Table of Contents About these service instructions ..........3 Scope of the service instructions ..........3 Representation conventions – symbols and characters ....3 Other documents ................4 Liability..................4 Safety ................... 5 Basic safety instructions ............... 5 Signal words and symbols used in warnings ........ 6 Working basis ................
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Table of Contents 10.2 Setting the loop stroke position ..........49 10.3 Setting the needle bar height............51 Sewing feet................53 11.1 Setting an even sewing foot stroke..........54 11.2 Setting the stroke movement for the feeding foot ....... 55 11.3 Setting the sewing foot pressure ..........
About these service instructions About these service instructions These instructions for sewing machine 667 was compiled with the utmost care. They contain information and notes intended to ensure long-term and reliable operation. 1.1 Scope of the service instructions The instructions describe the setting and maintenance work on the 967 sewing machine.
About these service instructions Information Additional information, e.g. on alternative operating options. Order Specifies the work to be performed before or after a setting. References Reference to another section in these instructions. Important warnings for the user of the machine are specifically marked. Safety Since safety is of particular importance, hazard symbols, levels of danger and their signal words are described separately in ...
Safety Safety This chapter contains basic information for your safety. Read the instruc- tions carefully before setting up or operating the machine. Make sure to follow the information included in the safety instructions. Failure to do so can result in serious injury and property damage. 2.1 Basic safety instructions The machine may only be used as described in these instructions.
Safety Inspect the machine for any externally visible damage during use. Operation Stop working if you notice any changes to the machine. Report any changes to your supervisor. Machines must no longer be used if they are damaged. Safety equipment should not be removed or deactivated. If it is essential Safety equipment to remove or deactivate safety equipment for a repair operation, it must be...
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Safety Symbol Type of danger Sharp parts Crushing Environmental damage Examples of the layout of warnings in the text: Examples DANGER Type and source of danger! Consequences of non-compliance. Measures for avoiding the danger. This is what a warning looks like for a hazard that will result in serious injury or even death if ignored.
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Safety CAUTION Type and source of danger! Consequences of non-compliance. Measures for avoiding the danger. This is what a warning looks like for a hazard that could result in envi- ronmental damage if ignored. NOTICE Type and source of danger! Consequences of non-compliance.
Working basis Working basis 3.1 Order of the settings The setting positions for the sewing machine are interdependent. Always comply with the order of individual setting steps as specified. It is absolutely essential that you follow all notices regarding prerequisites and subsequent settings that are marked with in the margin.
Working basis 3.3 Removing the covers WARNING Risk of injury from moving parts! Crushing possible. Switch off the machine before removing or re-placing covers. For many types of setting work, you will have to remove the machine cov- ers first in order to access the components. This chapter describes how to remove and then refit the individual covers.
Working basis 3.3.2 Removing and placing the arm cover Fig. 2: Removing and placing the arm cover ① ② ③ (1) - Screws (3) - Arm cover (2) - Left adjusting wheel for sewing foot stroke Removing the arm cover To remove the arm cover: 1.
Working basis 3.3.3 Removing and placing the head cover Fig. 3: Removing and placing the head cover ① ② (1) - Screws (2) - Head cover Removing the head cover To remove the head cover: 1. Loosen the screws (1). 2.
Working basis 3.3.4 Removing and placing the valve cover Fig. 4: Removing and placing the valve cover ① ② (1) - Screws (2) - Valve cover Removing the valve cover To remove the valve cover: 1. Loosen all 4 screws (1). 2.
Working basis 3.3.5 Removing and installing the throat plate WARNING Risk of injury from sharp and moving parts! Crushing and puncture possible. Switch off the machine before you remove or install the throat plate. Fig. 5: Removing and installing the throat plate ①...
Working basis 3.3.6 Removing and installing the feed dog WARNING Risk of injury from sharp and moving parts! Crushing and puncture possible. Switch off the machine before you remove or install the feed dog. Fig. 6: Removing and installing the feed dog ①...
Working basis 3.4 Flats on shafts Fig. 7: Flats on shafts (1) - Flat (2) - Shaft Some shafts have flat surfaces at the points where the components are screwed on. This stabilizes the connection and makes adjustment easier. Important Always ensure that the screws are completely flush with the surface.
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Working basis There are 2 securing positions: • Position 1: Loop stroke position • 5 mm end in the large slot • Setting the loop stroke and needle bar height • Position 2: Handwheel zero position • 3 mm end in the small slot •...
