Duerkopp Adler 171 Service Manual
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Duerkopp Adler 171 Service Manual

Duerkopp Adler 171 Service Manual

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Contents
General safety instructions
1.
Set of gauges and handwheel positions . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1
Parts of the set of gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2
Adjustments in the different handwheel positions . . . . . . . . . . . . . . . . . . . . . . . .
2.
Adjusting the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1
Adjustment disk with respect to the arm shaft crank . . . . . . . . . . . . . . . . . . . . . .
2.2
Lower timing belt pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3
2.4
2.5
Looper avoid (width of the elliptic looper path) . . . . . . . . . . . . . . . . . . . . . . . . .
2.6
Symmetry of the looper motion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7
Looper in the looper holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.8
Loop stroke and needle bar height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9
Needle guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10
Thrust motion for the feed dog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.11
Stroke motion for the feed dog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.12
2.13
Looper thread take-up cam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.14
Thread trimming device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.15
Sewing foot stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.16
Setting the stitch lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.
Setting the top puller feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1
Synchronisation of the bottom feed and top puller feed . . . . . . . . . . . . . . . . . . . .
3.2
Distance between the puller and needle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3
Raising stroke of the puller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4
Puller pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5
Fabric keep-off plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6
Timing belt tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7
Replacing the puller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.8
Raising and lowering functions of the puller . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
Adjusting the synchronizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Summary of Contents for Duerkopp Adler 171

  • Page 1: Table Of Contents

    Home Contents Page General safety instructions Set of gauges and handwheel positions ......Parts of the set of gauges ........Adjustments in the different handwheel positions .

  • Page 2: Set Of Gauges And Handwheel Positions

    1. Set of gauges and handwheel positions 1.1 Parts of the set of gauges The gauges listed below enable the accurate adjusting and checking of the classes 171 and 173. The timing pin 3 is incorporated in the accessories of every delivered machine. It can be used to lock the handwheel positions A - F that are required for the machine adjustments.

  • Page 3: Adjustments In The Different Handwheel Positions

    1.2 Adjustments in the different handwheel positions For some adjustments the machine must be set in a certain position. This position is marked by letters on the handwheel and can be locked as follows: – Turn the handwheel into the position defined for the adjustment. –...

  • Page 4: Adjusting The Machine

    2. Adjusting the machine – Loosen the clamping screws of the clamping 2.1 Adjustment disk with respect to the ring. (The clamping ring is located on the left of arm shaft crank the upper timing belt pulley). The deepest slot A of the adjustment disk 1 should –...

  • Page 5: Rocker Bolt For The Looper Drive And Left Bottom Shaft Bearing

    2.3 Rocker bolt for the looper drive and left bottom shaft bearing Turn off main switch! – Screw on the gauge 1, order no. 933 735. - Danger of injury - Loosen the clamping screws 5. – Push the bottom shaft bearing 6 beside the gauge.

  • Page 6: Looper Drive Housing

    2.4 Looper drive housing Turn off main switch! - Danger of injury - The needle point should point to the centre of the looper shaft 5 and the bottom edge of the looper shaft should be parallel to the throat plate underside.
  • Page 7 To adjust the width of the elliptic looper path proceed as follows: – Insert a straight and undamaged needle. – Remove the throat plate and feed dog. Set the Screw in the clamping bushing 2 and insert the needle guard 3 to the rear. metering clock 1.

  • Page 8: Symmetry Of The Looper Motion

    2.6 Symmetry of the looper motion Turn off main switch! - Danger of injury - This adjustment means that the looper point is located at the centre of the needle, when the machine is locked either in slot C or B. In slot C the looper point should be behind the needle, and in slot B in front of the needle.

  • Page 9: Loop Stroke And Needle Bar Height

    2.8 Loop stroke and needle bar height Turn off main switch! - Danger of injury - – Insert the needle into the needle bar and fasten. The loop stroke is 3.5 mm. This means that the looper point must be at the centre of the needle, –...

