Related Manuals for Pfaff 910 Series
Summary of Contents for Pfaff 910 Series
- Page 1 -900/51 Service Manual for the series 910 and 930 296-12-18 210 Justieranleitung engl. 11.98...
- Page 2 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.
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Page 3: Table Of Contents
Table of Contents Contents ................Chapter - Page Safety ........................1 - 1 General notes on safety ..................... Safety symbols ......................1 - 2 Danger ........................1 - 2 Adjustment ....................... 2 - 1 Notes on adjusting ..................... 2 - 1 Tools, gauges and other accessories ................. -
Page 4: Safety
Safety Safety 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... -
Page 5: Danger
Safety Safety symbols Danger! Points to be observed. Danger of injury to operating and specialist personnel! Danger Do not reach into the sewing area while sewing! Danger of injury caused by needle! Do not leave any objects on the table or near the needle plate while carrying out adjusting work. -
Page 6: Adjustment
Adjustment Adjustment On the PFAFF 918, 937, 938 and 939 no c-clamps may be attached to the needle bar as this would damage the special coating on the needle bar. Notes on adjusting All adjustments in these adjustment instructions are based on a completely assembled machine and must only be carried out by trained specialists. -
Page 7: Check And Adjustment Aid
Adjustment Check and adjustment aid By blocking with holes 1 - 4 the required needle bar positions can be fixed exactly. Fig. 2 - 01 Turn the balance wheel until the needle bar has approximately reached the required position. Place the 5 mm blocking pin in the appropriate hole and put pressure on it. Turn the balance wheel forwards and backwards a little until the blocking pin moves into the slot in the crank behind the bearing plate, thus blocking the machine. -
Page 8: Pre-Adjusting The Control Cam
Adjustment Pre-adjusting the control cam Requirement With the needle bar at tdc (hole 2): 1. the beginning of the highest point of the lobe of control cam 1 must be underneath the point of pawl 2, 2. the right hand side of the lobe must be flush with pawl 2. 837-14-44 Fig. -
Page 9: Roller Lever
Adjustment Roller lever Requirement With the needle bar 2.0 past bdc (hole 1): 1. the roller of roller lever 1 must fall lightly into control cam 2 when roller lever 1 is lightly tapped Fig. 2 - 03 37-14-45 Loosen screws 3 and 4. Put pressure on rock shaft 5 to the right. -
Page 10: Pawl
Adjustment Pawl Requirement With the thread trimmer in resting position there must be a clearance of 0.3 mm between pawl 1 and the largest eccentricity of the lobe on control cam 2. 0.3 mm 37-14-46 Fig. 2 - 04 Position the largest eccentricity of the lobe on control cam 2 underneath pawl 1. Loosen screw 4. -
Page 11: Engaging Solenoid
Adjustment Engaging solenoid Requirement With the needle bar 2.0 past bdc (hole 1) there must be a clearance of 0.2 to 0.3 mm between engaging lever 2 and pawl 1 when the engaging solenoid is active. 37 14 47 Fig. 2 - 05 Position the needle bar 2.0 after bdc (hole 1). -
Page 12: Release Lever
Adjustment Release lever Requirement With the needle bar 2.0 after bdc (hole 1) there must be a clearance of 0.2 mm between the roller of roller lever 1 and the base of control cam 2 with the engaging lever active. 0.2 mm 837-14-48 Fig. -
Page 13: Engaging Lever
Adjustment Engaging lever Requirement With the needle bar at tdc and the thread trimmer in resting position, there must be a clearance of 0.3 to 0.5 mm between the roller of roller lever 1 and the external diameter of control cam 2. 0.3 - 0.5 mm 4-49 Fig. -
Page 14: Thread Catcher Position And Cutting Test
Adjustment Thread catcher position and cutting test Requirement With the thread trimmer in resting position the edge of thread trimmer 1 must be flush with the edge of bracket 2. 14-50 Fig. 2 - 08 Loosen nuts 4 (left and right-handed threads). Turn connecting rod 3 in accordance with the requirement and tighten nuts 4. -
Page 15: Control Cam (Final Adjustment) And Retaining Spring
Adjustment Control cam (final adjustment) and retaining spring Requirement 1. with the end of thread guard 1 at the height of the right edge of bobbin case position finger 2, thread catcher 3 must begin its forwards movement. 2. With the thread trimmer in resting position there must be a clearance of 0.5 mm between retaining spring 7 and roller lever 8. -
Page 16: Needle Thread Tension Release
Adjustment Needle thread tension release Requirement 1. With hand lever 4 raised, the clearance between the tension disks must be 0.5 mm. 2. With the rock shaft 6 in its neutral position there must be a clearance of 0.5 mm between trip 8 and release cone 9. - Page 17 Adjustment Loosen nut 7. Adjust the clearance between trip 8 and release cone 9 in accordance with requirement 2. Tighten nut 7. Position the feed dog underneath the needle plate and bring the presser foot to rest on the needle plate. Press clamp piece 10 upwards.
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Page 18: Removing And Refitting Control Unit
Adjustment Removing and refitting control unit Fig. 2 - 11 To remove the control unit, pull plug 1 out of the socket of the motor control plate or the control box. Remove circlip 2 and disconnect connecting rod 3. Disconnect the ball joints of connecting rod 7 from the studs on the cutting and control unit and remove the complete control unit. -
Page 19: Synchronizer
Adjustment Synchronizer Requirement 1. When sewing is stopped, the machine must position approx. 4 - 5 mm past the bdc of the needle bar. 2. After trimming the thread the machine must position at the tdc of the take up lever. For adjustment see the instruction manual of the motor manufacturer. - Page 20 G.M. PFAFF Aktiengesellschaft Postfach 3020 D-67653 Kaiserslautern Königstr. 154 D-67655 Kaiserslautern Telefon: (0631) 200-0 Telefax: (0631) 172 02 Telex: 45753 PFAFF D Gedruckt in der BRD Printed in Germany Imprimé en R.F.A. Impreso en la R.F.A.