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DURKOPPP ADLER 175 Service Instructions Manual

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175-179
Service Instructions

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Summary of Contents for DURKOPPP ADLER 175

  • Page 1 175-179 Service Instructions...
  • Page 2 All rights reserved. Property of Dürkopp Adler AG and protected by copyright. Any reuse of these contents, including extracts, is prohibited without the written approval in advance of Dürkopp Adler AG. Copyright © Dürkopp Adler AG - 2014...

  • Page 3: Table Of Contents

    4.5.2 Removing and fitting the head cover .......... 12 4.5.3 Removing and fitting the arm cover ..........12 4.5.4 Removing and fitting the covers on the base plate (175, 176) ... 13 4.5.5 Removing and fitting the cover on the base plate (179) ..... 14 4.5.6 Removing and inserting the throat plate ........
  • Page 4 Stroke setting of the top feed foot (175, 179) ......80 18.3.1 Time of the stroke motion of the top feed foot ......80 18.3.2 Stroke height of the top feed foot (175, 179) ......81 18.3.3 Position of the top feed foot (175, 179)........84 Retention spring on the looper (175, 176) ......

  • Page 5: General Information

    1.1 Scope of application of the instructions These instructions describe setting and maintenance work on the special sewing machines 175, 176 and 179. They apply to all subclasses. The  Operating Instructions describe the intended use and the set-up. 1.2 Declaration of conformity The machine complies with the European regulations specified in the declaration of conformity or in the installation declaration.
  • Page 6 General information • Unauthorized modifications to the machine • The deployment of untrained personnel • Damage during transport • Using unapproved spare parts Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 7: Safety Instructions

    Safety equipment may not be removed or put out of service. If this cannot be avoided for a repair or service operation, the safety equipment must be refitted and put back into service immediately afterward. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 8: Layout Of Safety Instructions

    Consequences in the event of noncompliance Measures for avoiding the danger This is what a hazard note looks like for a hazard that will result in serious injury or even death if not complied with. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 9 Type and source of the danger Consequences in the event of noncompliance Measures for avoiding the danger This is what a hazard note looks like for a hazard that could result in material damage if not complied with. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 10: Environmental Hazard Notes

    Consequences in the event of noncompliance Measures for avoiding the danger This is what an environmental hazard note looks like for a hazard that could result in environmental damage if not complied with. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 11: Work Fundamentals

    Indicates that special attention must be paid to this point when performing a step. Information Provides additional information. Sequence Specifies the work to be performed before or after a setting. Reference  A reference is provided to another place in the text. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 12: Sequence Of Settings

    As soon as the screws are loosened such that the cover can be detached, you can remove the cover. The screws remain either in the housing or in the cover. In the text, such screws are marked with the addition (safety cover). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 13: Removing Covers

    1. Tilt the upper part of the machine (2) back to the support (1). Straightening up the upper part of the machine 2. Carefully tilt the upper part of the machine (2) forward to its upright position. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 14: Removing And Fitting The Head Cover

    Fig. 3: Removing and fitting the arm cover (1) - Screws (2) - Arm cover Removing the arm cover 1. Unscrew all three screws (1) on the arm cover. 2. Remove the arm cover (2). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 15: Removing And Fitting The Covers On The Base Plate (175, 176)

    1. Fit the arm cover (2). 2. Tighten all three screws (1) on the arm cover. 4.5.4 Removing and fitting the covers on the base plate (175, 176) Fig. 4: Removing and fitting the covers on the base plate (1) - Cover, left...

  • Page 16: Removing And Fitting The Cover On The Base Plate (179)

    3. Lift the cover (2) and remove to the front. Fitting the cover 1. Lift and lock the sewing foot. 2. Fit the cover (2) from the front. 3. Tighten both screws (1). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 17: Removing And Inserting The Throat Plate

    2. Unscrew both screws (1). 3. Remove the throat plate (2) upwards. Inserting the throat plate 1. Lift and lock the sewing foot. 2. Insert the throat plate (2) from above. 3. Tighten both screws (1). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 18: Removing And Inserting The Feed Pincers And Sewing Foot

