52824 | M....29 | 52882 | AA....9 | 56383 | AB....25 |
| 51250 | F....15 | 52824 | X....29 | 52882 | AC....9 | 56390 | E....13 |
| 51254 | C....13 | 52825 | A....21 | 52882 | AD....9 | 56458 | ....15 |
| 51254 | K....15 | 52825 | B....21,23 | 52882 | AF....11 | 56458 | A....15 |
| 51256 | C....25 | 52825 | C....19 | 52883 | R....13 | 56958 | ....15 |
| 51257 | M....25 | 52825 | D....19 | 52883 | S....25 | 56958 | A....15 |
| 51280 | J....11 | 52825 | E....21 | 52885 | B....25 | 57705 | A....27 |
| 51283 | H....25 | 52825 | F....21,23 | 52885 | E....31 | 57726 | ....27 |
| 51290 | T....13 | 52826 | ....29 | 52885 | L....9 | 57764 | A....11 |
| 51291 | A....9 | 52826 | G....29 | 52889 | A....25 | 57764 | B....31 |
| 51292 | ....17 | 52826 | H....29 | 52890 | C....13 | 57824 | A....27 |
| 51292 | A....17,25 | 52826 | K....27 | 52891 | B....13 | 57836 | F....23 |
| 51292 | C....17,25 | G52827-1....29 | 52892 | ....25 | 57840 | ....19 | |
| 51292 | D....17,25 | G52827-2....29 | 52894 | K....13 | 57842 | B....13 | |
| 51292 | F....17,25 | G52827-16....29 | 52894 | AB....13 | 57864 | ....31 | |
| 51292 | G....25 | 52828 | D....29 | 52894 | AD....13 | 57885 | ....9,31 |
| 51294 | K....13 | 52828 | F....27 | 52894 | AE....13 | 57885 | A....31 |
| 51294 | U....13 | 52828 | K....27 | 52894 | AK....13 | 57885 | B....9 |
| 51294 | Y....13 | 52830 | C....27 | G52897 | A-16....29 | K59055 | ....31 |
| 51295 | B....13 | 52830 | D....27 | 52904 | B....9 | 61267 | G....23 |
| 51306 | ....21 | 52830 | G....29 | 52904 | E....9 | K63210 | ....31 |
| 51382 | A....11 | 52830 | H....27 | 52904 | G....9 | K64049 | ....31 |
| 51406 | ....23 | 52830 | K....27 | 52916 | ....15 | K64050 | ....31 |
| 51435 | ....23 | 52830 | M....27 | 52921 | B....15 | K70991 | ....19 |
| 51435 | B....23 | 52830 | N....27 | 52923 | D....21 | ||
| 51491 | C....25 | 52830 | X....29 | 52925 | D....21,23 | ||
| 51493 | D....13 | 52834....21,23 | 52936....13 | ||||
NOTE: Only the basic part numbers are shown in the index. For various gauges, capacities, etc. available, refer to the listings on pages indicated.
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.
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MACHINE MAINTENANCE RECORD MAKES NAME STYLE TYPE NEEDLE MANUAL NO. DATE/PLUGN. DATE SYMBOL PART USED COST DATE SYMBOL PART USED COST FORM 237- Machine Maintenance Record cardThe 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 permanent "Machine Repair Record" kept in the office.
Whichever system is used, management now has an invaluable tool 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.
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MACHINE REPAIR RECORD CARD MAKERS NAME MARKERS DATE RECEI & NO. LABOR CART PARTS ORDER TOTAL ORDER PARTS USED ITEMS POST NUMBER CART FORM 233- Machine Repair Record card FORM 234- Repair Request Card THIS QUARTED. THIS COPLETED. RECHARGE & NO. REV. DATE: 01/01/2017.01.01.01.01.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.
U Union Special®
Style 52800 BN-16
Suggested Minimum Spare Parts List*
| Part Number | Description | Minimum Quantity Per 5 Machines | Part Number | Description | Minimum Quantity Per 5 Machines |
| G 52827-16 | Presser foot | 1 | 88 B | Needle clamp screw | 4 |
| 91 | Presser foot clamp screw | 2 | 28 C | Needle clamp screw | 2 |
| 52805 D-16 | Main feed dog | 1 | 41076 D | Spreader thread eyelet | 2 |
| 22593 | Main feed dog screw | 4 | 73 A | Spreader thread eyelet screw | 4 |
| 3026 A | Differential feed dog | 1 | 22743 | Spreader thread eyelet holder screw | 4 |
| 90 | Differential feed dog screw | 2 | 52945 M | Spreader | 2 |
| 52824 D-16 or | Throat plate (12 to 15 S.P.I.) | 1 | 77 A | Spreader set screws | 4 |
| 88 | Spreader holder screws | 4 | |||
| 52828 D-16 | Throat plate (16 to 18 S.P.I.) | 1 | 52844 A | Spreader thread guide | 1 |
| 87 | Throat plate screw | 4 | 90 | Spreader thread guide screws | 4 |
| 121 GBS | Needles (specify size) | 300 | 52904 G | Cast-off wire | 2 |
| 52708 B | Looper | 2 | 73 A | Cast-off wire screws | 2 |
| 73 | Looper set screw | 2 | 22564 | Needle bar clamp screw | 2 |
| 22563 | Looper needle guard screw | 4 | 21225 | Looper gauge | 1 |
| 33174 B | Looper needle guard holder screw | 4 | 21227 C-14 | Spreader gauge | 1 |
| 52842 G | Needle thread guide wire | 2 | 29484 | Screw assortment | 1 |
| 28 B | Needle thread guide wire screw | 4 |
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World map with latitude and longitude grid lines, showing continents and oceans (no text 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: 847·669·5101
Fax: 847•669•4454
European Distribution Center:
Union Special GmbH
Raiffeisenstrasse 3
D-71696 Möglingen, Germany
Tel: 49·07141·247·0
Fax: 49·07141·247·100
Brussels, Belgium
Charlotte, N.C.
Hong Kong, China
Huntley, IL
Leicester, England
Lille, France
Miami, FL
Milan, Italy
Möglingen, Germany
Montreal, Quebec
Osaka, Japan
Santa Fe Springs, CA
Suwanee, GA
Wayne, NJ
Other Representatives throughout
all parts of the world.
Finest Quality
Union Special INDUSTRIAL SEWING EQUIPMENT