UnionSpecial 39500PA, Adjusting Instructions And Illustrated Parts List

Page 1: ...00PA 39500PE 39500PF 39500PP 39500PT 39500PW Finest Quality Adjusting instructions and illustrated parts list Class 39500 Differential feed overseamers with thumbscrew adjusted feed travel From the library of Superior Sewing Machine Supply LLC ...

Page 2: ...l progression is accom plished Some adjustments performed out of sequence may have an adverse effect on the function of other related parts Implementation of preventative maintenance procedures can bring about signifi cant improvements in operator productivity by avoiding costly equipment breakdowns Whenever it becomes necessary to make repairs or replace parts on your machine be sure to insist on...

Page 3: ...and women s underwear Available Seam Widths 3 32 inch 2 4mm l 8 inch 3 2mm 5 32 inch 4mm 39500 PE Same as 39500 PA except fitted with narrow sewing parts Typical applica tion Seaming women s robes and lingerie 39500 PF Same as 39500 PA except machine is high capacity for sewing medium to heavyweight knit or woven fabrics Also equipped with a main feed dog having 16 T P I Stitch range is 8 16 S P I...

Page 4: ...mulated in crankcase Oil MUST be changed periodically to minimize wear THREADING Be sure machine is threaded properly according to threading diagram Fig 1 for Styles 39500 PA PE PF PP PT or Fig lA for Style 39500 PW THREADING DIAGRAM STYLES 39500 PA PE PF PP PT Before threading machine unlock presser foot release bushing swing presser arm and cloth plate out of position and pull upper looper threa...

Page 5: ...UTE THREAD THRU TENSION POST SLOT TURN TO RELEASE PRESSER ARM ROUTE LOOPER THREAD IN FRONT OF LOOPER THREAD PULL OFF SWING PRESSER ARM OUT A 5 Fig 1 From the library of Superior Sewing Machine Supply LLC ...

Page 6: ...TURN TO RELEASE PRESSER ARM ll j 6 Fig 1A From the library of Superior Sewing Machine Supply LLC ...

Page 7: ... and or grooves of needle s For a quick check pull forth through the needle eye as shown C Fig shred and severe the thread Fig 2 the thread up and down back and 2 If any sharpness exists it will Be sure needle s is all the way up in needle holder and positioned correctly with the spot or scarf to the rear as shown D Fig 2 Machines are sewn off and shipped from the factory with needle s listed in c...

Page 8: ... order would read 11 1000 needles Type 154 GAS Size 075 02911 Fig 3 Fig 4 NEEDLE REPLACEMENT Rotate presser foot release bushing counterclockwise and swing presser foot to the left Turn handwheel in operating direction until needle s is at lowest position Loosen clamp nut using socket wrench No 21388 AU A Fig 3 then remove needle s Turn handwheel until needle holder B is at highest position Insert...

Page 9: ...t shown in Fig 5 then tighten clamp screw A and replace looper thread pull off PRIOR TO MAKING THE FOLLOWING ADJUSTMENT REMOVE CLOTH PLATE CHIP GUARD UPPER KNIFE MAIN DIFFERENTIAL AND CHAINING FEEDS ON MACHINE STYLE 39500 PT REMOVE THE SHIRRING BLADE ASSEMBLY CLOTH PLATE Remove cloth plate A Fig 6 by loosen ing screw B and lifting upward with stud C and screw D still assembled to plate Before repl...

Page 10: ... inch 1 6mm for Style 39500 PW Rotate handwheel to position looper into scarf of needle or left needle on Style 39500 PW and set looper point to touch but NOT deflect needle s then position looper to extreme right and tighten clamp nut C REAR NEEDLE GUARD Remove spring from inside of lower knife holder A Fig 8 then assemble knife holder into throat plate support block Replace rear needle guard B u...

Page 11: ...MUST pass the notch in head of lower looper with minimum clear ance and pass under lower looper thread Again rotate the handwheel until the upper looper is positioned to extreme left as shown in Fig 10 At this time point of upper looper MUST be in position so the de scending needle or right needle will pass to the right of the upper looper thread which extends from the eye of the looper to the pre...

Page 12: ...per looper is at the extreme left end of travel Loosen screw C Fig 11 and rotate upper looper hold er as required to set point of upper loop er to dimension E Fig 13 from top of throat plate 5 With upper looper still positioned at the left end of travel it may be necessary to adjust the looper holder in or out of its shaft to set point of looper to dimension F Fig 13 to the left of needle and or r...

