Service Manual for the series 480, 560 and 950
Contents
1. Fig 2 02 PF Unscrew screws 1 and 2 Put pressure on rockshaft 3 to the right Adjust roller lever 4 in accordance with requirements 1 and 2 Tighten screw 1 firmly Position the surface of the fixing collar 5 bolt 6 parallel to the base plate CO Il Screw 2 stays undone for the following adjustment 2 3 PFAFF Adjustment 2 07 Pawl Requirement With the thread trimmer in resting position the distance between pawl 2 and the highest point of the control cam should be 0 3 mm Fig 2 03 Position the bearing surface of control cam 1 with its highest point below paw 2 by turning the hand wheel Shift pin 3 Screw 4 in accordance with the requirement PFAFF 2 4 Adjustment 2 08 Engaging solenoid Requirement When the needle bar is positioned 1 8 mm after the b d c and the engaging solenoid is actuated the distance between the engaging lever 1 and the paw 2 should be between 0 2 and0 3 mm ao2. Fig 2 04 Position the needle bar 1 8 mm after b d c Manipulate engaging lever 1 until pawl 2 engages Push magneto inductor into the magnet housing 3 as far as possiblt and move magnet housing 3 screw 4 together with the magneto inductor in accordance with the requirement 2 5 PFAFF Adjustment 2 09 Release lever Requirement When the needle bar is positioned 1 8 mm after the b d c and the engaging lever 1 is actuated the distance between the roller of the roller lever 2 and the bottom of the control cam 3 must be approx 0 2 mm 090 mea GL WU trag Fig 2 05 Position needle bar 1 8 mm after b d c ZF Activate engaging lever 1 manually Push roller lever 2 onto the bottom of control cam 3 Tighten screw 5 slightly Push release lever 4 onto engaging lever 1 Adjust the distance to control cam 3 to approx 0 2 mm by tapping the roller lever 2 and measuring repeatedly with lever 4 which must be in constant lateral contact with roller lever 2 Tighten screw 5 firmly PFAFF 2 6 Adjustment 2 10 Engaging lever Requirement When the needle bar is at the t d
3. Adjustment 2 19 Mounting and dismounting the control unit 7 U 09 ANS Goi Fig 2 14 In order to dismount the control unit pull plug 1 out of the socket of the motor control plate or the control box as applicable Loosen screw 2 and remove linkage 3 from its slot Remove connecting rod 4 Loosen screws 5 and take off complete control unit In order to mount the control unit position the needle bar at t d c Put the control unit back on and tighten screws 5 slightly Activate engaging lever 6 manually so that roller lever 7 engages with control cam 8 Align the control unit so that the roller of roller lever 7 is centred in the cam notch 8 Tighten screws 5 firmly Replace connecting rod 4 and linkage 3 and tighten screws 2 firmly Plug in plug 1 Check performance manually If engaging lever 6 is not released repeat adjustment of control unit PFAFF OS PFAFF G M PFAFF Aktiengesellschaft Postfach 3020 D 67653 Kaiserslautern K nigstr 154 D 67655 Kaiserslautern Telefon 0631 200 0 Telefax 0631 172 02 Telex 45753 PFAFF D Gedruckt in der BRD Printed in Germany Imprim en R F A Impreso en la R
4. highest point of the release cone 1 the tension disks When the thread trimming unit is in resting position trip 5 should be engaged and at a distance of 0 5 mm from the release cone 1 should be spaced at a mimimum of 0 5 mm from each other Fig 2 13 Tum release cone 1 nut 2 in accordance with requirement 1 Lower the presser foot onto the needle plate Pull out the thread from between the tension disks Pull down linkage 3 screw 4 until you feel it stop Position the needle bar at b d c and activate the engaging lever manually Turn the hand wheel until trip 5 is positioned at the highest point of release cone 1 The tension disks now have to be spaced at a minimum of 0 5 mm from each other Bring the rock shaft back to its starting position by turning the hand wheel Trip 5 now must be engaged the needle thread must be under full tension Grease release cone 1 slightly PFAFF Adjustment 2 18 Positioner Requirements 1 When sewing is interrupted the machine should position itself 4 to 5 mm after the b d c of the needle bar 2 After trimming the machine should position itself at the t d c of the take up lever Adjustments to be carried out in accordance with the instruction manual of the motor 2 15 PFAFF
5. of the thread Catcher 2 9 2 13 Re adjusting the Control cam AANEREN 2 10 2 14 Retaining Spring ME 2 11 2 15 Knife to needle dearamce uk 2 12 2 16 EE een check seasea earair aa eir aee eei 2 13 2 17 Tension release of needle thread AANEREN 2 14 2 18 BEE eege Eege 2 15 2 19 Mounting and dismounting the Control unit 2 0 2 0 eeeeeeeceeeeeeeeceeeeeeeeeeeeteeeenaeetaaes 2 16 PFAFF Safety 1 Safety 1 01 General notes on safety This machine must only be operated by adequately trained operators and only after having completely read and understood the Instruction Manual All Notes on Safety and Instruction Manuals of the motor manufacturer are to be read before operating the machine The Danger and Safety Instructions on the machine itself are to be followed The machine must be used only for the purpose for which it is intended and must not be operated without its safety devices Observe all relevant safety regulations When exchanging sewing tools e g needle presser foot needle plate feed dog and bobbin when threading when the workplace is left unattended and during servicing the machine must be disconnected from the mains by switching off the on off switch or by removing the plug from the mains Daily servicing work must be carried out only by appropriately trained persons Repairs and special maintenance work must only be carried out by technicians or persons with appropriate training For serv
