SERVICE MANUAL - Pfaff Industrial Machinery
Contents
1. Tum feed driving eccentric 1 screws 2 according to the requirement Make sure that the notch in the feed driving eccentric is visible Timing the needle feed motion Adjustment not applicable to PFAFF 483 Requirement Both the needle bar and the feed dog should remain motionless when reverse feed control 3 is moved up and down with the machine set for its longest stitch and the needle bar set 0 6 mm past its b d c cylindrical pin in hole 3 Turn feed driving eccentric 1 screws 2 according to the requirement making sure that the notch in feed driving eccentric 1 points to the front Adjustment aid For easier checking insert a screwdriver in driving crank 4 8 1 Centering the needle in the needle hole Requirement The needle must penetrate the needle hole right in the center For PFAFF 481 Set the stitch length at 0 and position the needle right above the needle hole Loosen screws 1 and 2 Position needle bar frame 3 both lengthwise and crosswise of the sewing direction according to the requirement and tighten screw 1 Turn the handwheel a few turns to ensure that the needle bar is not under stress in the needle bar frame and tighten screw 2 8 2 For PFAFF 483 Position the needle bar just above the needle hole Loosen screws 1 2 and 3 Position needle bar frame 4 both lengthwise and crosswise of t2. fully or by means of the automatic presser foot lift 910 there must not be any contact between presser foot bush 6 and presser foot Lower presser bar lifter 1 to rest the presser foot on the needle plate Turn out regulating screw 2 to lower the pressure on the presser bar Place the 5 mm thick blade of the gauge under the presser foot fulcrum Loosen screw 3 and raise presser bar lifter 1 Let the needle penetrate the needle hole of the presser foot and adjust the presser foot so that the needle is centered in the needle hole of the presser foot Press lifting bracket 4 downwards onto the raised lifting lever 5 and tighten screw 3 Remove the gauge and lower the presser foot onto the needle plate 20 15 Eliminating feed differences Adjustment not applicable to PFAFF 483 Requirement With the machine set for its longest stitch both the feed dog and and the needle must make feed strokes of the same length when the handwheel is turned Shift hinge stud 1 nut 2 to adjust the feed stroke of the needle feed Check whether the needle feed is still zeroed properly see Section 3 and adjust if necessary 16 Tension release mechanism Requirement When presser bar lifter 1 is raised both tension discs must be at least 0 5 mm apart Ad
3. bobbin winder and adjust drive wheel 1 screw 2 according to the requirement Place a bobbin on the winder spindle thread the machine for bobbin winding and switch on the bobbin winder To adjust the amount of thread wound shift regulating stud 3 screw 4 according to the requirement 26 22 Limiting the stitch length Loosen screw 1 accessible through the assembly hole or turn it out according to the limit to be set Set stitch length control lever 2 at the desired maximum stitch length Set limiting angle 3 from above against control lever 2 and fix it in the desired position by tightening screw 1 in either the lower or the upper hole 27 28 23 Matching forwards and reverse stitch lengths Requirement When the stitch length is set at 3 the forwards feed must match the reverse feed Turn bush 1 screw 2 in accordance with the requirement Make sure that the eccentricity of bush 1 points downwards 24 Presser foot pressure Requirement Proper feeding of the material must be ensured even at top sewing speed There must Contents Turn screw 1 according to the requirement 29 30 Contents 20 21 22 23 24 Checking and adjustment ald ss a rn Slate aae Tea ticks 3 Preliminary adjustment of the needle height eee ceeeeeesteeeeeaeeaeeeeeeeeeeeeeeees 4 Zeroing the TESA
4. case base 6 At the left point of reversal of bobbin case opener 3 the front edge of the bobbin case opener finger must be roughly 0 6 mm behind the front edge of bobbin case cam 7 At the left point of reversal of bobbin case opener 3 there must be a clearance of roughly 0 3 mm between bobbin case base 6 and positioning finger 8 and stop screw 1 must be in contact with stop pin 5 Loosen screw 1 Then loosen screw 2 so that bobbin case opener 3 is still held in position Adjust bobbin case opener 3 according to requirements 1 and 2 Turn bobbin case opener 3 according to requirement 1 and tighten screw 2 Set fixing collar 4 against bobbin case opener 3 and stop pin 5 and tighten screw 1 13 Timing the bobbin case opener Requirement In needle bar position 1 8 mm past b d c cylindrical pin in hole 4 bobbin case opener finger must be at its right point of reversal Adjust bobbin case opener eccentric 1 screws 2 according to the requirement Adjustment aid To facilitate checking insert a screwdriver in the slot of bobbin case opener 3 14 Clearance between presser foot and needle plate Requirement With presser bar lifter 1 raised there must be a clearance of 5 mm between presser foot and needle plate Note When the presser foot is raised to its top position upon actuating the knee lever