Page 13: ... BACK INTO LOWER KNIFE HOLDER AND ASSEMBLE HOLDER TO THROAT PLATE SUPPORT Check Cutting edge of knife A Fig 15 must be even and parallel with top surface of throat plate Examine sewn sample for specified seam width and appearance Procedure Loosen screw B and adjust knife A up or down until its cutting edge is flush with top of throat plate then tighten screw B Fig 15 If cutting edge of knife is ti...

Page 14: ... chain guard L against top surface of upper knife and slightly back of its cutting edge then tighten nut M Loosen screw F to enable spring pressed lower knife to move freely left to right If desired the lower knife can be locked in position by tightening screw F against knife holder NOTE Locking nut E must be tightened to hold screw F in position screw F also serves as a latch pin for cloth plate ...

Page 15: ...rew J so presser foot will not inter fere with upper looper then tighten locknut H Loosen locknut K and set stop screw F on upper end of lifter lever arm so there is approximately 1 16 inch 1 6mm free motion in lifter lever before presser foot starts to rise then tighten locknut K PRESSER FOOT PRESSURE Check Sufficient pressure must be maintained to feed work uniformly Excessive spring pressure wi...

Page 16: ... shirring blade and underside of presser foot Fig 19 To center shirring blade C over differ ential feed dog loosen screws in collar A Fig 19 actuating collar B operating lever C and loosen tension screw D Move shaft E to the left or right as required to center shirring blade over differential feed dog While holding blade in position thrust both collars A and B against shaft bracket F to eliminate ...

Page 17: ...e is obtained Hold ferrule in position and torque nut to 19 20 in lbs 22 23 em kg If clearance cannot be obtained See FEED DRIVE SEGMENT ADJUSTMENT If desired thumbscrews can be locked in position by tightening nut F for the differential feed or by tightening pressure plug screw for the main feed located in the bed directly above the main feed stitch regulating screw This will prevent accidental c...

Page 18: ...Fig 22 lower looper thread eyelet D tion and tighten screw C Procedure Loosen screw A Fig 22 Center lower loop er thread eyelet B in its adjusting slot and set eyelet in a horizontal position Hold eye let B in position and tighten screw A Loosen screw C Center upper looper thread eyelet D in its adjusting slot and set eye let so it rests on the top surface of lower looper thread eyelet and back of...

Page 19: ...ead control adjustments Lower looper thread too tight Lower looper thread eyelet too far forward Upper looper thread eyelet too far to the rear Upper looper thread tension too loose If the purl is being pulled over the edge as shown in Fig 25 check the following thread control adjustments Upper looper thread tension too tight Upper looper thread eyelet too far forward Lower looper thread eyelet to...

Page 20: ...thrust rear of feed bars with tilt adjusting pin and washer F and guide pin G 3 Thrust the feed control shaft A assuring that washer H is against retaining ring J and flush against the recess in the bed casting Collar K should be thrusted against the bed casting and tightened securely 4 Main feed control link L and main feed drive lever M must be in alignment with main feed rocker lever N to avoid...

Page 21: ...oning to eliminate bind DIFFERENTIAL FEED CONTROL ADJUSTMENT 1 Move differential rocker lever block AA to lowest position in differential feed rocker lever W 2 Rotate differential feed indicator lever X counterclockwise until the pointer is at the rear end of the scale 3 Clamp the indicator lever X with screw AB DIFFERENTIAL FEED DRIVE SEGMENT ADJUSTMENT 1 Move differential rocker lever block AA t...

Page 22: ... back of machine near bottom edge of base 2 Remove top and bottom covers of machine 3 Remove feed eccentric nut A Fig 27 and remove the eccentric B 4 Remove key C 5 Remove three counterweights D Identify these counterweights so that they will be re assembled in the proper places 22 From the library of Superior Sewing Machine Supply LLC ...

Page 23: ...collar re move both halves of cooling fan 11 Remove screw M take off pulley cap N 12 Loosen two screws P remove pulley R Fig 28 13 Remove three screws S take off bearing retaining plate T also spacer collar U may be removed at this time 14 Crankshaft may now be removed 15 If necessary to replace ball bearing V it should be pressed off shaft on an arbor press In replacing bearing it must be pressed...

