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UnionSpecial 53700B, Adjusting Instructions And Illustrated Parts List

The UnionSpecial 53700B, a versatile industrial sewing machine, is equipped with a range of features to effortlessly stitch various materials. This product's Adjusting Instructions and Illustrated Parts List manual can be downloaded for free from manualshive.com, empowering users to make precise adjustments and effectively maintain their machine's optimal performance.

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Part No.

D e s c r i p t i o n

A m t .

Req.

Ref.

N o .

31

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53750
53754
55235D
6042A
55235E
77
51236J
53754A
53754F
51242L
53754D
482C
22894C
22768
18
15037A
21657E
53754G
22729C
15037A
43242N
43242P
43241D
22729C
41255B
22747
22882
53783R
53783P
20
18
9255
240
53783L
52883S
22557B
56383AB
53783N
22537
53783T
21657Y
402
22596
21657W
660-207

Needle Lever and Upper Feed Lift Driving Lever Shaft .................................
Upper Running Feed Lift Driving Lever ..........................................................

Locking Stud ..........................................................................................
Locking Stud Washer ..............................................................................
Locking Stud Nut ....................................................................................

Screw ...........................................................................................................
Link Pin ..........................................................................................................
Upper Running Feed Driving Connecting Rod Ball Joint Assembly ...............
Upper Feed Bell Crank Lever Shaft ...............................................................
Washer .........................................................................................................
Upper Feed Bell Crank Lever ........................................................................
Collar ...........................................................................................................

Set Screw ...............................................................................................

Screw ...........................................................................................................
Ball Joint Locking Nut ...................................................................................
Ball Joint Regulating Nut ..............................................................................
Washer, for 53754G ......................................................................................
Bell Crank Lever Ball Joint, upper .................................................................

Bearing Cap Screw ................................................................................

Nut, right thread ...........................................................................................
Connecting Rod, one inch long ...................................................................
Nut, left thread .............................................................................................
Bell Crank Lever Ball Joint, lower ..................................................................

Bearing Cap Screw ................................................................................

Fork, for 43241D ............................................................................................
Screw, for 41255B .........................................................................................
Screw ...........................................................................................................
Presser Foot Lifter Lever Adjusting Plate ........................................................
Presser Foot Lifter Lever Link, adjustable .......................................................
Washer .........................................................................................................
Nut ...............................................................................................................
Washer .........................................................................................................
Screw ...........................................................................................................
Presser Foot Lifter Lever Bell Crank ...............................................................
Presser Foot Lifter Lever Bell Crank Spring .....................................................
Screw ...........................................................................................................
Presser Foot Lifter Lever Connecting Rod .....................................................
Presser Foot Lifter Lever, internal ..................................................................

Screw .....................................................................................................

Presser Foot Lifter and Tension Disc Release Lever .......................................
Tension Release and Foot Lifter Lever Shaft Connection ..............................

Screw .....................................................................................................
Screw .....................................................................................................

Tension Release and Foot Lifter Lever Shaft ..................................................
Oil Seal Ring ..................................................................................................

UPPER FEED LIFT AND PRESSER FOOT LIFTER PARTS

Summary of Contents for 53700B

Page 1: ...STREAMLINED FIFTYTHOUSANDSERIES 53700B 53800B CATALOG NO 100L SECONDEDITION ADJUSTINGINSTRUCTIONSAND ILLUSTRATEDPARTSLIST STYLES 11 21 03 ...

Page 2: ...upper feed driving eccentric and needle lever crank have substantially increased the speed of these machines The almost entirely automatic lubrication system makes maintenance simple All parts are made by precision methods insuring complete interchangeability It is our constant aim to furnish carefully prepared information which will enable our customer to secure all possible economies from the us...