5. permitted to work on live parts For exceptions please see the EN 50 110 regulations Conversions or changes to the machine must only be made on adherence to all safety regulations For repairs only replacement parts approved by us must be used The sewing head must not be operated until it is ascertained that the whole sewing unit corresponds to EC regulations Tools gauges and other adjustment aids set of screwdrivers with blades from 2 to 10 mm wide set of spanners from 7 to 14 mm wide set of hexagonal allen keys ranging from 1 5 to 6 mm wrench 22 mm wide metal ruler part No 08 880 218 00 cylindrical pin 5 mm in diameter part No 13 030 341 05 adjustment gauge part No 61 111 642 19 ae A i Notes on the service manual All the adjustments in this service manual apply for a completely mounted machine No mention is made of the machine covers that occasionally have to be screwed off and back on for testing and adjustment purposes The screws and nuts in brackets are for the attachment of machine parts that must be loosened before the adjustments and tightened up again afterwards Abbreviations t d c top dead center b d c bottom dead center Checking and adjustment aid By inserting the cylindrical pin in one of the adjustment holes 1 to 6 it is possible to fix the required needle bar positions very precisely Turn the handwheel until the needle bar is roughly in the required position Insert the 5 mm th
6. 0 8 mm below the bottom edge of the sewing hook 2 there must be a clearance of 0 5 mm between the lug of positioning finger 3 and the inside edge of the positioning slot Adjust the hook screws 1 without shifting it and the needle bar screws 2 without turning it according to requirement 1 Set lug of positioning finger 3 into the slot in the bobbin case base adjust and fix it according to requirement 2 11 Vertical position of bobbin case opener Requirement 1 Small hook 481 and 483 At the left point of reversal of bobbin case opener 3 the bobbin case opener finger must be roughly on one level with the lug of bobbin case base 4 2 Large hook 481G and 483G At the left point of reversal of bobbin case opener 3 the top edge of the bobbin case opener finger must be 0 5 mm above the bottom edge of bobbin case cam 5 T W X u ee eh sr 6 2 EL ol TO Turn bobbin case base 1 screw 2 accoring to requirements 1 and 2 12 Position of bobbin case opener Requirement il Large hook 481 and 483 Large hook and small hook 481 and 483 Small hook 481 and 483 With bobbin case opener 3 in its left point of reversal there must be a clearance of approx 0 8 mm between the front edge of the bobbin case opener finger and the edge of bobbin
7. MOON ad ee rein 5 6 Zeroing the needle feed motion not applicable to PFAFF 483 1 1 7 FE SCHIP GRIMOUIO Rint a a Nat ea Ne ee Dee 8 Feedidag heiaht nun net lan reinste un 9 Feed driving motion near need ee 10 Timing the needle feed motion not applicable to PFAFF 483 ooeec 11 Centering the needle in the needle hole nesnnneessseeennneeeeennnnnnn 12 13 Eccentric hook shaft bearing and hook to needle Clearance 14 Needle rise final adjustment of needle height and bobbin case positioning finger 15 Vertical position of bobbin case opener nesssssssseesnnneeesssnennnnnnnnesnsnnnnnnnnennnan 16 Position of bobbin case opener ucneesseessssssenneensssnnnnnnnnenensnnnnnnneennsnnnneenennnnn 17 Timing the bobbin Case Opener unse suite nal 18 Clearance between presser foot and needle plate eenennnnn 19 Eliminating feed differences not applicable to PFAFF 483 en 20 Tension release mechanism c ccececeseeseececerseqnsecceeeesduneenceeeessunendaeteessnenecdensestennnaeeneess 21 Thread check spring and thread regulator 2224444222422 nennen 22 Knee lever resting position eeeeeeee aaa aaa aaa aaa aaa aaa nennen 23 Knee lever plays o 2 el A AA Aa OR EO need 24 Adjusting the knee lever motion eeee eee aaa aaa aaa aaa aaa iii i 25 BOBDIN WINGER sabina takt o dan a