    1. Lift and lock the sewing foot. 2. Fit the sewing foot (4). 3. Secure the sewing foot with screw (1). Inserting the feed pincers 1. Insert the feed pincers (3). 2. Secure the feed pincers with screw (2). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 19: Removing And Installing The Feeds

    2. Secure the feed with screw (1). Installing the feeds (176) 1. Install the main feed (1). 2. Secure the feed with screw (1). 3. Install the differential feed. 4. Secure the differential feed with screw. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 20: Removing And Fitting The Oil Pan (175, 176)

    Work fundamentals 4.5.9 Removing and fitting the oil pan (175, 176) Fig. 9: Removing and fitting the oil pan (1) - Screws (2) - Oil pan Removing the oil pan 1. Unscrew the four screws (1). 2. Remove the oil pan (2) downwards.

  • Page 21: Removing And Fitting The Oil Pan (179)

    Removing the oil pan 1. Unscrew the screw (1). 2. Remove the oil pan (2) downwards. Fitting the oil pan 1. Fit the oil pan (2). 2. Secure the oil pan by tightening the screw (1). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 22: Removing And Fitting The Upper Belt Guard

    1. Fit the belt guard (3). 2. Secure the belt guard by tightening the four screws (4). Fitting the handwheel 1. Fit the handwheel (2). 2. Secure the handwheel by tightening the three screws (1). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 23: Removing And Fitting The Lower Belt Guard

    1. Unscrew both screws (1). 2. Remove the belt guard (2) to the right. Fitting the belt guard 1. Fit the belt guard (2). 2. Secure the belt guard with both screws (1). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 24: Removing Disruptive Components

    The following is a description of how to remove and re-install the thread cutting device, needle protection, looper and looper mounting. 4.6.1 Removing and installing the thread cutting device (175, 176) Fig. 13: Removing the thread cutting device. (1) - Screw...
  • Page 25 4. Secure the blade to the thread cutter with the screw (1). Sequence After removing the thread cutter, you must make the following settings: • Thread cutter setting ( Section 22.1, pg. 90) Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 26 2. Carefully remove the support plate (1) with mechanics and cylinder (2). Installing the support plate 1. Carefully fit the support plate (1) with mechanics and cylinder (2). 2. Secure the support plate with both screws (3). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 27: Removing And Installing The Thread Cutting Device (179)

    2. Carefully remove the support plate (1) with mechanics and cylinder (2). Installing the support plate 1. Carefully fit the support plate (1) with mechanics and cylinder (2). 2. Secure the support plate with the screws (3). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 28: Removing And Installing The Needle Protection

    2. Secure the needle protection by tightening the two screws (2). Sequence After removing the needle protection, you must make the following setting: • Setting the needle protection ( Section 14, pg. 61) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 29: Removing And Installing The Looper And Looper Mounting

    After removing the looper and the looper mounting, you must perform the following setting: • Looping stroke and looper gauge ( Section 13.1, pg. 57) • Needle protection ( Section 14, pg. 61) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 30: Flat Surfaces On Shafts

    (2), this means that the corresponding groove on the arm shaft crank (4) is under the opening for the locking pin (1). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 31 • 1st screw of the top feed stroke cam in the direction of rotation aligned with grooves of the pull rod. • Stroke setting of the top feed foot Fig. 21: Locking the sewing machine (1) - Locking opening (3) - Marking (2) - Locking pin Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 32 The numbers on the handwheel serve for general orientation. In order to hit the groove precisely, you may have to turn the handwheel slightly. Canceling the lock 1. Pull out the locking pin (2). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 33: Gauge And Key Set

    (ellipsis width) of the looper drive. If you have your own dial gauge, only the clamping sleeve 171 984 and measuring pin 933 748 are required. 0171 290010 Slant of the looper of 89° 30’ Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 34 Gauge and key set Order Gauge Setting number 0933 080192 Even looper movement for symmetry 0933 000740 Height of the thread take-up disk 0271 000767 Height of the feed Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 35: Setting The Adjusting Disk To The Arm Shaft Crank