Working basis 3.6 Setting the handwheel into position For some settings, the graduated scale on the handwheel has to be moved to a certain position. Fig. 10: Setting the handwheel into position ① ② (1) - Graduated (2) - Marking scale To set the handwheel into position: 1.
Positioning the arm shaft Positioning the arm shaft WARNING Risk of injury from moving parts! Crushing possible. Switch off the machine before you check and set the position of the arm shaft crank. Proper setting The 3 threaded pins (3) on the arm shaft crank (1) are seated completely on the flat.
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Positioning the arm shaft Service Instructions 667 - 00.0 - 04/2016...
Setting the handwheel scale Setting the handwheel scale WARNING Risk of injury from moving parts! Crushing possible. Switch off the machine before you check and set the position of the handwheel on the arm shaft. Checking the proper setting 1. Lock the machine in place at position 2 ( p. 16). ...
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Setting the handwheel scale Service Instructions 667 - 00.0 - 04/2016...
Positioning the toothed belt wheels Positioning the toothed belt wheels The two toothed belt wheels must be positioned one on top of the other such that the toothed belt can run correctly. In machines with normal lengths, the winder wheel is directly next to the upper toothed belt wheel and determines its alignment.
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Positioning the toothed belt wheels Fig. 13: Setting the upper toothed belt wheel (1) - Upper toothed belt wheel (4) - Toothed belt (2) - Threaded pins (5) - Surface of arm shaft (3) - Winder wheel (position in machines with normal lengths) To set the upper toothed belt wheel: 1.
Positioning the toothed belt wheels 6.2 Setting the lower toothed belt wheel WARNING Risk of injury from moving parts! Crushing possible. Switch off the machine before you check and set the lower toothed belt wheel. Proper setting The 2 threaded pins for the lower toothed belt wheel are seated flush on the flat of the lower shaft.
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Positioning the toothed belt wheels Service Instructions 667 - 00.0 - 04/2016...
Setting the stitch length adjusting wheels Setting the stitch length adjusting wheels Fig. 15: Setting the stitch length adjusting wheels +/– +/– (1) - Button for the stitch length (2) - Upper stitch length adjusting wheel on the machine arm (3) - Lower stitch length adjusting wheel The 2 adjusting wheels on the machine column determine the stitch length.
Setting the stitch length adjusting wheels 7.1 Setting the upper stitch length adjusting wheel WARNING Risk of injury from moving parts! Crushing possible. Switch off the machine before you set the upper toothed belt wheel. Proper setting Upper stitch length adjusting wheel to 0: ...
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Setting the stitch length adjusting wheels NOTICE Property damage may occur! Risk of machine damage if the shaft is turned too hard. If you turn the shaft too far, parts on the stitch regulator gear may bend or get stuck. Turn the shaft carefully and stop as soon as you feel a slight resistance.
Setting the stitch length adjusting wheels Important If the plates (8) are not parallel to one another: 12. Remove the tension spring (11). 13. Loosen the screw (12). 14. Manually position the plates (9) so that they are parallel. 15. Tighten the screw (12). 16.
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Setting the stitch length adjusting wheels To set the lower stitch length adjusting wheel: 1. Position the upper stitch length adjusting wheel (2) > 3. 2. Switch the machine to short stitch length. The button for the stitch length (1) does not light up. If the button lights up, press button (1) again.
Setting the stitch length adjusting wheels 7.3 Setting the stitch length limit If not all of the stitch lengths are available during sewing operation, a limit can be placed on the maximum stitch length that can be set. WARNING Risk of injury from moving parts! Crushing possible.
Setting the stitch length adjusting wheels To set the stitch length limit: 1. Position the upper stitch length adjusting wheel (1) to 0. 2. Hold the upper stitch length adjusting wheel (1) in place using a wrench. 3. Loosen the screw (2). 4.
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Setting the stitch length adjusting wheels Fig. 21: Setting the eccentric for the forward and backward stitches (1) - Block (3) - Eccentric (2) - Threaded pin (4) - Recess To set the eccentric for forward and backward stitches: 1. Loosen the threaded pin (2). 2.
Setting the feed dog Setting the feed dog The position and the movement of the feed dog and needle bar have to be coordinated such that the needle pierces exactly in the center of the nee- dle hole of the feed dog. Order First, check the following setting: •...
Setting the feed dog 8.1.1 Moving the feed dog Cover • Throat plate ( p. 14) Fig. 22: Moving the feed dog ① ③ ② (1) - Feed dog (3) - Screws (2) - Feed dog carrier To move the feed dog: 1.