8. PFAFF 481 483 SERVICE MANUAL 296 12 17 437 Justieranleitung engl 06 09 Notes on safety The machine must only be operated in full knowledge of the instruction book and by persons with appropriate training Before commissioning the machine also read the motor manufacturer s safety notes and instruction manual The machine must only be used for the purpose intended It must not be operated without the safety devices it is equipped with all valid safety regulations must be adhered to When gauge parts are exchanged e g needle presser foot needle plate feed dog and bobbin during threading when the workplace is left and during service work the machine must be isolated from the mains by switching off the main switch or disconnecting the mains plug On mechanically operated clutch motors without start inhibitor it is necessary to wait until the motor has stopped Daily servicing work must only be carried out by persons with appropriate training Repairs and special maintenance work must only be carried out by trained technicians or persons with appropriate training For service or repair work on pneumatic systems the machine must be disconnected from the compressed air supply system The only exceptions to this are adjustments and function checks carried out by appropriately trained technicians Work on the electrical equioment must only be carried out by electrical engineers or other appropriately trained technicians It is not
9. d EA Pa E Aaa a 26 kimitngsthesttchlengih ca od AA ETA 27 Matching forwards and reverse Stitch lengths eee eau aaa aaa aaa aaa aaa aaaaaanaae 28 Presser foot pressure uuuuuue eee aaa aaa aaa aaa aaa aaa aaa aaa aaa anawa aaa aa uwaa a aaaaaaaninaaa 29 Note 4 gt Europdische Union Wachstum durch Innovation EFRE PFAFF PFAFF Industriesysteme und Maschinen AG Hans Geiger Str 12 IG Nord D 67661 Kaiserslautern Telefon 49 6301 3205 0 Telefax 49 6301 3205 1386 E mail infoQpfaff industrial com Gedruckt in der BRD Printed in Germany Imprim en la R FA Impreso en laR FA PFAFF Industriesysteme und Maschinen AG 2009 PFAFF is the exclusive trademark of VSM Group AB PFAFF Industriesysteme und Maschinen AG is an authorized licensee of the PFAFF trademark
10. he sewing direction according to the requirement and tighten screw 2 just lightly and screw 3 firmly Turn screw 1 to move the guide pin behind this screw towards the eye of the needle bar frame and tighten it Turn the handwheel a few turns to ensure that the needle bar is not under stress in the needle bar frame and tighten screw 2 Eccentric hook shaft bearing and hook to needle clearance Requirement 1 The notch in bearing 3 see arrow must be visible from below There must be a slight but still noticeable play between gears 5 and 7 2 With the hook set lightly against spin disc 4 and the hook point opposite the center line of the needle there must be clearance of less than 0 1 mm between the hook point and the clearance cut of the needle 3 Gear 5 must be flush with gear 7 o CA EN om NAAT Loosen screws 1 and 2 Turn bearing 3 according to requirement 1 Set the hook lightly against spin disc 4 shift bearing 3 without turning it according to requirement 2 and tighten screws 1 and 2 Position gear 5 screws 6 according to requirement 3 10 Needle rise final adjustment of needle bar height and bobbin case positioning finger Requirement With the stitch length set at 0 and the needle bar at a position 1 8 mm past b d c cylindrical pin in hole 4 1 the hook point must be opposite the center line of the needle and the top edge of the needle eye must be
11. ical pin in hole 3 for PFAFF 481 or 0 6 mm past t d c cylindrical pin in hole 1 for PFAFF 483 In this position the notch in feed lifting eccentric 1 should be positioned perpendicularly below the center of the shaft Turn feed lifting eccentric 1 Screws 2 according to the requirement Feed dog height Requirement With the stitch length set at 0 and the needle bar at a position 0 6 mm past b d c cylindrical pin in hole 3 for PFAFF 481 and 0 6 past t d c cylindrical pin in hole 1 for PFAFF 483 1 the feed dog must be positioned in the middle of the needle plate slots when looked at from the side as well as in feeding direction 2 the feed dog must be at its top point of reversal and must contact the gauge throughout its entire length 3 Fis 4 6 e Seams X Move feed bar 1 screw 2 according to requirement 1 Lower the presser foot until it rests on the gauge Turn eccentric 3 screw 4 and eccentric 5 screw 6 according to requirement 2 Feed driving motion Requirement With the longest stitch length set and the needle bar at 0 6 mm past b d c cylindrical pin in hole 3 for PFAFF 481 the needle bar at 0 6 mm past t d c cylindrical pin in hole 1 for PFAFF 483 the feed dog should not move when the reverse feed control is moved up and down