    (2) - Locking pin Check correct setting First check the factory setting using two locking pins (2) and (3) (alternatively twist drill 5 mm). Faults due to incorrect setting • All function sequences are disrupted. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 36 4. Turn the handwheel, until the locking pin (5) can be inserted into the deepest slot (A) of the adjusting disk. 5. Tighten the screws on the upper toothed belt wheel (2). 6. Fit the toothed belt. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 37: Setting The Lower Toothed Belt Wheel

    (2) - Lower toothed belt wheel Setting steps 1. Turn lower toothed belt (2) into the position shown. 2. Lock machine in position C ( Section 4.8, pg. 28). 3. Place toothed belt on upper toothed belt wheel. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 38 • Feed at standstill ( Section 16.1, pg. 65) • Thrust setting of the top feed foot ( Section 18.1, pg. 75) • Stroke setting of the top feed foot ( Section 18.3, pg. 80) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 39: Rocker Bolt For The Looper Drive And Left Lower Shaft Bearing

    • Remove the throat plate ( Section 4.5.6, pg. 15) • Remove the oil pan ( Section 4.5.9, pg. 18) • Remove the thread cutting device, class 175 and 176 ( Section 4.6.1, pg. 22) • Thread cutting device, class 179 ( Section 4.6.2, pg. 25) •...

  • Page 40: Draining And Filling The Oil In The Looper Drive Housing

    1. Tilt the machine backwards ( Section 4.5.1, pg. 11). 2. Top up the looper drive housing (1) with the oil, DA 10 up to the upper mark (4) on the sight glass. 3. Screw in the oil drain screw (2). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 41: Removing And Fitting The Looper Drive Housing

    1. Push the looper drive housing (1) carefully on to the right. While doing so, slowly turn the lower shaft (3) until the rocker bolt is engaged in its mounting. 2. Tighten the clamping screw (2). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 42 • Set the symmetry of the looper motion ( Section 11, pg. 52) • Set the looper in the looper mounting ( Section 12, pg. 54) • Set the looper and needle bar height ( Section 13, pg. 56) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 43: Setting The Left Lower Shaft Bearing

    4. Tighten the two clamping screws (5). Faults due to incorrect setting • Damage to the looper • Damage to the needle • Damage to the thread cutter • Missed stitches • Thread breakage Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 44: Setting The Rocker Bolt

    1. Remove the grease cap (4). The second fastening screw (5) is accessible from the upper side of the base plate. 2. Screw the gauge (1), order no. 0933 000735, onto the needle plate support. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 45 • Symmetry of the looper motion ( Section 11, pg. 52) • Looping stroke and looper gauge to the needle ( Section 13.1, pg. 57) • Looper and needle bar height ( Section 13, pg. 56) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 46: Setting The Looper Drive Housing

    (3) and the needle plate support (5). Faults due to incorrect setting • Damage to the looper • Damage to the needle • Damage to the thread cutter • Missed stitches • Thread breakage Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 47 • Remove the throat plate ( Section 4.5.6, pg. 15) • Remove the oil pan ( Section 4.5.9, pg. 18) • Remove the thread cutting device, class 175 and 176 ( Section 4.6.1, pg. 22) • Remove the thread cutting device, class 175 and 176 (...
  • Page 48 • Looping stroke and looper gauge to the needle ( Section 13.1, pg. 57) • Looper and needle bar height ( Section 13, pg. 56) • Feed at standstill ( Section 16, pg. 65) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 49: Setting The Needle Evasive Movement (Ellipsis Width)

    Needle thickness at “a”= 0.7 mm Looper thickness at “b”= 1.4 mm Distance from looper tip to the needle = 0.1 mm For larger needle thickness 110 Nm “X” *= 0.1 mm Ellipsis width “E”= 2.3 mm Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 50 = 0.2 mm To set, move the lower shaft axially. To the right = ellipsis width is smaller To the left = ellipsis width is larger Information See next page for setting instructions. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 51: Setting The Needle Evasive Movement

    1:2, i.e., when the lower shaft is moved, e.g. by 0.2 mm, the ellipsis width changes by 0.1 mm. Faults due to incorrect setting • Damage to the looper • Damage to the needle • Missed stitches • Thread breakage Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 52: Resetting The Needle Protection

