ADJUSTMENT MANUAL
Contents
1. cece ceeesseeeeeeesseeeceessseeeeseesseeseeessseeseneeaees 9 1 04 06 Lifting Motion of the bottom Teed Gog narse a R sbtebaaleertbens 10 1 04 07 Driving motion of the bottom and top fEEdS cc ceeececcccseeteececsseeeceecseseeeesentteeeesenteaees 11 1 04 08 Hook to needle clearance needle rise needle height and needle guard ee 12 1 04 09 TOPACER STOKE SP smoot tee i a tem ou Mitt we dae eile eat ot Teale a 14 1 04 10 hiting MOTION OF THE TOP TESA srra eyg e a eT nas uty a 15 1 04 11 BODDINECASE OPEN Sf dese custo tes exueieeaivsdteauduin TN ET ETE TE 16 1 04 12 Sarety Clute ae oe E ee te Oe ee de ee 17 1 04 13 Needle thread tension release ccsececcsecseecetseenestqeteeseceseceeenseesenssnnesseetenseesseussnaesepeensaseree 18 1 04 14 ETES AVe 21 Geereat career te erie ene re eR cents RDA emer or cieer menor nn Roe ee A ee 19 1 04 15 PLESSEETOOL DESB UTE orrira cinerea aden eared mora ind idol ea Raed 20 PFAFF 3 Adjustment 1 01 1 02 1 03 Adjustment Please observe all notes from Chapter 1 Safety of the instruction manual In particular care must be taken to see that all protective devices are refitted properly after adjustment see Chapter 1 06 Danger warnings of the instruction manual If not otherwise stated the machine must be disconnected from the electrical power supply Danger of injury due to unintentional starting of the machine The illustrations in this section show the PFAF2. Set the largest top feed stroke and the stitch length at 0 ZF Bring presser foot 1 to rest on the needle plate Turn the handwheel in the direction of rotation until vibrating presser foot 2 has reached its highest point Turn crank 3 screws 4 in accordance with the requirement 14 PFAFF Adjustment 1 04 10 we Lifting motion of the top feed Requirement When presser foot 1 is resting on the needle plate the vibrating presser foot 4 and the point of the needle must both reach the needle plate at the same time when the top feed stroke is set at maximum Fig 1 10 Allow presser foot 1 to rest on the needle plate Loosen screws 2 until feed lifting eccentric 3 can be turned on its shaft with difficulty Turn feed lifting eccentric 3 in accordance with the requirement Tighten screws 2 Carry out a check in accordance with the requirement PFAFF 15 Adjustment 1 04 11 Bobbin case opener On Model 1246 make these adjustments on both bobbin openers Requirement The needle thread must not be clamped between the bobbin case opener 1 and the bob bin case base 3 nor may it be clamped between projection 4 and the retaining trip of the
3. needle plate see arrows Fig 1 11 ZF Thread the machine insert test material and allow the presser foot to rest on the needle plate Sew a few stitches by turning the handwheel and carry out a check in accordance with the requirement Turn bobbin case opener 1 screw 2 in accordance with the requirement 16 PFAFF Adjustment 1 04 12 Safety clutch The safety clutch is set by the manufacturer and screws 5 are sealed If the thread jams the safety clutch snaps out to prevent damage to the hook A description of how to snap the clutch back in follows Fig 1 12 Remove the jammed thread Press piston 1 and turn the handwheel until hook 3 of pawl 2 clicks into groove 4 PFAFF 17 Adjustment 1 04 13 Needle thread tension release Requirement With the presser foot raised both of the tension discs must be at least 0 5 mm apart The clearance of 0 5 mm is a minimum and can increase to more than 1 mm when using thick threads TT NN g Fig 1 13 Mittels Handhebel den Stoffdr ckerfuR hochstellen Druckplatte 1 hinter der Spannungs Tr gerplatte 2 entprechend der Requirement richten If the tension is correct release pin 3 must not be under pressure
4. 18 PFAFF Adjustment 1 04 14 ae Bobbin winder Requirement 1 With the bobbin winder switched on the bobbin winder spindle must engage reliably 2 With the bobbin winder switched off friction wheel 5 must not touch drive wheel 1 3 The bobbin winder must switch off automatically when the thread level is approxima tely 1 mm from the edge of the bobbin QO ee EE Ho d o qO Fig 1 14 Move drive wheel 1 screws 2 in accordance with requirement 1 und 2 Move stop latch 3 screws 4 in accordance with requirement 3 PFAFF 19 Adjustment 1 04 15 Presser foot pressure Requirement The material must be fed reliably even at top sewing speed There mustn t be pressure marks on the material Fig 1 15 EF Turn screw 1 in accordance with the requirement 20 PFAFF Note y 2 Europdische Un