12. ick cylindrical pin in the specified adjustment hole and press against it Turn the handwheel slightly to and fro until the cylindrical pin engages in the crank recess behind the bearing plate thus blocking the machine Adjustment hole 1 0 6 mm past top dead center of the needle bar 0 6 past t d c Adjustment hole 3 0 6 mm past the bottom dead center of the needle bar 0 6 past b d c Adjustment hole 4 1 8 mm past the bottom dead center of the needle bar needle rise position Adjustment hole 5 top dead center of the needle bar t d c N Adjustment hole 6 4 mm past bottom dead center of needle bar 4 past b d c Preliminary adjustment of needle height Requirement With the needle bar at b d c there must be a clearance of 16 5 mm between needle holder and needle plate Move needle bar 1 screw 2 according to the requirement Make sure that when looking in the feed direction the needle retaining screw points to the right 2 1 Zeroing the feed motion Requirement The feed dog must not move when turning the handwheel with the stitch length set at 0 Zeroing procedure with the gearbox closed Raise the presser foot and set the stitch length control lever 1 at its lowest position Turn eccentric bushing 2 screw 3 so that mark 4 is roughly at the bo
13. just tension release lever 2 screw 3 according to the requirement Lower the presser foot onto the needle plate Now the tension must be fully activated 21 22 17 Thread check spring and thread regulator Requirement 1 Thread check spring 3 must have moved by its full stroke by the time the point of the needle enters the material stroke approx 7 mm 2 Thread regulator 4 must be fixed in the elongated hole so that thread check spring 3 moves by 1 mm by the time the hook has widened the thread loop to its maximum Turn thread tension 1 screws 2 according to requirement 1 Shift thread regulator 4 screws 5 according to requirement 2 Note The stroke of thread check spring 3 and the position of thread regulator 4 are dependent on the type of thread and material used and should be adjusted according to the appearance of the seam 18 Knee lever resting position Requirement When at rest knee lever connecting rod 2 must be at right angles with the bedplate Raise the presser foot by means of the presser bar lifter Push the knee lever joint on knee lever shaft 1 and let the connecting rod 2 engage in the joint Turn stop screw 3 nut 4 according to the requirement 23 24 19 Knee lever play Requirement When the presser foot is resting on the needle pla
14. te there must be a clearance of 1 3 mm between lifting lever 3 and lifting piece 4 Position the needle at its b d c and let the presser foot down on the needle plate Turn crank 1 screws 2 according to the requirement Make sure the vertical knee lever shaft has no end play 20 Adjusting the knee lever motion Requirement When the knee lever is pushed by the full amount of its travel there must be a clearance as indicated in the table below between presser foot and needle plate and the presser bar lifter should drop by its own weight Version A and subclass 31 7mm Versions B and C 9mm Turn stop screw 1 nut 2 out a few turns Raise the presser bar lifter Place the 7 mm thick or the 9 mm thick blade of the gauge under the presser foot and lower the presser bar lifter Push the knee lever until a noticeable resistance is felt the presser foot must not yet lift off the gauge First turn in stop screw 1 nut 2 fully then back out by half a turn 25 21 Bobbin winder Requirement When the bobbin winder is engaged the winder spindle should be driven reliably when the bobbin winder is disengaged however drive wheel 1 must not contact friction wheel 5 The bobbin winder should stop automatically when the thread wound on the bobbin has reached a point about 1 0 mm below the bobbin rim Switch on the
15. ttom and the edge of the milled surface is at an angle of 45 to the machine front for final adjustment see section 23 nsert an allen key in one of the holes in collar 5 Use the allen key to hold the shaft in position Rotate the handwheel and at the same time turn shaft 6 screw 7 with the allen key according to the requirement Remember that in the PFAFF 483 there must be a clearance of 8 mm between the bearing bush and actuating crank 8 2 2 Zeroing procedure with the gearbox open Raise the presser foot and set the stitch length control lever 1 at its lowest position Tum eccentric bushing 2 screw 3 so that mark 4 is roughly at the bottom and the edge of the milled surface is at an angle of 45 to the machine front for final adjustment see section 23 Turn crank 5 screw 6 according to the requirement Zeroing the needle feed motion Adjustment not applicable to Pfaff 483 Requirement With the stitch length control set at O the needle bar should make no feed motion when the handwheel is turned Adjust needle feed regulating crank 1 screw 2 according to the requirement Adjustment aid Insert a screwdriver in needle feed driving crank 3 it must remain still when the handwheel is turned Feed lifting motion Requirement With the stitch length set at 0 the feed dog should be at t d c when the needle bar is at a position 0 6 mm past b d c cylindr
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