Page 3: ...EEDLEGUARD 11 SYNCHRONIZATIONOFTHEUPPERROLLERFEED 12 THREADING 12 SETTINGTHELOOPERTHREADTAKE UP 13 THREADTENSIONS 13 PRESSERFOOTPRESSURE 13 SETTINGNEEDLETHREADTAKE UP 13 SETTINGSPRINGRETAINERSONLOOPER 14 THREADTENSIONRELEASE 14 SETTINGTHEATTACHMENTS 14 MAINFRAME CAST OFFPLATE MISCELLANEOUSCOVERSANDPLATES 17 CLOTHPLATES CLOTHPLATECOVERS MISCELLANEOUSANDATTACHMENTS 19 MAINFRAME BUSHINGSANDMISCELLANE...

Page 4: ...800B For seaming operations on automobile upholstery also on fiber fabric and plastic auto mobile seat covers and for similar operations on medium heavy to heavy weight materials with or without corded leatherette or plastic piping two needle machine four to seven stitches per inch seam specification 401 SSa 2 Maximum recomended speed 3300 R P M NEEDLES Each UNION SPECIAL needle has both a type nu...

Page 5: ... 26 22894C Eccentric Set Screw 1 27 22559A Bearing Cap Screw lower 2 It will be noted in the above example that the eccentric 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 parts for the class 53700B and 53800B are not the same the difference will be shown in the illustra...

Page 6: ...l with a Saybolt viscosity of 90 to 125 seconds at 1000 Fahrenheit Oil is filled at the spring cap in the top cover and the oil level is checked at the sight gauge 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 lubrication which is almost entirely automatic requires a minimum of manual oiling The ...

Page 7: ...Fig 1 7 ...

Page 8: ...in moves to the left and is even with the left side of the needle If the motions synchronize the height of the eye of the needle with respect to the looper point will be the same A variation of 005 inch is allowable If the distance from the eye of the needle to the point of the looper is greater when the handwheel is turned in the operating direction move the looper drive lever rocker to the rear ...

Page 9: ... SETTING THE FEED DOG Set the feed dog A Fig 4 in the throat plate so there is equal clearance on all sides See that the tips of the teeth extend 1 2 to 1 full tooth above the throat plate and are parallel with the throat plate at high point of travel Height can be set by loosening feed dog attaching screw B and adjusting feed dog supporting screw C Parallelism can be set by loosening nut D and ro...

Page 10: ...n until the needle bar is at the bottom of its stroke Loosen nut B Fig 6 and move upper feed lift driving lever A so that the teeth of the upper feed dog is 5 32 7 9mm for style 53700B and 3 16 to 13 64 4 8 to 5 2mm for style 53800B above the top of the throat plate Then tighten nut B securely The bell crank lever ball joint A Fig 7 should be in the center of the upper feed bell crank lever B The ...

Page 11: ...per C moving to the left is even with the needle To move needle guard forward or backward merely loosen screw D move needle guard as required and retighten screw D To raise or lower the needle guard loosen screw D and turn screw E clockwise to lower or counterclockwise to raise Retighten screw D after guard is properly set SETTING FRONT NEEDLE GUARD Set the front needle guard F Fig 11 so that it b...

Page 12: ...NEEDLE THREAD TAKE UP WIRE AND FRAMEEYELET Set the needle thread take up wire A Fig 13 so that its upper surface is even with the top of the hole in the needle bar thread eyelet B when the needle bar is at the bottom of its stroke Lower this setting for a smaller needle thread loop or raise it for a larger loop Set the needle thread frame eyelet C Fig 13 perpendicular to the machine base and 1 4 a...

Page 13: ...13 EXPLODED VIEWS AND DESCRIPTION OF PARTS ...

Page 14: ...14 ...

Page 15: ...er Spring Screw Spring Washer Screw Screw Cloth Plate Screw Screw Screw Head Cover Throat Plate Support Dowel Pin lower Dowel Pin upper Needle Thread Pull off Wire Screw Throat Plate for Style 53700B Throat Plate for Style 53800B Needle Thread Lubricator Lubricating Felt Screw Adapter Screw Frame Thread Eyelet Washer Screw Set Screw for upper feed bell crank lever shaft Presser Bar Connection Guid...

