DURKOPP ADLER 887 Service Instructions Manual
  1. Manuals
  2. Brands
  3. DURKOPP ADLER Manuals
  4. Sewing Machine
  5. 887 Series
  6. Service instructions manual
DURKOPP ADLER 887 Service Instructions Manual

DURKOPP ADLER 887 Service Instructions Manual

Hide thumbs Also See for 887:
Table of Contents

Advertisement

Quick Links

887
Service Instructions

Advertisement

Table of Contents
loading

Related Manuals for DURKOPP ADLER 887

Summary of Contents for DURKOPP ADLER 887

  • Page 1 Service Instructions...
  • Page 2 All rights reserved. Property of Dürkopp Adler AG and copyrighted. Reproduction or publication of the content in any manner, even in extracts, without prior written permission of Dürkopp Adler AG, is prohibited. Dürkopp Adler AG - 2015 Copyright ©...
  • Page 3 Introduction This service booklet contains the instructions for setting the sewing machine head mechanisms. The directions for putting the machine into operation and for setting the positioning drive are contained in another publication. The service booklet is common for all subclasses of the machine and contains also the instructions for setting optional accessories of the machine, if this is necessary owing to their complexity.
  • Page 4 General safety instructions The non-observance of the following safety instructions can cause bodily injuries or damages to the machine. 1. The machine must only be commissioned in full knowledge of the instruction book and operated by persons with appropriate training. 2.

  • Page 5: Table Of Contents

    Index Page Service Instructions for the Class 887 (Edition 09.2015) General Setting gauges ..........
  • Page 6 Index Page Bobbin thread clamp..........Position of the throat plate insert .

  • Page 7: General

    Note Some shafts on the special 887 machine are provided with flat eccentric surfaces. This significantly simplifies machine adjustments. For all adjustments on flat surfaces, the first screw screwed in the direction of the eccentric surface.

  • Page 8: Adjusting The Handwheel

    Adjusting the handwheel Rule: The handwheel (4) is labelled with degree numbers. Certain adjustments are made with these marked handwheel positions. – Turn the handwheel until the degree value specified in the instructions is aligned with the pointer (3). – Proceed with the adjustment described.

  • Page 9: Sewing Machine With Direct Drive

    1.2.2 Sewing machine with direct drive – Unscrew three fixing screws on the hand wheel (5) and remove it. – Put the needle in the upper dead point and insert the setting pin (2), which is a part of the sewing machine accessories and which is fixed on the oil tray bottom side, into the crank head.

  • Page 10: Bottom Feed

    Bottom feed Basic setting for stitch adjustment and stitch length limit Rule: 1. When setting the stitch length at “0”, the stitch regulator gear should have as little play (clearance) as possible when you press down on the bartacking lever. 2.

  • Page 11: Stitch Uniformity For Forwards And Reverse Stitching

    Stitch uniformity for forwards and reverse stitching Rule: 1. When making a rough-scale adjustment to the stitch regulator gear, the machine should not feed when the stitch length is set to “0”. 2. When making a fine-scale adjustment to the stitch regulator gear, the forwards and reverse stitch lengths should only deviate in value by a half stitch.

  • Page 12: Adjusting Of Feed Shaft Position And Clutch Lever Position

    Adjusting of feed shaft position and clutch lever position Rule: When setting the stitch length to “0“ the groove on the feed shaft front side is in the vertical position. The feed clutch should be in the central position. – Set the stitch length to “0”.

  • Page 13: Position Of The Eccentric Tappet For The Feed Movement

    Position of the eccentric tappet for the feed movement Rule: When the handwheel pointer indicates “0” degrees, the feed lever (1) should not move when the bartacking lever is pressed down. – Turn the handwheel so that the pointer indicates “0“. –...

  • Page 14: Switching Over The Feed Clutch

    Switching over the feed clutch Rule: The clutch should be switched over when it is motionless (i.e., when it is in the dead centre point of its pendulum motion). – Loosen the screws (1) on the eccentric tappet (2). – Turn the eccentric tappet (2) so that the dash is aligned with the other dash (3).

  • Page 15: Position Of The Eccentric Tappet For The Switch Over Of The Feed Clutch

    Position of the eccentric tappet for the switch over of the feed clutch Rule: When the handwheel pointer indicates “313” on the scale, the dash (1) on the eccentric tappet should be lined up with the lower dash (2) on the V-shaped push rod.

  • Page 16: Checking The Switch Over Of The Feed Clutch

    Checking the switch over of the feed clutch Rule: The feed clutch should be switched over when it is motionless (i.e., when it is in the dead centre point of its pendulum motion). This can be detected from the rotational direction of the belt pulley (1) in front of and behind the dead centre point.

  • Page 17: Adjusting The Reduced Stitch Length

    Adjusting the reduced stitch length Note: It is an optional equipment. Rule: If a reduced stitch is selected via a switch button, it should then be effectively 50% with 7 mm stitch length and between 60% and 70% with 2 mm stitch length. –...