Setting the feed dog 8.1.2 Moving the feed dog carrier The feed dog carrier is connected to the stitch regulator gear via the sliding shaft, and can be moved on this shaft. Cover • Tilt the machine head ( p. 10) Fig.
Setting the feed dog 8.2 Setting the feed dog movement The feed dog moves in an elliptical cycle. To align this correctly, the feed movement and the stroke height and the stroke movement of the feed dog all have to be set. Order First, check the following setting: •...
Setting the feed dog To set the feed movement: 1. Position the upper stitch length adjusting wheel to 0. 2. Lock the machine in place at position 1. 3. Loosen the threaded pins (2) on the pusher eccentric (1). 4. Turn the pusher eccentric (1) such that the slot is in a line with the slot of the connecting rod.
Setting the feed dog 3. Loosen the threaded pins (2). 4. Turn the stroke eccentric (1) such that the upper edge of the feed dog protrudes 0.5 mm above the throat plate. 5. Move the stroke eccentric (1) to the left such that the feed dog has no play in relation to the lever (3).
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Setting the feed dog 3. Loosen the threaded pins (3). 4. Turn the stroke eccentric (1) such that the slot is in a line with the slot of the lever. 5. Tighten the threaded pins (3). Service Instructions 667 - 00.0 - 04/2016...
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Setting the feed dog Service Instructions 667 - 00.0 - 04/2016...
Aligning the needle bar linkage Aligning the needle bar linkage Order First, check the following setting: • A straight and undamaged needle must be inserted ( Operating Instructions, chap. Inserting and replacing the needle) Proper setting Position the upper and lower stitch length adjusting wheel to 0. ...
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Aligning the needle bar linkage Fig. 28: Moving the needle bar linkage sideways (2) (5) - Arm shaft crank (7) - Thread lever (6) - Threaded pins 3. Loosen both threaded pins (6) on the arm shaft crank (5). Make sure that the threaded pins stay on the surface.
Aligning the needle bar linkage 9.2 Aligning the needle bar linkage in the sewing direction WARNING Risk of injury from moving parts! Crushing possible. Switch off the machine before you check and set the position of the needle bar linkage in the sewing direction.
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Aligning the needle bar linkage Order Then check the following setting: • Loop stroke position ( p. 49) Service Instructions 667 - 00.0 - 04/2016...
Position of the hook and needle 10 Position of the hook and needle 10.1 Setting the hook side clearance WARNING Risk of injury from moving parts! Crushing possible. Switch off the machine before you check and set the hook side clearance. Order First, check the following settings: •...
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Position of the hook and needle Fig. 30: Setting the hook side clearance ④ ① ③ ② (1) - Threaded pins (3) - Hook tip (2) - Slot for screw (4) - Needle groove To set the hook side clearance: 1.
Position of the hook and needle 10.2 Setting the loop stroke position WARNING Risk of injury from sharp and moving parts! Crushing and puncture possible. Switch off the machine before you check and set the loop stroke position. The loop stroke is the path length from the lower dead center of the needle bar up to the position where the hook tip is exactly on the vertical center line of the groove for the needle.
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Position of the hook and needle Cover • Tilt the machine head ( p. 10) • Throat plate ( p. 14) • Feed dog ( p. 15) Fig. 32: Setting the loop stroke position (2) ③ ② ① (1) - Threaded pins (3) - Needle groove (2) - Hook tip To set the loop stroke position:...
Position of the hook and needle 10.3 Setting the needle bar height WARNING Risk of injury from sharp and moving parts! Crushing and puncture possible. Switch off the machine before you check and set the needle bar height. Order First, check the following settings: •...
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Position of the hook and needle 3. Loosen the screw (2) of the needle bar (1). 4. Move the height of the needle bar (1) such that the hook tip (4) is in the middle of the lower third of the groove for the needle. Important When doing so, take care not to twist the needle to the side.
Sewing feet 11 Sewing feet The two adjusting wheels (3) on the machine arm determine how high the presser foot (1) and feeding foot (2) are raised during the sewing process. The left adjusting wheel determines the normal sewing foot stroke. The right adjusting wheel determines the elevated sewing foot stroke.
Sewing feet 11.1 Setting an even sewing foot stroke WARNING Risk of injury from sharp and moving parts! Crushing and puncture possible. Switch off the machine before you check and set the sewing foot stroke. Proper setting For sewing foot stroke 3, the presser foot and feeding foot are raised by the same height.