5. needle bar frame 7 in accordance with the requirement Tighten screws 3 4 and 5 Position stop 8 so that it is touching needle bar frame 7 and tighten screw 6 The movement of needle bar frame 7 in guide 9 and of the top feed drive bars must not be stiff PFAFF 9 Adjustment 1 04 06 Lifting motion of the bottom feed dog This adjustment does not apply for machines without a bottom feed lifting phase without P Requirement 1 With the needle bar at its BDC the bottom feed dog must be at its TDC 2 With the longest stitch set the bottom feed dog must reach the top surface of the needle plate at the same time as the needle point when the handwheel is turned Fig 1 06 Bring the needle bar to its BDC Turn feed lifting eccentric 1 screws 2 in accordance with requirement 1 In this position tighten the accessible screw 2 until feed lifting eccentric 1 can be turned with difficulty Turn feed lifting eccentric 1 a little further in accordance with requirement 2 Tighten both screws 2 10 PFAFF Adjustment 1 04 07 Driving motion of the bottom and top feeds Requirement With the longest stitch length set and the needle bar at its BDC the top and bottom feeds should
6. not move when the reverse feed lever is activated Fig 1 07 a Tk O Set the longest stitch Loosen screws 1 just far enough so that the feed driving eccentric 2 can be turned on the shaft with difficulty Bring the needle bar to its BDC Turn the feed driving eccentric 2 so that its eccentricity is facing downwards Now turn it a little in the direction of rotation in accordance with the requirement In this position tighten screws 1 Carry out a check in accordance with the requirement PFAFF 11 Adjustment 1 04 08 Hook to needle clearance needle rise needle height and needle guard On Model 1246 make these adjustments on both sewing hooks Requirement When the stitch length is set at 3 and with the needle rise position set see table 1 the hook point must be at needle centre with a hook to needle clearance of 0 05 to 0 1 mm 2 the top of the needle eye must be 0 8 1 0 mm below the hook point 3 and needle guard 5 must touch the needle just lightly Needle rise position I Model C 2 0 mm after b d c off the needle bar Fig 1 08 Set stitch length
7. 3 and loosen screws 1 2 and 3 Bring the needle to its BDC and slide the appropriate feeler gauge under the needle bar bearing Position the adjustable clamp against the feeler gauge and screw it tight Remove the feeler gauge and turn the balance wheel in its direction of rotation until the adjustable clamp is touching the needle bar bearing 12 PFAFF Adjustment Fig 1 08 Move hook bearing 4 in accordance with requirement 1 Tighten screws 1 Position the hook point at the needle centre taking care to ensure that the needle is not deflected by needle guard 5 While ensuring that bevel gear 6 is not too close and that the hook does not have too much play tighten screws 2 Position retaining collar 7 so that it rests on bevel gear 6 and tighten screws 3 Adjust the needle height in accordance with requirement 2 Align needle guard 5 in accordance with requirement 3 PFAFF 13 Adjustment 1 04 09 Top feed stroke Requirement At the largest top feed stroke setting and stitch length 0 presser foot 1 and vibrating presser foot 2 must lift 70 mm from the needle plate when the handwheel is turned Fig 1 09
8. F 1245 single needle machine For the PFAFF 1246 two needle machine various adjustments must be made twice i e to the left and right hand sewing hooks This will be pointed out in the respective sections whereby it is often possible to apply the mirror image of the illustrations e Notes on adjustment All following adjustments are based on a fully assembled machine and may only be carried out by expert staff trained for this purpose Machine covers which have to be removed and replaced to carry out checks and adjust ments are not mentioned in the text The order of the following chapters corresponds to the most logical work sequence for machines which have to be completely adjusted If only specific individual work steps are carried out both the preceding and following chapters must be observed Screws nuts indicated in brackets are fastenings for machine parts which must be loosened before adjustment and tightened again afterwards Tools gauges and other accessories for adjusting Screwdrivers withi blade widths from 2 to 10 mm Spanners wrenches in sizes from 7 to 14 mm Allen keys from 1 5 to 6 mm Metal rule part No 08 880 218 00 Needle rise gauge part No 61 111 600 01 Gauge top feed stroke 7 mm Part No 61 111 633 61 Screw clamp part No 61 111 600 35 Abbreviations t d c top dead centre b d c bottom dead centre Explanation of the symbols In this adjustment manual symbols emphasize operat