Page 24: ...e 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 the part number Part numbers represent the same part regardless of catalog in which they appear USE GENUINE REPAIR PARTS Success in the operation of these machines can be secured only with genuine UNI...

Page 25: ...EXV LODED VIEWS AND DESCRIPTION OF PARTS 25 From the library of Superior Sewing Machine Supply LLC ...

Page 26: ...2 26 e 49 6 t 47 From the library of Superior Sewing Machine Supply LLC ...

Page 27: ...for oil sight gauge 1 Screw for chip guard 2 Chip Guard for Styles 39500 PA PE PF PP and PT 1 Chip Guard for Style 39500 PW 1 Upper Looper Thread Tube Assembly 1 Thread Tube 1 Thread Tube Tension Spring 1 Screw for thread tube tension spring 1 Oil Filter Screen 1 Oil Filter Pad 1 Guide for differential feed bar 2 Screw for differential feed bar guide 2 Felt Pad 1 Oil Tube tygothane 1 Oil Tube bras...

Page 28: ...28 From the library of Superior Sewing Machine Supply LLC ...

Page 29: ...590 X Crankshaft Bearing inner right 1 23 660 204 Oil Seal Ring 1 24 660 443 Oil Seal Ring 1 25 39591 H Fan Collar 1 26 22894 0 Spot Screw for fan collar 2 27 22565 F Spot Screw for crankshaft bearing inner right 1 28 29477 LS Crankshaft Assembly for Styles 39500 PA and PE 1 29477 LT Crankshaft Assembly for Styles 39500 PF PP PT and PW 1 29 29477 MC Needle Driving Arm Crank and Connecting Rod Asse...

Page 30: ... 46 30 TORQUE TO 19 20 in lbs 22 23 em kg From the library of Superior Sewing Machine Supply LLC ...

Page 31: ...pin and feed bar guide pin 2 Feed Bar Thrust Washer 1 Main Feed Bar 1 Feed Bar Guide Block 1 Guide Pin for differential feed bar 1 Differential Feed Bar 1 Differential Feed Drive Link 1 Differential Feed Control Link 1 Differential Feed Drive Link Pin 1 Differential Feed Drive Connecting Rod 1 Screw for differential feed drive connecting rod 1 Differential Feed Eccentric for Styles 39500 PA and PE...

Page 32: ...32 From the library of Superior Sewing Machine Supply LLC ...

Page 33: ...rential feed control lever 1 Nut for differential feed control link screw 1 Plug Screw for bed 1 Differential Link Return Spring 1 Screw for differential link return spring 1 Nut differential link return spring screw 1 Main Feed Stitch Regulating Screw 1 Pin 1 Feed Control Shaft 1 Pressure Plug for main feed stitch regulating screw 1 Pressure Plug Screw with nylok insert 1 Collar for feed control ...

Page 34: ...34 I l lfiV t From the library of Superior Sewing Machine Supply LLC ...

Page 35: ...1 Upper Looper Shaft Thrust Washer 2 Upper Looper Connecting Rod 1 Screw for connecting rod 4 Lower Looper Bar Driving Lever and Connecting Rod Assembly 1 Lower Looper Connecting Rod 1 Screw for connecting rod 2 Screw for connecting rod 2 Ball Joint Guide Fork 1 Screw for ball joint guide fork 2 Lower Looper Bar Driving Lever 1 Felt Plug for connecting rod 1 Oil Splasher 1 Screw for oil splasher 1...

Page 36: ...36 From the library of Superior Sewing Machine Supply LLC ...

Page 37: ...C 3 3211 for 3 32 inch 2 4mm wide seam for Styles 39500 PA PF and PP 1 Throat Plate marked 11 AC l 811 for l 8 inch 3 2mm wide seam for Styles 39500 PA PF and PP 1 Throat Plate marked 11 CU11 for 5 32 inch 4mm wide seam for Styles 39500 PA PF and PP 1 Throat Plate marked 11 CS11 for 3 32 inch 2 4mm wide seam for Style 39500 PE 1 Throat Plate marked 11 CT11 for 1 8 inch 3 2mm wide seam for Style 39...

Page 38: ...27 38 From the library of Superior Sewing Machine Supply LLC ...