6. the hand wheel until the distance between the end of hook plate 1 and the middle of the lug of the bobbin case position finger 2 is 2 mm Tum control cam 3 screws 4 in accordance with the requirement and bring it into contact with fixing collar 5 PFAFF 2 10 Adjustment 2 14 Retaining spring Requirement When the thread trimmer is in resting position the distance between the retaining spring 1 and the roller lever 3 should be 0 5 mm Ee CE wens es emma Samed EE Es Ee E oo E E Ee a Ee SE E Ke kee J e r aes G gt a wo LA Fig 2 10 PF Position retaining spring 1 together with the cover disk Tighten screws 2 sligthly Push retaining screw 1 up to the stop and adjust in accordance with the requirement Tighten screws 2 firmly 2 11 PFAFF Adjustment 2 15 Knife to needle clearance Requirement The distance between the front edge of the knife 1 and the needle should be 4 mm Fig 2 11 On needle feed machines set the stitch length to O Position the needle bar at b d c Push knife 1 under the safety plate and align in accordance with the requirement Tight
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8. PFAFF 900 51 900 57 Service Manual for the series 480 560 and 950 296 12 17 607 J ustieranleitung dtsch 06 95 At the time of printing all information and illustrations contained in this document were up to date Subject to alteration The reprinting copying or translation of PFAFF Service Manuals whether in whole or in part is only permitted with our previous agreement and with written reference to the source G M PFAFF Aktiengesellschaft Postfach 3020 D 67653 Kaiserslautern K nigstr 154 D 67655 Kaiserslautem Editing Illustration HAAS Publikationen GmbH D 53840 Troisdorf Table of Contents Contents eege Chapter Page 1 EE Ee 1 1 1 01 General notes iON EE 1 1 1 02 Safety SY ONIONS sissioni sanaiadi eaaa aaa aae aaa aaa rao Eta i 2 1 03 n iiaae apa e ea ea tuba aeaa aa aaa 1 2 2 Elle aT Ree A E dee ones E deeg E E E E E 2 1 2 01 Notes on the Service manual ui 2 1 2 02 Tools gauges and other accessories ceeeeceeeeeeeceee cence eeeeeeeeeeeaeeteaeetaaesteeeeeneeneaees 2 1 2 03 ee 2 1 2 04 Work INOS asaan e a a e E E p a r ae AEE a aa 2 1 2 05 Pre adjusting the Control CAM pisn rianais anaiena naa ananena a paa RANIG 2 2 2 06 Roller lever serar a e A a as eae i 2 3 2 07 aa ace Scar E A A T EEA 2 4 2 08 Engaging Solenoid D 2 5 2 09 GET 2 6 2 10 Engaging levei saen e E ae Ra aei aa aee E aei eea a SEER 2 7 2 11 Lateral adjustment of the thread Catcher 2 8 2 12 Front reversal point
9. c and the thread trimmer is in resting position the distance between the roller of the roller lever 3 and the outer diameter of the control cam 4 should be between 0 3 and0 5 mm E CH D LULLLLLLLLLLLLLLLLLLLLLLLLUT o f ei de SE Fig 2 06 Turn screw 1 nut 2 in accordance with the requirement Check distance in accordance with the requirement 2 7 PFAFF Adjustment 2 11 Lateral adjusting of the thread catcher Requirement 1 The tip of the thread catcher 6 should point exactly to the middle of the needle 2 The thread catcher 6 should not touch anywhere when in motion Fig 2 07 Unscrew needle plate and feed dog Loosen screw 1 and remove knife 2 Position needle bar at b d c Push aside catcher stop 3 screws 4 Loosen screws 5 Position the tip of thread catcher 6 in front of the needle by moving the thread catcher carrier Adjust thread catcher 6 laterally in accordance with requirement 1 Tighten screws 5 firmly ensuring that the back of the thread catcher is horizontal Needle plate feed dog knife 2 and catcher stop 3 stay dismantled for the following adjustments PFAFF 2 8 Adjustment 2 12 Front reversal po
10. en screw 2 slightly Activate the engaging lever manually Tur the hand wheel until the cutting point in the thread catcher is positioned immediately in front of the knife blade Adjust knife 1 so that the right edge of the knife does not protrude over the right edge of the thread catcher see arrow Tighten screw 2 firmly PFAFF 2 12 Adjustment 2 16 Manual trimming control Requirement Both threads have to be cut perfectly in the catcher cutout on both right and left hand side Fig 2 12 Position the needle bar at b d c and activate the engaging lever manually Turn the hand wheel until thread catcher 1 is its front reversal point Double a thread and insert it into the cutout of thread catcher 1 Tum the hand wheel further until the trimming process is finished If both threads are not trimmed in accordance with the requirement loosen screws 2 and align thread catcher 1 with respect to knife 3 Make sure that the tip of the thread catcher is pointing to the centre of the needle and tighten screws 2 firmly Move catcher stop 4 onto thread catcher 1 and tighten screws 5 firmly Screw on feed dog and needle plate making sure that the movement of the feed dog in the needle plate cutout is not restricted PFAFF Adjustment 2 17 Tension release of needle thread Requirements 1 When trip 5 is positioned at the