Page 16: ...16 ...

Page 17: ...Main Shaft Bushing Housing includes bushing Main Shaft Bushing left and right Looper Drive Lever Shaft Bushing front Tension Release Lever Shaft Bushing Looper Drive Lever Shaft Bushing middle Looper Rock Shaft Bushing right Presser Foot Lifter Lever Bushing Upper Running Feed Drive Rock Shaft Bushing right Oil Tube Holder Oil Tube for feed lift and looper avoid eccentric Needle Lever Bushing fron...

Page 18: ...18 ...

Page 19: ... Plug Screw Gasket Oil Pump Driven Gear Screw Oil Pump Housing Oil Pump Driving Shaft Oil Pump Driving Shaft Gear Screw OIl Pump Housing Cover Filter Cap Assembly Washer rubber Screw Screw Base Plate Mounting Isolator Plug Screw Oil Wick Wedge Pin Oil Wick Oil Wick Spring Oil Wick Plug Screw Lint Filter Screen Screw for 51282AH Oil Shield end and back Washer 660 136 258A 52936 51242S 52882L 52882A...

Page 20: ...20 ...

Page 21: ...w for housing Crankshaft Bearing Housing Gasket O Ring for pulley Crankshaft Thrust Collar Set Screw Lubricating Felt Upper Running Feed Drive Eccentric Assembly Bearing Cap Screw Eccentric Set Screw Nut right thread Top Feed Driving Connecting Rod Crankshaft Assembly Bearing Cap Screw Needle Lever Connecting Rod Pump Driving Gear Screw Looper Drive Lever Shaft Screw Ball Stud Guide Fork Looper Dr...

Page 22: ...22 ...

Page 23: ... Felt Link Pin Screw Looper Avoid Eccentric Assembly Spot Screw Feed Lift and Looper Avoid Eccentric Link Pin Lubricating Felt Link Pin Screw Take up Time Spot Screw Set Screw Locking Stud Looper Rock Shaft Collar Washer Nut Thrust Washer Stop for looper connecting rod Looper Rock Shaft Arm Screw Looper Rock Shaft Looper Rocker Frame for Style 53800B Spot Screw Set Screw Looper Rocker Frame for St...

Page 24: ...24 ...

Page 25: ... Needle Guard Guide Screw Washer Screw Lower Feed Dog for Style 53800B Needle Guard for Style 53800B Nut Looper Connecting Rod Ball Joint left Bearing Cap Screw Nut left thread Looper Connecting Rod 1 11 32 inches long Looper Connecting Rod Ball Joint right Spring Bearing Cap Screw Spring Pin Nut Looper Needle Guard for 53700B older models Screw Looper for Style 53700B Looper Needle Guard Pin Loop...

Page 26: ...26 ...

Page 27: ...d Bar Spacing Link Upper Running Feed Bar Link Bushing Screw Screw Screw Presser Bar Connection Block Screw Upper Running Feed Foot Lifter Link Screw Screw Connection Link Screw Upper Running Feed Drive Rock Shaft Collar Screw Upper Running Feed Lifter Drive Link Screw Link Pin Lubricating Felt Upper Running Feed Driving Lever Clamp Screw Washer Nut Presser Bar Presser Bar Connection and Guide Scr...

Page 28: ...28 ...

Page 29: ...le 53700B Presser Foot for Style 53700B Screw for Style 53700B Upper Feed Dog for Style 53700B Needle Lever Thread Eyelet for Style 53800B Needle Bar Thread Eyelet for Style 53800B Needle Bar for Style 53800B Needle Stop Pin Set Screw for needles for Style 53800B Needle Bar Head for Style 53800B Thread Guide Thread Guide Screw Screw for Style 53800B Presser Foot for Style 53800B Screw Upper Feed D...

Page 30: ...30 ...

