Pfaff 487 Adjustment Manual
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Pfaff 487 Adjustment Manual

Pfaff 487 Adjustment Manual

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487
ADJUSTMENT MANUAL
This Adjustment Manual is valid for machines
from the following serial numbers onwards:
# 2 756 862
296-12-18 646/002
Justieranleitung engl. 06.09

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Summary of Contents for Pfaff 487

  • Page 1 ADJUSTMENT MANUAL This Adjustment Manual is valid for machines from the following serial numbers onwards: # 2 756 862 296-12-18 646/002 Justieranleitung engl. 06.09...
  • Page 2 The reprinting, copying or translation of PFAFF Service Manuals, whether in whole or in part, is only permitted with our previous authorization and with written reference to the source. PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern...

  • Page 3: Table Of Contents

    Index Contents ..................Page Adjustment ......................... 4 Notes on adjustment ......................4 Tools, gauges and other accessories for adjusting ............... 4 Abbreviations ......................... 4 Explanation of the symbols ....................4 Checking and adjusting aid ....................5 Adjusting the basic machine ....................6 .06.01 Balancing weight ........................

  • Page 4: Adjustment

    If not otherwise stated, the machine must be disconnected from the electrical power supply. Danger of injury due to unintentional starting of the machine! On the PFAFF 487 do not use a screw clamp on the needle bar! The special coating of the needle bar could be damaged. Notes on adjustment All following adjustments are based on a fully assembled machine and may only be carried out by expert staff trained for this purpose.

  • Page 5: Checking And Adjusting Aid

    Adjustment Checking and adjusting aid By blocking holes 1 to 6 with a pin it is possible to accurately fi x the required needle bar positions. Fig. 1 - 01 ● Turn the balance wheel until the needle bar is roughly in the required position. ●...

  • Page 6: Adjusting The Basic Machine

    Adjustment 1.06 Adjusting the basic machine Balancing weight .06.01 Requirement With the needle bar at b.d.c. the underside of the needle bar must be at a distance of approx. 16.5 mm from the needle plate. 16,5 mm Fig. 1 - 02 ●...

  • Page 7: Needle In Needle-Hole Centre

    Adjustment Needle in needle-hole centre .06.02 Requirement The needle must enter exactly in the centre of the needle hole. Fig. 1 - 03 ● Set the needle immediately above the needle hole. ● Loosen screws 1, 2 and 3. ● Reposition needle bar frame 4 according to the Requirement both crosswise and lengthwise of the feeding direction.

  • Page 8: Neutral Position Of Drop Feed

    Adjustment Neutral position of drop feed .06.03 ( Adjustment with the gearcase closed Requirement At stitch length setting "O" the drop feed must not make any feeding movement when the balance wheel is turned. Fig. 1 - 04 ● Set feed regulator lever 1 in its lowest position. ●...

  • Page 9: Adjustment With The Gearcase Opened

    Adjustment Adjustment with the gearcase opened .06.04 Fig. 1 - 05 ● Set feed regulator lever 1 in its lowest position. ● Turn bush 2 (screw 3) so that mark 4 is facing downwards and the edge of the milled surface is at an angle of approx.

  • Page 10: Actuating Lever Under The Reverse-Feed Control

    Adjustment Actuating lever under the reverse-feed control .06.05 Requirement At the longest stitch length setting, reverse-feed control lever 3 must have a slight play (approx. 0.3 mm) when pressed lightly. Fig. 1 - 06 ● Loosen screws 1 and 2. ●...

  • Page 11: Feeding Motion Of Drop Feed

    Adjustment Feeding motion of drop feed .06.06 Requirement At the longest stitch length setting and with the needle bar in position 0.6 past t.d.c. (blo- cking hole 1) the feed dog must not move when the reverse-feed control is operated. Fig.

  • Page 12: Lifting Motion Of Drop Feed

    Adjustment Lifting motion of drop feed .06.07 Requirement At stitch length setting "0" and with the needle bar in position 0.6 past t.d.c. (blocking hole 1) the feed dog must be at t.d.c. The cutout in lifting eccentric 1 must face roughly vertically downwards. Fig.

  • Page 13: Height Of Drop Feed Dog

    Adjustment Height of drop feed dog .06.08 Requirement At stitch length setting "0" and with the needle bar in position 0.6 mm past t.d.c. (blocking hole 1) the feed dog must: 1. be centred in the feed slots of the needle plate both crosswise and lengthwise, 2.