  • Page 10: Needle Guard

    2.9 Needle guard Turn off main switch! – Loosen the screw 7. - Danger of injury - Adjust the height of the needle guard ac- cordingly. Tighten the screw 7. When the looper point – Loosen the screws 8. moves to the left and Place the needle guard against the needle reaches the needle, the point.

  • Page 11: Stroke Motion For The Feed Dog

    2.11 Stroke motion for the feed dog Turn off main switch! Attention! Except of class 171-131110 - Danger of injury - "Right-hand machine": slot D When the needle point reaches the throat plate Set the first screw of the stroke eccentric 3 seen in needle hole, the descending tooth points of the operating direction level with the second screw of feed dog should be level with the throat plate...

  • Page 12: Retaining Spring At The Looper

    2.12 Retaining spring at the looper (Only class 173-141521 with thread trimmer) Turn off main switch! To make the adjustment proceed as follows: - Danger of injury - – Bend the retaining spring 3 so that it rests flat against the looper. Make also sure that the pressure is greatest in front at the holding During the right-to-left motion of the looper the point 2.
  • Page 13 1 4 2 14 13...

  • Page 14: Thread Trimming Device

    2.14 Thread trimming device Turn off main switch! 4. Mounting and end positions of the thread - Danger of injury - trimmer – Unscrew the screws 2 and initially remove the movable knife. During the trimming process the looper thread behind the looper and the rear thread of the needle –...

  • Page 16: Sewing Foot Stroke

    2.15 Sewing foot stroke Turn off main switch! Adjusting the foot stroke of hinged lever feet - Danger of injury - – Initially, reduce the sewing foot pressure by screwing the pressure sleeve 3 upwards. The height of the sewing foot stroke depends on –...

  • Page 17: Setting The Stitch Lengths

    2.16 Setting the stitch lengths Regular stitch lengths If eg a stitch length of 3 mm has been adjusted at the dial, 11 stitches on thin cardboard must be equal to 30 mm. Loosen the screw 3. Insert a drift into the hole 1 and turn the frame shaft 2 accordingly.
  • Page 18 Condensed stitch length of the top puller feed The puller should always feed slightly more than Lower the puller. the bottom feed. Make condensed stitches on thin cardboard by The material is thus tensioned, thereby preventing pressing the button at the sewing head. seam pucker.

  • Page 19: Setting The Top Puller Feed

    3. Setting the top puller feed Turn off main switch! - Danger of injury - 3.1 Synchronisation of the bottom feed and top puller feed The bottom feed and top puller feed should be To check t. synchronisation proceed as follows: synchronised.

  • Page 20: Raising Stroke Of The Puller

    3.3 Raising stroke of the puller Upper end position The raised puller must not strike the sewing foot. Turn the bolt 8 such that its slot is vertical. Limit the stroke of the piston in the cylinder 9 accordingly using the self-locking set screw 7. To do this, use a 2.5-mm-Allen key.

  • Page 21: Replacing The Puller

    3.7 Replacing the puller The following pullers are available for the diverse applications: Vulcollan puller 9-mm-wide standard on the machine Order no. 933 5725 Vulcollan puller 16-mm-wide asymmetric Order no. 933 5737a (in the accessories bag) Steel puller 9-mm-wide 1-mm-roof-toothed Order no.

  • Page 22: Raising And Lowering Functions Of The Puller

    3.8 Raising and lowering functions of the puller Various functions for the puller can be selected at 3. The puller lowers at the seam beginning and af- the Efka V730 control panel. ter the sewing foot lift within the seam after the number of stitches between 0 and 254 entered in parameter F191 has been sewn.

  • Page 23: Adjusting The Synchronizer

    4. Adjusting the synchronizer Prior to the adjustment check whether the synchronizer is properly fastened on the handwheel flange. When the machine is locked in slot A, the mark 11 should be located exactly opposite the groove 12. This is position 0, which is the starting point that all factory settings of machine positions depend on.

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