  • Page 18: Throat Plate

    Throat plate Rule: With the standard setting of single neddle machine the throat plate insert should be adjusted to the center of the throat plate. – Remove the throat plate. – Loosen the screws (2) and adjust the throat plate insert (3) to be in the centre of the throat plate cutout.

  • Page 19: 2.10 Slide Wheel Feeder

    2.10 Slide wheel feeder Rule: 1. The height (A) that the feed dog (1) is above the throat plate must be appropriate for the thickness and toughness of the material. 2. Standard height of teeth above the throat plate: Needle thickness Nm Feed dog height in mm (A) 70 - 80 0.4 - 0.5...

  • Page 20: Adjusting The Wheel Feeder Height For Double Needle Sewing Machines And Sewing Machines With Edge Trimmer

    2.10.2 Adjusting the wheel feeder height for double needle sewing machines and sewing machines with edge trimmer – With the tipped and locked sewing machine loosen the safety screw (1) with an Allen key as well as the blocking screw (2). –...

  • Page 21: Top Feed

    Top feed Position of the needle holder with single needle sewing machines Rule: The position of the needle holder is to be set in dependance to the needle thickness according to the following chart. Angular position of the needle holder Needle thickness Nm 70 - 110 120 - 160...

  • Page 22: Needle Feed

    Needle feed Rule: 1. The needle bar should be adjusted so that it is flush with the presser foot bar. 2. The throat plate is to be set 2.1 with single needle machines, so that the axis of the needle is displaced about A = 0,1 mm to the left of the stitch hole center.
  • Page 23 Fig. 1 Fig. 2 Fig. 3 – Loosen screws (3) and (4). Move the throat plate so that the rule 2.1 (A) = 0,1 mm according to fig. 1 or rule 2.2 according to fig. 2 is accomplished. Tighten the screws. –...

  • Page 24: Roller Foot

    Roller foot Rule: 1. The location surface on the roller foot holder should be aligned in the right angle to the longitudinal axis of the machine. Between the roller foot and the wheel feeder should be a distance of (A) = 0.03 to 0.16 mm. 2.

  • Page 25: Roller Foot Lifting

    Roller foot lifting Rule: 1. The lifting of the roller foot via hand lever should be of 5.4 to 5.6 mm. 2. The lifting of the roller foot via electromagnet should be of 11.5 to 12.5 mm. 3. The lifting of the roller foot via knee lever should be of about 0.2 to 0.4 mm higher than the electromagnetic lifting (if existing).

  • Page 26: Fabric Holder For Double Needle Sewing Machines

    Fabric holder for double needle sewing machines Standard checking 1. The fabric holder should touch the sewing material without exerting any pressure on it. 2. The fabric holder should be positioned in sewing direction and laterally on the edges of the stitch holes. –...

  • Page 27: Adjusting The Needle Bar And The Hook

    Adjusting the needle bar and the hook Needle bar height, play of needle to hook tip, loop stroke Rule: When the handwheel pointer indicates “205” degrees (2.3 mm loop stroke), the hook tip should stand at the needle axis at the stitch length “0“.

  • Page 28: Hook Tip Guard

    Hook tip guard Rule: The guard plate (1) for the hook should prevent the needle from touching the hook tip (2). – Adjust the maximum stitch length according to the machine configuration. – Remove the throat plate. – Position the hook tip (2) on the needle and adjust the setting screw (3) of the guard plate (1) by using an Allen key of 3 mm, so that the needle does not touch the hook tip.

  • Page 29: Bobbin Housing Release

    Bobbin housing release Rule: 1. When the Allen key (1) is inserted in the threaded pin (3), the index should point to the degree on the graduation scale of the handwheel: - for the right hook case 112° - for the left hook case 302° 2.

  • Page 30: Hook Lubrication

    Hook lubrication Rule: The lubricator’s regulator screw (1) should project approx. 1 mm out of the lubricator. – The oil quantity necessary for a safe lubrication of the hook is set at the factory. A modification may only be needed in exceptional cases.

  • Page 31: Thread Setting

    Thread setting Thread regulator, check spring, bolt for the thread lever mechanism Rule: 1. The right edge of the thread regulator (1) should end at figure 2 on the scale. 2. The check spring (5) should be set to the distance measure of (A) = 10 to 12 mm.

  • Page 32: Bobbin Winder

    Bobbin winder Rule: 1. When the bobbin winder is switched off, the distance between bobbin winder wheel and belt pulley should be (A) = 0.8 mm. 2. The winding procedure should stop automatically, when the bobbin is filled up to 0.5 mm underneath the the bobbin edge. –...

  • Page 33: Thread Cutter General

    Thread cutter General The large and the oversized hook could be used with the present machine. In both cases the parts used are identical. The knife carrier should only be mounted in a different position. Position of the thread-pulling knife, position of the counter knife Rule: 1.

  • Page 34: Starting Position For The Thread Pulling Knife

    Starting position for the thread pulling knife Rule: When the roller (1) is at the highest point of the control cam (2), the marking “O” (3) of the thread pulling knife should stand close to blade of the counter-knife. – Check if the control cam (2) is stopped at the ring (4).