9. PFAFF 1245 1246 ADJUSTMENT MANUAL This adjustment manual applies to machines from the following serial numbers onwards 6500 124 gt 296 12 19 200 002 Justieranleitung engl 01 12 The reprinting copying or translation of PFAFF Instruction Manuals whether in whole or in part is only permitted with our previous authorization and with written reference to the source PFAFF Industriesysteme und Maschinen AG Hans GeigerStr 12 IG Nord D 67661 Kaiserslautern CONTENTS eae a tec se S Page 1 Adjustments later Mica eee hate el te ae dened twee 4 1 01 Tools gauges and other accessories for ACjUSTING ccceecccccccteeececstteeeeeeeseeeeesseseeeeeseaea 4 1 02 PRS SFU Sethe etc ks ecg tae etal aN etn Marla Meal ak Mie ta a edly ama serge 4 1 03 Explanation othe symbol Sauessa acter tec dahetle ate cette Aee ech uments ANTE 4 1 04 Adjusting the basic MACHING ccccc cece ccccesecsccseecetceesceeeeeeceesceeesseceecsseeesessecseessectenseeeeeees 5 1 04 01 Positioning the feed dog across the direction Of SEWING ccccccccccccccceeceessesseeeeeeeeeeeeecneentees 5 1 04 02 Positioning the feed dog in the direction Of SEWING cccccececceceseseceeceeeeeeeessnseeesentsaeeees 6 1 04 03 Height of the bottom feed dog 1 35ete ho ce hict anc ei alt eee enna tae ela rae Oe Cet 7 1 04 04 Pre adjusting the needle height nres anini eea e a orep T E E Eaa iaee i a Enba 8 1 04 05 Centering the needle in the needle Nole
10. at TDC Fig 1 03 Set stitch length 0 Bring the bottom feed dog to its TDC by turning the handwheel Adjust feed dog carrier 1 screws 2 in accordance with the requirement If required the feed dog height can be reduced a little on machines without a bottom feed lifting phase without P PFAFF 7 Adjustment 1 04 04 Pre adjusting the needle height Requirement With the needle bar at BDC the distance between the needle bar and the needle plate must be 15 mm Fig 1 04 Move needle bar 1 screw 2 in accordance with the requirement without moving it laterally 8 PFAFF Adjustment 1 04 05 Centering the needle in the needle hole Requirement With the stitch length set at 0 the needle must enter the needle hole exactly in the middle Fig 1 05 Unscrew vibrating presser 1 and presser foot 2 Set stitch length 0 and bring the needle bar to its TDC Insert a new needle Loosen screws 3 4 5 and 6 Position the needle directly over the bottom feed dog by turning the handwheel Move
11. ion Wachstum durch Innovation EFRE PFAFF PFAFF Industriesysteme und Maschinen AG Hans Geiger Str 12 IG Nord D 67661 Kaiserslautern Phone 49 6301 3205 0 Fax 49 6301 3205 1386 E mail info pfaff industrial com Hotlines Technical service 49 175 2243 101 Application consultance 49 175 2243 102 Spare parts hotline 49 175 2243 103 Printed in Germany 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
12. ions to be carried out or important in formation The symbols used have the following meaning Note information Service repair adjustment maintenance work to be carried out by qualified staff only PFAFF Adjustment 1 04 Adjusting the basic machine 1 04 01 Positioning the feed dog across the direction of sewing Requirement The bottom feed dog must be the same distance from the left and right side of the need le plate cutout Fig 1 01 Loosen screws 1 and 2 Laterally align rock shaft 3 in accordance with the requirement Now tighten screws 1 The flat sides of pins 4 must be opposite the flat sides of screws 1 and rock shaft 3 must exhibit neither play nor stiffness Screws 2 remain loose for the following adjustments PFAFF 5 Adjustment 1 04 02 Positioning the feed dog in the direction of sewing Requirement With the longest stitch set the bottom feed dog must have the same clearance the front and the back with respect to the needle plate cutout when feeding both forwards and backwards Fig 1 02 Set the longest stitch Adjust rock shaft 1 in accordance with the requirement and tighten screws 2 6 PFAFF Adjustment 1 04 03 Height of the bottom feed dog Requirement With the stitch length set at 0 the bottom feed dog must protrude over the needle plate as high as the teeth when
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