Page 31: ...ng Feed Driving Connecting Rod Ball Joint Assembly Upper Feed Bell Crank Lever Shaft Washer Upper Feed Bell Crank Lever Collar Set Screw Screw Ball Joint Locking Nut Ball Joint Regulating Nut Washer for 53754G Bell Crank Lever Ball Joint upper Bearing Cap Screw Nut right thread Connecting Rod one inch long Nut left thread Bell Crank Lever Ball Joint lower Bearing Cap Screw Fork for 43241D Screw fo...

Page 32: ...32 ...

Page 33: ... UP PARTS 2 1 1 1 1 1 1 1 2 1 1 13 14 15 16 17 18 19 20 21 22 23 50 216BLK 51257P 51204B 51204 51204A 22798A 51204C 77 J87J 21657E 22528 Dowel Pin Cast off Support Plate Auxiliary Cast off Cast off Wire Cast off Wire Support Screw Cast off Retaining Wire Support Bracket Screw Screw Washer Screw THREAD TENSION PARTS FOR TWO NEEDLE MACHINE 2 1 4 1 4 8 4 2 2 4 24 25 26 27 28 29 30 31 32 33 43266 5638...

Page 34: ...34 ...

Page 35: ...CCESSORIES 1 1 1 1 1 1 1 1 2 3 4 5 6 21101W4 21101W2 12288403 21201 660 264 421D28 21388 Thread Stand complete for Style 53800B Thread Stand complete for Style 53700B Tweezer Screw Driver Hook Treadle Chain Wrench single end for 3 8 inch nut ...

Page 36: ...36 NOTES ...

Page 37: ...37 NOTES ...

Page 38: ... 1 2 9 1 9 2 2 5 2 9 1 9 2 D 2 5 2 9 3 4 8 A W 2 9 2 9 4 1 5 2 9 4 7 6 A R 2 3 2 9 4 7 6 B J 2 3 2 9 4 7 6 D T 2 1 2 9 4 7 6 R F 2 3 3 3 1 7 4 B 2 3 2 7 3 5 1 7 8 D 1 9 3 5 7 3 1 A 1 5 3 5 7 7 2 H 1 5 3 9 5 8 2 L 1 7 4 0 2 3 1 4 1 0 7 1 G 2 7 4 1 2 5 5 B 2 1 3 1 4 1 3 9 4 A 1 9 4 2 1 D 2 8 3 5 4 3 2 4 1 D 3 1 4 3 2 4 2 N 3 1 4 3 2 4 2 P 3 1 4 3 2 6 6 3 3 4 5 4 A 2 1 4 8 2 2 3 4 8 2 C 31 5 0 2 1 6 ...

Page 39: ...5 5 3 7 8 2 B 1 5 5 3 7 8 2 E 1 5 5 3 7 8 3 C 2 7 5 3 7 8 3 D 2 7 5 3 7 8 3 L 3 1 5 3 7 8 3 N 3 1 5 3 7 8 3 P 3 1 5 3 7 8 3 R 3 1 5 3 7 8 3 T 3 1 5 3 7 8 7 2 7 5 3 7 8 8 A 1 7 5 3 7 8 8 B 2 7 5 3 7 9 0 A 1 7 5 3 8 25 5 3 8 0 5 A 2 5 5 3 8 2 0 1 8 2 9 53824A18 15 5 3 8 2 5 2 5 5 3 8 2 6 2 9 5 5 2 3 5 D 3 1 5 5 2 3 5 E 3 1 5 5 2 4 4 G 2 3 5 6 2 9 5 6 3 3 4 E 2 5 5 6 3 4 1 G 2 5 5 6 3 5 0 B 2 9 5 6 3...

Page 40: ...7 669 5101 Fax 847 669 4454 Union Special GmbH EuropeanDistributionCenter Raiffeisenstrasse 3 D 71696 Möglingen Germany Tel 49 07141 247 0 Fax 49 07141 247 100 JUKICORPORATION INTERNATIONALSALESDIVISION 8 2 1 KOKURYO CHO CHOFU SHI TOKYO 182 JAPAN PHONE 03 3430 4001 5 FAX 03 3430 4909 4914 4984 ...

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