  • Page 35: Control Cam

    Control cam Rule: 1. There should be a clearance distance (A) = 0.05 to 0.1 mm between the highest point on the control cam (1) and the roller (2). 2. The threads should be separate when the pointer on the handwheel points from “40”...

  • Page 36: Bobbin Thread Clamp

    Bobbin thread clamp Rule: The clamping force of the spring (1) should not be set higher than needed. It should just be able to pull out the lower thread from the hook. – Sew and cut the threads. – Using a screwdriver (2), inspect the thread according the illustration.

  • Page 37: Position Of The Throat Plate Insert

    Position of the throat plate insert Rule: When sewing with short stitch length, the throat plate insert should be shifted against the operator to avoid stitch skipping at the beginning of sewing. – Depending on the thread thickness, set the stitch length from 1.5 to 2.5 mm –...

  • Page 38: Sewn Material Edge Trimmer Control Switching On/Off Edge Trimmer

    Sewn material edge trimmer control Switching on/off edge trimmer Caution! Risk of injury! Adjust the trimming mechanism only with the main switch switched off. Switch on – Push the lever (1) down. – By this action the upper knife holder (2) together with the cutting knife (3) is shifted to the bottom cutting position.

  • Page 39: Upper Knife Height Adjustment

    Upper knife height adjustment Rule: The standard height value of the cutting knife is 5 mm for the vertical edge trimmer. This value can be changed as needed as follow: – Insert the setting pin (1) in the hole in eccentric (2) and set in the vertical position.

  • Page 40: Height Adjustment Of Cutting Knife

    Height adjustment of cutting knife The cutting knife (1) is clamped in the knife holder (2) with two bolts (3) and by means of a groove. – Lower the knife holder (2) to the bottom position by means of a lever (4).
  • Page 41 – To provide for the correct setting in the sewing direction, the cutting knife (1) should be in a correct position against the cutting edge of the bottom replaceable knife so that any contact is avoided of the cutting edge of the upper knife with the retaining part (7) in front of the knife.

  • Page 42: Setting Of Side (Lateral) Position Of Knife

    Setting of side (lateral) position of knife The lateral position of the cutting knife depends on the sewn material distance from the needle. To provide for the correct function of the edge trimmer, there must not be any gap between the bottom and upper cutting edge.

  • Page 43: Setting Of Upper Knife Angle With Regard To Bottom Cutting Edge

    Setting of upper knife angle with regard to bottom cutting edge Setting of the crossing of the cutting knife (6) and bottom cutting edge (7) is important for the correct function of the edge trimming and look of the cut edge of the sewn material. For thinner materials, both cutting edges should be parallel, with thicker materials, a demand may arise to slightly turn the front part of the upper knife in the direction of the bottom knife cutting edge.

  • Page 44: Material Guide Adjustment

    Material guide adjustment For a correct guiding of the sewn material against the cutting knife a tipping guide can be used. The guide can be lowered in the bottom position independent of the cutting knife holder by pushing down of the control lever (1). Another possibility is to switch the guide on and off simultaneously with the switching on the edge trimmer main lever (2), which is ensured by pushing down of the pin (3) in the upper (switched off ) position of both...

  • Page 45: Replacing The Lower Knife

    Replacing the lower knife At the change of sewing category it is necessary to replace the throat plate (can be purchased additionally). Dependent on the width of the trimmed edge and selected sewing category it is necessary to choose a suitable bottom knife (1) and the gib (4) for its fixing (see Operating manual, par.

  • Page 46: Sharpening The Upper Knife

    Sharpening the upper knife The upper cutting knives supplied as standard, which are made of tool steel, can be sharpened again after they get blunt, best of all by means of a special claming fixture (can be ordered additionally) either manually, or on a special machine grinder at observing its prescribed geometry (see the picture).

  • Page 47: Electronic Control And Sewing Machine Drive - Positioning Motor

    Electronic control and sewing machine drive - positioning motor All operating instructions and parameter sheets are available at the manufacturers´ websites (see www.efka.net, www.duerkopp-adler.com, www.hohsing.com, etc.). Selected instructions concerning the control and drive setting needed for the operators are included in the Operating instructions. Selected instructions needed for the technician to set the drive are included in the Operating instructions.

  • Page 48: Terminals To Pcb Connections - Electromagnetic Variant

    Terminals to PCB connections - electromagnetic variant Description of DA178-2 (9850 688001) switchboard connection X11 - main connection cable to control unit X12 - keypad (Taster) X13 - terminals for solenoid connection 1,2,3 – supply voltage +24V 4 - VR (backtacking) 5 - FL (foot lifting) 6 - FS (thread tensioner) 7 - STL OUT (half stitch)

  • Page 49: Terminals To Pcb Connections - Pneumatic Variant

    Terminals to PCB connections - pneumatic variant Description of DA199_2 (9850 838000) switchboard X11 - 37-pole connector (to control box) X12 - thread tensioner valve X13 - secondary thread tensioner valve X14 - bartacking valve X15 - sewing foot valve X16 - keypad X17 - bobbin thread monitor X18 - light barrier...
  • Page 50 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...

Table of Contents