11. ice or repair work on pneumatic systems the machine must be disconnected from the compressed air supply The only exceptions to this are adjustments and function checks made by appropriately trained personnel Work on the electrical equipment must be carried out only by electricians or appropriately trained personnel Work is not permitted on parts and equipment which are connected to the power supply Exceptions to this are contained in the regulations EN 50110 Modifications and alterations to the machine must only be carried out under observance of all the relevant safety regulations Only spare parts which have been approved by us are to be used for repairs We expressly point out that any replacement parts or accessories which are not supplied by us have not been tested and approved by us The installation and or use of any such products can lead to negative changes in the structural characteristics of the machine We shall not be liable for any damage which may be caused by non original parts 1 1 PFAFF Safety 1 02 1 03 Safety symbols Danger Points to be observed AN Danger of injury to operating and specialist personnel Danger Do not reach into the sewing area while sewing Danger of injury caused by needle out adjusting work Objects can become jammed or be slung away Danger Do not leave any objects on the table or near the needle plate while carrying A of injury Use both hands when return
12. ing the machine to an upright position In order to adjust this device the machine must be tilted to the back A Danger of crushing between sewing head and table top PFAFF Adjustment 2 Adjustment Please observe the safety instructions of this service manual as and the notes on safety in the instruction manual before carrying out any maintenance or adjustment work On the 480 series no c clamps may be attached to the needle bar as this would damage the special coating on the needle bar Refer to the motor manufacturer s instruction manual for the setting of the cutting torque 180 min gt D 2 01 Notes on the service manual All adjustments in this servicing manual apply to a fully assembled machine Covers on the machine which have to be removed and replaced for checking and adjustment work are not mentioned in the text Screws and nuts mentioned in brackets are to be loosened before making an adjustment and tightened again when the adjustment is complete 2 02 Tools gauges and other accessories Screw drivers with blade widths from 2 to 10 mm Wrenches with jaw widths from 7 to 14 mm Allan keys from 1 5 to 6 mm Metal rule part no 08 880 218 00 Rig pin diameter 5 mm part no 13 030 341 05 Clearance control device Sewing thread 2 03 Abbreviations t d c top dead centre b d c bottom dead centre 2 04 Work symbols CO i Note information Servicing repair adjusting maintena
13. int of the thread catcher Requirement In the front reversal point of the thread catcher 3 the rear edge of thread catcher cutout should be 1 mm in front of the bobbin case position finger 4 S ASSA S Fig 2 08 Push balls of the connecting rod 1 onto the ball pins on the cutting and control units EF Loosen nuts 2 right hand and left hand thread Position needle bar at t d c Activate the engaging lever manually Bring thread catcher 3 to its front point of reversal by turning the hand wheel Tum connecting rod 1 in accordance with the requirement Lock connecting rod 1 by means of nuts 2 2 9 PFAFF Adjustment 2 13 Re adjusting the control cam Requirement When the end of the hook plate 1 is positioned 2 mm behind the middle of the lug of the bobbin case position finger the distance between the tip of the thread catcher 6 and the middle of the lug should also be 2 mm GG D 9 0 ul aa Fig 2 09 Position the needle bar at b d c EF Activate the engaging lever manually Tum
14. nce 2 1 PFAFF Adjustment 2 05 Pre adjusting the control cam Requirements At the t d c of the needle bar 1 the beginning of the highest point of the trip of the control cam 6 sould be positioned under the tip of paw 8 and 2 the right hand side of the trip should be flush with the right hand side of pawl 8 LL Ee Fig 2 01 Pull the ball heads of connecting rod 1 off the ball pin at the cutting and control units OF and remove connecting rod 1 Loosen screws 2 and retaining spring 3 together with the cover disk Loosen screws 4 and 5 Twist or shift control cam 6 in accordance with requirement 1 or requirement 2 as required Tighten screws 4 firmly Push fixing collar 7 onto control cam 6 Tighten screws 5 firmly O Connecting rod 1 and retaining spring 3 stay dismantled for further adjustments PFAFF 2 2 Adjustment 2 06 Roller lever Requirements When the needle bar is positioned 1 8 mm after the b d c 1 the roller of the roller lever 4 should engage easily with the control cam 7 and 2 the roller of roller lever 4 should be centred in the cam notch of the control cam 7 Ti L Mitt E UO
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