    Setting the needle evasive movement (ellipsis width) 10.2 Resetting the needle protection Fig. 36: Resetting the needle protection (1) - Screws (2) - Needle protection Setting steps 1. Loosen the screws (1) and reset the needle protection (2). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 53: Setting The Lower Shaft

    After setting the rocker bolts and left lower shaft, you must make the fol- lowing settings: • Symmetry of the looper motion ( Section 11, pg. 52) • Looping stroke and looper gauge to the needle ( Section 13.1, pg. 57) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 54: Setting The Symmetry Of The Looper Motion

    The looper tip is to be behind the needle in slot C and in front of it in slot B. Faults • Damage to the looper • Damage to the needle • Missed stitches • Thread breakage Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 55 (2) - Gauge Sequence Before making adjustments, the following parts must be removed: • Thread cutting device, class 175 and 176 ( Section 4.6.1, pg. 22) • Thread cutting device, class 175 and 176 ( Section 4.6.2, pg. 25) Setting steps 1.

  • Page 56: Setting The Looper In The Looper Mounting

    • Remove the throat plate ( Section 4.5.6, pg. 15) • Remove the feed ( Section 4.5.8, pg. 17). • Remove the thread cutter ( Section 4.6.1, pg. 22) and ( Section 4.6.2, pg. 25). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 57 (5) - Looper 2. Place the gauge (3), order no. 0171 290010, on the right side of the base plate cutout. 3. Move the looper (5) to the gauge and tighten the screw (4). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 58: Setting The Looper And Needle Bar Height

    • Damage to the looper • Damage to the needle • Missed stitches • Thread breakage Sequence Prerequisite: • A straight and undamaged needle must be used. ( Operating Instructions Sec. Replacing Needles) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 59: Setting The Looping Stroke Position And Looper Gauge

    To do this, turn the adjusting screws (3) and (5) accordingly. 5. Set the looper gauge: Set a distance of 0.1 mm by moving the looper mounting (6) axially between the looper tip and the needle groove (8). 6. Tighten (4) screw. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 60 • Checking the symmetry of the looper motion (Pos. B and C) ( Section 11, pg. 52). 7. After definitively aligning the looping stroke position, looper gauge and needle bar: cancel the lock ( Section 4.8, pg. 28). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 61: Setting The Needle Bar Height

    (3) and the upper edge of the looper eye should be at the same level. Faults due to incorrect setting • Missed stitches • Thread breakage Sequence Prerequisite: A straight and undamaged needle must be used. ( Operating Instructions Sec. Replacing Needles) Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 62 • Looping stroke position and looper gauge ( Section 13.1, pg. 57) 4. After definitively aligning the looping stroke position, looper gauge and needle bar: cancel the lock ( Section 4.8, pg. 28). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 63: Setting The Needle Protection

    • Remove the covers on the base plate ( Section 4.5.5, pg. 14) • Remove the throat plate ( Section 4.5.6, pg. 15) Fig. 46: Setting the needle protection (1) - Looper tip (2) - Needle eye Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 64 3. Tighten screw (3). 4. Loosen screws (4). 5. Move the needle protection to the needle point. 6. Tighten screws (4). Important: The needle must not be pushed aside any more than is required. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 65: Setting The Spreader (179)

    The spreader tip should be centered in the looper groove (2). Faults due to incorrect setting • Missed stitches • Thread breakage Sequence Prerequisite: A straight and undamaged needle must be used ( Operating Instructions Sec. 8.7 Replacing needles) Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 66 • Remove the feed ( Section 4.5.8, pg. 17). Fig. 49: Setting the spreader (1) - Spreader (3) - Spreader tip (2) - Screws Setting steps 1. Loosen the screws (2) slightly. 2. Set the spreader (1) accordingly. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 67: Bottom Feed (175, 179)

    4. Tighten the screws of the thrust cam (2). Ensure here that the lower shaft is set tight. Important: For the maximum feed length, the feed must not strike the throat plate cutouts. ( Section 17.3, pg. 72) Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 68: Stroke Motion For The Feed