  • Page 14: Clearance Between Presser Foot And Needle Plate

    Adjustment Clearance between presser foot and needle plate .06.09 Requirement When lifting lever 1 is raised there must be a clearance of 5 mm between the presser foot and the needle plate. Fig. 1 - 10 ● Lower presser foot onto needle plate using lifting lever 1. ●...

  • Page 15: Top Feed Actuating Link

    Adjustment Top feed actuating link .06.10 Requirement 1. All moving parts of the top feed must move freely but without any play. 2. The vibrating presser must not contact the lifting presser. Fig. 1 - 11 ● Lower the presser foot using lifting lever 1. ●...

  • Page 16: Neutral Position Of Top Feed

    Adjustment Neutral position of top feed .06.11 Requirement With the stitch length and top feed set at "0" and with adjustment link 9 fi tted, drive lever 22 must not make any movement when the balance wheel is turned. Fig. 1 - 12 ●...
  • Page 17 Adjustment ● Set feed regulator levers 6, 7 and 8 at "0". ● Fit adjustment link 9 onto pins 10. ● Rotate the balance wheel and turn crank 11 (screw 12) so that the vibrating presser no longer moves. ● Loosen nut 1. ●...

  • Page 18: Feeding Motion Of The Top Feed Dog

    Adjustment Feeding motion of the top feed dog .06.12 Requirement When the needle bar is positioned 0.6 mm past t.d.c (adjustment hole 1) and the maximum stitch length is set, lever 3 should not move when the feed reverse key is operated. Fig.

  • Page 19: Vibrating Presser Clearance

    Adjustment Vibrating presser clearance .06.13 Requirement When the presser foot is touching the needle plate and the vibrating presser is at top dead centre, depending on the top feed version, with the stitch length set at “0” there should be the following clearance between the needle plate and the vibrating presser: 1.3 mm when the vibrating presser is operating behind the needle 3.2 mm when the vibrating presser is operating in front of the needle When sewing thin materials, on machines with the vibrating presser operating...

  • Page 20: Top Feed Lifting Motion

    Adjustment Top feed lifting motion .06.14 Requirement With the stitch length set at "2" the lifting presser must rest on the bottom feed dog (see arrow) when the rising bottom feed dog has reached the upper surface of the needle plate. Fig.

  • Page 21: Position Of Lifting Presser

    Adjustment Position of lifting presser .06.15 Requirement When the bottom feed dog is at t.d.c. the lifting presser must be parallel with the drop feed dog. Fig. 1 - 17 ● Turn eccentric pin 1 (screw 2) according to Requirement.

  • Page 22: Synchronizing The Top Feed

    Adjustment Synchronizing the top feed .06.16 Requirement When the feed regulator levers for stitch length and top-feed stroke are set at "3", both top feed and bottom feed must move at the same stroke when the balance wheel is turned. Fig.

  • Page 23: Stitch Length Alignment

    Adjustment Stitch length alignment .06.17 Requirement When the stitch length is set at "3" the feed stroke must be the same in forwards and re- verse feeding Fig. 1 - 19 ● Turn bush 1 (screw 2) according to Requirement. Make sure that the eccentricity of bush 1 faces downwards.

  • Page 24: Eccentric Hook Shaft Bearing And Hook-To-Needle Clearance

    Adjustment Eccentric hook shaft bearing and hook-to-needle clearance .06.18 Requirement 1. The slot in bearing 3 (see arrow) must be visible from below and there should be a slight but still noticeable amount of backlash between gears 5 and 7. 2.

  • Page 25: Final Adjustment Of Needle Rise, Needle Height, And Bobbin Case Position Fi Nger

    Adjustment Final adjustment of needle rise, needle height, and bobbin case position fi nger .06.19 Requirement With the stitch length set at "0" and the needle bar in position 1.8 mm past b.d.c. (adjust- ment hole "4") 1. the hook point must be at the needle centre and the top of the needle eye 0.8 mm below the hook point, and 2.

  • Page 26: Bobbin Case Opener Height

    Adjustment Bobbin case opener height .06.20 Requirement When bobbin case opener 3 is at its left reversal point the top side of its fi nger must be 0.5 mm above the lower edge of bobbin case trip 4. Fig. 1 - 22 ●...

  • Page 27: Adjustment Of The Bobbin Opener

    Adjustment Adjustment of the bobbin opener .06.21 Requirement 1. The distance between the fi nger of the bobbin opener 3 and the edge of the bobbin case base 5 must be 0.8 mm. 2. When the bobbin opener 3 is at its left point of reversal, the bobbin case base 5 should be defl...