Page 39: ...Screw for Style 39500 PW 1 Presser Arm for Style 39500 PE 1 Screw for presser arm 1 Nut for presser arm screw 1 Foot Lifter Lever Shaft Thrust Collar 1 Screw for collar 2 Foot Lifter Lever Shaft 1 Foot Lifter Lever Arm 1 Screw for foot lifter lever arm 1 Lock Nut for foot lifter lever arm 2 Screw for foot lifter lever arm 2 Foot Lifter Lever Spring 1 Foot Lifter Lever 1 Foot Lifter Intermediate Le...

Page 40: ...40 From the library of Superior Sewing Machine Supply LLC ...

Page 41: ...y for Style 39500 PW 1 Screw for Styles 39500 PE and PW 1 Screw for Style 39500 PT 1 Hinge Spring for Styles 39500 PE and PT 1 Hinge Spring for Style 39500 PW 1 Stitch Tongue marked 11 FA11 for Style 39500 PE 1 Stitch Tongue marked 11 FB11 for Style 39500 PT 1 Stitch Tongue marked 11 EF for Style 39500 PW 1 Screw 2 Washer Plate 1 Pressure Plate Assembly for Style 39500 PT 1 Acuating Collar 1 Screw...

Page 42: ...1 i 2 a 3 1 i 11 I I 42 From the library of Superior Sewing Machine Supply LLC ...

Page 43: ...r Style 39500 P l 1 Tension Post Mounting Bracket for Styles 39500 PA PE PF PP and PT Tension Post Mounting Bracket for Style 39500 PW 1 Tension Post Nut 3 or 4 Screw for tension post mounting bracket 1 Screw for tension post mounting bracket 1 Presser Spring Plunger 1 Top Cover Needle Thread Eyelet for Styles 39500 PA PE PF PP and PT 1 Top Cover Needle Thread Eyelet for Style 39500 PW 1 Screw for...

Page 44: ...31 30 32 35 39 44 From the library of Superior Sewing Machine Supply LLC ...

Page 45: ...Style 39500 PW 1 Lead Eyelet Socket Ball for Style 39500 PW 1 Screw 1 Thread Stand Base for Style 39500 PW 1 Cap 1 Screw 1 Ball Split Socket for Style 39500 PW 2 Washer for Style 39500 PW 1 Nut for Style 39500 PW 1 Nut for Style 39500 PA PE PF PP and PT 1 Lockwasher for Styles 39500 PA PE PF PP and PT 1 Washer for Styles 39500 PA PE PF PP and PT 1 Washer for Styles 39500 PA PE PF PP and PT 1 Threa...

Page 46: ... D 27 22569 J 27 22569 K 27 22571 D 39 22571 E 27 22572 A 27 22572 B 31 22580 A 33 22585 A 37 22586 R 27 22587 J 37 22587 M 29 22588 J 37 22596 E 39 41 22596 H 29 22597 A 31 22597 E 39 22650 CB 4 45 22650 CE 6 45 22651 AB 3 31 22651 CD 4 45 22651 CD 5 45 22652 A 6 33 22653 B 12 37 22653 D 4 27 22657 D 12 27 22704 39 22729 B 37 22729 D 35 22729 E 35 22733 31 22738 37 22738 B 39 22743 27 41 22747 31...

Page 47: ...43 39557 A 43 39557 B 43 39557 c 43 39557 E 43 39557 F 43 39563 F 43 39563 G 39 39563 H 27 39563 w 43 39568 A 39 39568 B 43 39568 D 43 3956a E 43 39568 G 27 39568 J 27 39568 L 43 39568 AA 43 39568 AC 39 39570 37 39570 J 37 39571 B 37 39571 D 37 39571 F 37 39572 37 39573 A 37 39573 E 37 39573 H 37 39573 J 37 39573 K 29 39573 AA 29 3957a F 27 3957B M 43 39578 s 43 39578 T 27 39578 u 27 39578 AF 43 3...

Page 48: ... Dallas TX Commerce CA New York NY Philadelphia PA Woburn MA Opa Locka FL Montreal Quebec Toronto Ontario Catano Puerto Rico Brussels Belgium Leicester England Paris France Stuttgart W Germany Hong Kong It is important to remember that LEWIS AND COLUMBIA machines are also products of UNION SPECIAL thus offering the industry the most com plete line of the Finest Quality sewing machines Other Repres...