    (3) - Housing edge Setting steps 1. Unscrew the screws (4) and remove the grease cap (5). 2. Loosen the screws of the stroke cam (2). 3. Lock the machine in slot D. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 69 (2). 6. Position the grease cap (5) and secure with screws (4). Important: In its highest position, the feed should be 0.9 mm above the throat plate surface. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 70: Setting The Stitch Lengths (175)

    Fig. 52: Adjusting the stitch length (1) - Hole (3) - Clamping screw (2) - Guide Setting steps 1. Loosen the clamping screw (3). 2. Insert a peg in the borehole (2) and turn the guide (2) accordingly. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 71: Angle Of Incline Of The Feed (175, 179)

    Bottom feed (175, 179) 16.4 Angle of incline of the feed (175, 179) Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before checking and setting the feed inclination. Check correct setting The incline angle or the parallelism of the feed (1) to the throat plate is set using the cam (3).

  • Page 72: Differential Bottom Feed (176)

    4. Tighten the screws on the thrust cam (1). Sequence After setting the feed motion of the feed, you must make the following settings: • Check the stitch length ( Section 16.3, pg. 68). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 73: Angle Of Incline Of The Feeds

    (4) - Screw Setting steps 1. Loosen the screws (1) and (4). 2. Set the height of the feed mounting with the gauge (order no. 935 054563). 3. Tighten screws (1) and (4). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 74: Feeds In The Longitudinal Direction (176)

    1. Loosen the screws (1) and (2). 2. Set feeds in the longitudinal direction. 3. Tighten screws (1) and (2). Information Screw (1) can only be accessed from outside via the borehole in the base plate. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 75: Main Feed, Stitch Length (176)

    If, for example, a stitch length of 4 mm is set on the stitch adjuster, 11 stitches on thin cardboard should correspond to a feed of 40 mm. Faults due to incorrect setting • Stitch length does not suit Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 76 (3) - Screw (2) - Guide shaft Setting steps 1. Loosen the screw (3). 2. Turn the guide shaft (2) accordingly. 3. Tighten screw (3). Sequence Perform the sewing process and check the stitch length. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 77: Differentiable Foot Top Feed (175, 179)

    Differentiable foot top feed (175, 179) 18 Differentiable foot top feed (175, 179) 18.1 Time of the feed motion of the top feed foot Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before adjusting the feed motion.
  • Page 78 Before tightening the thrust cam screws, pull the thrust cam (1) approx. 5 mm away from the bearing, so that the cam and bearing do not rub against one another. 7. Retighten the two screws of the thrust cam (1). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 79 3. Loosen the screws (4) (two items) of the clamping hub (2). 4. Move the advance lever (1) to the vertical position. 5. Retighten the screws (4) (two items) of the clamping hub (2). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 80: Synchronization Of Top Feed Foot And Feed (175, 179)

    Differentiable foot top feed (175, 179) 18.2 Synchronization of top feed foot and feed (175, 179) Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before setting the synchronization. Check correct setting 1. Set the stitch length to 4 mm for the feed and the top transport foot.
  • Page 81 4. When there is synchronicity between the top and bottom feed, retighten screw (3) of the clamping lever (2). Sequence Use the handwheel to turn the sewing machine through a cycle and check the synchronization. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 82: Stroke Setting Of The Top Feed Foot (175, 179)

    Differentiable foot top feed (175, 179) 18.3 Stroke setting of the top feed foot (175, 179) 18.3.1 Time of the stroke motion of the top feed foot Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before setting the stroke cam.

  • Page 83: Stroke Height Of The Top Feed Foot (175, 179)

    Differentiable foot top feed (175, 179) 18.3.2 Stroke height of the top feed foot (175, 179) Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before setting the stroke. Check correct setting The top feed foot (2) should have a maximum stroke of 2 mm.
  • Page 84 6. Turn the lifting shaft (7). The top feed foot (9) should have a maximum stroke of 2 mm to the throat plate (8). Turn the lifting shaft until the top feed has achieved the required stroke. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 85 Set only as much lift as is required. Too great a lift comes at the expense of the pincer movement, i.e. the higher the stroke, the shorter the move- ment of the top feed on the feed. 7. Tighten screw (6). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 86: Position Of The Top Feed Foot (175, 179)

    Differentiable foot top feed (175, 179) 18.3.3 Position of the top feed foot (175, 179) Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before setting the position of the top feed foot. Check correct setting The top feed foot is set in the factory such that parallel support on the feed is guaranteed for light to medium-weight sewing material.