Sewing feet 11.2 Setting the stroke movement for the feeding foot WARNING Risk of injury from sharp and moving parts! Crushing and puncture possible. Switch off the machine before you check and set the stroke movement for the feeding foot. In order to ensure a correct feed, the stroke movement for the feeding foot must be aligned to the stroke movement for the feed dog.
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Sewing feet Fig. 37: Setting the stroke movement for the feeding foot (2) (1) - Stroke eccentric (3) - Threaded pin (2) - Threaded pins Proper setting The feeding foot reaches the level of the throat plate at the same time as the following elements: •...
Sewing feet 11.3 Setting the sewing foot pressure The adjusting wheel at the top left of the machine arm determines the pressure for the sewing feet on the sewing material. The pressure can be adjusted continuously by turning the adjusting wheel. The correct pressure depends on the sewing material: •...
Sewing feet 11.4 Setting the sewing foot lifting height WARNING Risk of injury from moving parts! Crushing possible The machine must remain switched on so that the sewing feet can be raised. Work very carefully when you check and set the lifting height for the sewing feet.
Setting the needle thread tension 12 Setting the needle thread tension 12.1 Setting the needle thread regulator The needle thread regulator determines the tension applied to guide the needle thread around the hook. The required tension depends on the thickness of the sewing material, thread strength, and stitch length. Lower thread tension for •...
Setting the needle thread tension 12.2 Setting the thread tensioning spring The thread tensioning spring holds the needle thread under tension from the top dead center of the thread lever up to the point when the needle eye plunges into the sewing material. Proper setting Initial position: The thread tensioning spring does not contact the stop until the needle eye has plunged into the sewing material.
Winder 13 Winder 13.1 Setting the winder Proper setting The winder wheel runs smoothly and without axial play. The winding process will stop automatically when the required filling quan- tity of the bobbin is reached. Cover • Arm cover ( p. 11) Removing the winder Fig.
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Winder Setting the winder spacing Fig. 43: Setting the winder spacing (3) - Bobbin lever (11) - Thread-pulling knife (5) - Block (12) - Winder spindle (6) - Winder wheel (13) - Right-hand screw hole (14) - Locking disk To set the winder spacing: 1.
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Winder To set the winder run: 1. Loosen the threaded pin (8). 2. Set the switch cam (9) such that it is just contacting the leaf spring (10) when the block (5) has engaged in the locking disk. 3. Set the switch cam (9) such that the winder lever (3) has no axial play. 4.
Winder 13.2 Setting the hook thread guide The position of the hook thread guide determines how the thread is wound onto the winder. Proper setting The thread is wound on evenly over the entire width of the bobbin. Fig. 46: Setting the hook thread guide (1) - Screw (2) - Hook thread guide To set the hook thread guide:...
Thread cutter 14 Thread cutter WARNING Risk of injury from sharp and moving parts! Cutting and crushing possible. Switch off the machine before setting the thread cutter. 14.1 Setting the control cam position Fig. 47: Setting the control cam position ①...
Thread cutter 14.2 Setting the armature of the thread cutter magnet Fig. 48: Setting the armature of the thread cutter magnet ⑥ ① ② ③ ④ ⑤ (1) - Block (4) - Control cam (2) - Pull rod (5) - Armature (3) - Roller (6) - Nut Proper setting...
Thread cutter 14.3 Setting the position of the thread-pulling knife Fig. 49: Setting the position of the thread-pulling knife (1) ① ③ ② (1) - Tip (3) - Thread-pulling knife (2) - Stationary knife Fig. 50: Setting the position of the thread-pulling knife (2) ④...
Thread cutter 4. Slide the pull rod (5) to the left under slight pressure to keep the play inside the mechanics of the thread cutter at a minimum. 5. Position the block (4) with the roller (6) against the control cam. 6.
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Thread cutter Important If the cutting pressure is too high, the thread cutter magnet will not swivel out the thread-pulling knife. The thread will not be cut. To check the cutting pressure: 1. Turn the handwheel until the thread-pulling knife (2) can be swung out by hand.
Setting the potentiometer 15 Setting the potentiometer WARNING Risk of injury from moving parts! Crushing possible. Carry out all work with great caution. The potentiometer adjusts the number of stitches to the set sewing foot stroke and reduces the number of stitches if the sewing foot stroke is too much.