  • Page 87: Retention Spring On The Looper (175, 176)

    Retention spring on the looper (175, 176) 19 Retention spring on the looper (175, 176) Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before setting the retention spring. Check correct setting When the looper moves from right to left the needle thread loop (4) must slide to above the holding point (1) between the retention spring (2) and the looper (3).
  • Page 88 Retention spring on the looper (175, 176) Fig. 70: Retention spring on the looper (1) - Holding point (3) - Looper (2) - Retention spring (5) - Screw Setting steps 1. Bend the retention spring (2) so that it rests flat against the looper (3).

  • Page 89: Stitch Length-Controlled Thread Take-Up

    1. Push bolt (2) toward the guide shaft until it stops. Setting the thread take-up 1. Loosen screws (3). 2. Set the thread guide in accordance with the scale. 0 = small thread quantity 5 = larger thread quantity Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 90 Otherwise the looper thread could come off in area X of the thread take-up disk. The looper thread would not, during the backward motion of the looper, be pulled back through the take-up disk as required. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 91: Setting The Thread Take-Up Disk

    2. Insert the locking pin in slot E. 3. Turn the thread take-up disk (1) accordingly. The measurement can be performed using gauge 3. 4. Set the disk tightly and tighten the screws. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 92: Setting The Thread Cutting Device

    Setting the thread cutting device 22 Setting the thread cutting device 22.1 Setting the thread cutting device (175, 176) Warning Risk of injury Risk of crushing from moving parts Switch off the sewing machine before adjusting the thread cutting device.
  • Page 93 5. Set the movable blade (2) in cutting position by lightly turning in the pressure screw (3). Important A smooth blade movement must be guaranteed. 6. If required, align the stationary blade (1) to the movable blade (2) using the pressure screw (4). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 94 1. Unscrew screw (3) and first remove the movable blade again. 2. Position the thread cutter such that the blade holder (1) fits over the ball lever (2). 3. Tighten screws (5). 4. Insert blade (4) and secure with screw (3). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 95 5. Loosen the nut (4) and set the end position of the cylinder accordingly using the end stop (3). Sequence Perform cutting test while sewing for both the smallest and largest stitch length. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 96 No more thread than is required should be pulled as this determines the length of the thread end remaining at the start of the seam. The thread puller (1) is stepped. By adjusting the end stop (2) more or less thread can be pulled. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 97: Thread Cutting Device (179)

    6. Check whether the thread puller (2) is moving through the thread loop around the looper. 7. Slowly push the thread puller lever (3) to the left. 8. Check whether the thread loop is pulled against the counter blade (1). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 98 3. Tighten the counternut (7). Correction of the left end position of the thread puller lever 1. Release the counternut (4). 2. Turn the piston rod (5) accordingly. 3. Tighten the counternut (4). Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 99 1. The cutting pressure is set by turning the counter blade (8) with respect to the thread puller plate (7). 2. Loosen the screw (6). 3. Carefully turn the counter blade (8) until the thread is cut cleanly. 4. Tighten screw (6). Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 100: Maintenance Work

    All bearing points are supplied from the oil reservoir (2). • The oil level must never drop below the “MIN” mark. • Top up through the holes in the sight glass until the oil level reaches the “MAX” mark. Service Instructions 175-179 - 00.0 - 05/2014...

  • Page 101: Cleaning Work

    These cleaning operations are described in the operating instructions ( Operating Instructions Sec. 10 Maintenance). Attention Possible damage to the paintwork from solvent-based cleaners Solvent-based cleaners damage the paintwork of the machine. Use only solvent-free substances to clean the machine. Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 102 Maintenance work Service Instructions 175-179 - 00.0 - 05/2014...
  • Page 104 DÜRKOPP ADLER AG Potsdamer Str. 190 33719 Bielefeld Germany Phone +49 (0) 521 925 00 E-mail: service@duerkopp-adler.com www.duerkopp-adler.com...

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