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Setting the potentiometer 5. Press the OK button (5). Fig. 54: Setting the potentiometer (2) (1) - Threaded pins (3) - Threaded pin for the setting shaft (2) - Connecting clamp for lifting cylinder (4) - Potentiometer 6. Check whether the lifting gear plates are flush. If the plates are not flush: 7.
Maintenance 16 Maintenance This chapter describes maintenance work that needs to be carried out on a regular basis to extend the service life of the machine and achieve the desired seam quality. WARNING Risk of injury from sharp parts! Punctures and cutting possible. Prior to any maintenance work, switch off the machine or set the machine to threading mode.
Maintenance 16.1 Cleaning 16.1.1 Cleaning the machine Lint and thread remnants should be removed after every 8 operating hours using a compressed air gun or a brush. If very fluffy sewing material is be- ing sewn the machine must be cleaned more frequently. WARNING Risk of injury from flying particles! Flying particles can enter the eyes, causing injury.
Maintenance Fig. 55: Cleaning the machine ④ ① ② ③ (1) - Area around the needle (3) - Area under the throat plate (2) - Hook (4) - Cutter on the winder Areas particularly susceptible to soiling: • Cutter on the winder for the hook thread (4) •...
Maintenance 16.2 Lubricating CAUTION Risk of injuries from contact with oil! Oil can cause a rash if it comes into contact with skin. Avoid skin contact with oil. If oil has come into contact with your skin, wash the affected areas thoroughly. NOTICE Property damage from incorrect oil! Incorrect oil types can result in damage to the machine.
Maintenance 16.2.1 Lubricating the machine head The central oil lubrication system supplies all bearing positions automati- cally with oil from the reservoir. NOTICE Machine damage possible from incorrect oil level! Too little or too much oil can cause damage to the machine. Check the oil level every day and top off the oil if necessary.
Maintenance 16.2.2 Lubricating the hook WARNING Risk of injury! Risk of crushing injuries and stab wounds from sharp and moving parts. When holding the blotting paper, make sure it does not enter the area of the hook or below the needle and the sewing foot.
Maintenance 16.3 Servicing the pneumatic system 16.3.1 Setting the operating pressure NOTICE Property damage from incorrect setting! Incorrect operating pressure can result in damage to the machine. Ensure that the machine is only used when the operating pressure is set correctly. Proper setting Refer to the Technical data (...
Maintenance 16.3.2 Draining the water condensation NOTICE Property damage from excess water! Excess water can cause damage to the machine. Drain water as required. Water condensation accumulates in the water separator (2) of the pressure controller. Proper setting Water condensation must not rise up to the level of the filter element (1). Check the water level in the water separator (2) on a daily basis.
Maintenance 16.3.3 Cleaning the filter element NOTICE Damage to the paintwork from solvent-based cleaners! Solvent-based cleaners damage the filter. Use only solvent-free substances for washing out the filter tray. Fig. 61: Cleaning the filter element ① ② ③ (1) - Filter element (3) - Drain screw (2) - Water separator To clean the filter element:...
Maintenance 16.4 Servicing specific components Checking the toothed belt WARNING Risk of injury! Crushing injuries from moving parts. Before checking the condition of the toothed belt, switch off the machine at the main switch. The condition of the toothed belt must be checked once a month. Important A damaged toothed belt must be replaced immediately.
Decommissioning 17 Decommissioning You need to perform a number of activities if the machine is to be shut down for a longer period of time or completely decommissioned. WARNING Risk of injury from a lack of care! Serious injuries may occur. ONLY clean the machine when it is switched off.
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Decommissioning Service Instructions 667 - 00.0 - 04/2016...
Disposal 18 Disposal The machine must not be disposed of in the normal household waste. The machine must be disposed of in a suitable and proper manner and in accordance with all applicable national regulations. CAUTION Risk of environmental damage from improper disposal! Improper disposal of the machine can result in serious environmental damage.
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Disposal Service Instructions 667 - 00.0 - 04/2016...
Technical data 19 Technical data Data and characteristic values Technical data Unit Class Machine type Stitch type Lockstitch 301 Hook type Horizontal hook, Xl or XXL Number of needles Needle system 134-35 Needle strength [Nm] 80-150, 100-180 Thread strength [Nm] 80/3-15/3 Stitch length [mm]...
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Technical data Service Instructions 667 - 00.0 - 04/2016...
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DÜRKOPP ADLER AG Potsdamer Str. 190 33719 Bielefeld Germany Phone: +49 (0) 521 925 00 Email: service@duerkopp-adler.com www.duerkopp-adler.com...
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