  • Page 28: Bobbin Case Opener Motion

    Adjustment Bobbin case opener motion .06.22 Requirement When the needle bar is in position 1.8 mm past b.d.c. (adjustment hole "4"), bobbin case opener 3 must be in its far right position. Fig. 1 - 24 ● Adjust bobbin case opener eccentric 1 (screws 2) according to Requirement.

  • Page 29: Needle Thread Tension Release

    Adjustment Needle thread tension release .06.23 Requirement When presser bar lifter 3 is raised, the tension disks must be at least 0.5 mm apart. 0,5 mm Fig. 1 - 25 ● Adjust tension release lever 1 (screw 2) according to Requirement. ●...

  • Page 30: Thread Check Spring And Thread Regulator

    Adjustment Thread check spring and thread regulator .06.24 Requirement 1. The stroke of thread check spring 3 must be completed when the needle point enters the material (spring stroke roughly 7 mm). 2. Thread regulator 4 must be fi xed in its elongated hole so that thread check spring 3 has moved by about 1 mm when the hook has widened the thread loop to its maximum.

  • Page 31: Bobbin Winder

    Adjustment Bobbin winder .06.25 Requirement 1. When the bobbin winder is engaged the winder spindle must be driven reliably, but when it is disengaged, friction wheel 5 must not rest against drive wheel 1. 2. The bobbin winder must switch itself off when the amount of thread wound is about 1 mm from the edge of the bobbin.

  • Page 32: Knee Lever Resting Position

    Adjustment Knee lever resting position .06.26 Requirement When in its resting position, knee lever linkage 2 must be roughly at right angles to the bedplate. Fig. 1 - 28 ● Raise the presser foot using the presser bar lifter ● Fit knee-lever coupling 1 on the knee-lever shaft and snap linkage 2 into knee lever coupling 1.

  • Page 33: Knee Lever Play

    Adjustment Knee lever play .06.27 Requirement When the presser foot is resting on the needle plate there must be a clearance of about 1.3 mm between lifting lever 3 and lifting piece 4. 1,3 mm Fig. 1 - 29 ● Set needle bar at b.d.c. and lower presser foot onto needle plate. ●...

  • Page 34: Knee Lever Stroke Limitation

    Adjustment Knee lever stroke limitation .06.28 Requirement When the knee lever has been moved to the end stop, there should be a clearance of 9 mm between the presser foot and the needle plate, and the hand lever should drop down through its own weight.

  • Page 35: Position Of Vibrating Presser In Relation To Lifting Presser

    Adjustment Position of vibrating presser in relation to lifting presser .06.29 Requirement When the presser foot is raised with the presser bar lifter and the take-up lever is in its highest position, the teeth of vibrating presser 3 must not be protrude below the shoe of lifting presser 4.

  • Page 36: Pressure Of The Vibrating- And Lifting Pressers

    Adjustment Pressure of the vibrating- and lifting pressers .06.30 Requirement Even at the highest sewing speed the material must still be fed reliably, but there must not be any pressure marks on the material. 12 mm Fig. 1 - 32 ●...

  • Page 37: Stitch Length Limitation

    Adjustment Stitch length limitation .06.31 Fig. 1 - 33 ● Loosen or, depending on the amount of limitation, take out screw 1 (accessible through the fi tting window). ● Set feed regulator lever 2 to the required maximum stitch length. ●...

  • Page 38: Parameter Settings (Only On Machines With Ecodrive And Control Unit P40 Ed)

    Adjustment Parameter settings (only on machines with EcoDrive and control unit P40 ED) Parameter settings are described in the separate operations manual for the drive, and may only be changed by qualifi ed technicians! Parameter list .07 .01 Speed for start backtackl B, C 300 - 2000 1200...

  • Page 39: Circuit Diagrams

    Circuit diagram Stromlaufpläne Circuit diagrams Reference list for the Circuit diagrams 91-191 501-95 Control unit P40 ED Control panel BDF S3 Sewing head recognition system (OTE) Sewing lamp (optional) LED stitch counter Sewing motor Main switch Manual backtacking key S1.1 Pedal speed control unit Start inhibitor (E6 stop) PC-interface (RS 232)
  • Page 40 Circuit diagram 91-191 501-95 Version 07 .07 .06 Part 1 Circuit diagrams 91-191 501-95...
  • Page 41 91-191 501-95 Circuit diagram Part 2 Version 07 .07 .06...
  • Page 42 Circuit diagram 91-191 501-95 Version 07 .07 .06 Part 3...
  • Page 43 Note...
  • Page 44 PFAFF Industriesysteme und Maschinen AG Hans-Geiger-Str. 12 - IG Nord D-67661 Kaiserslautern Telefon: +49 - 6301 3205 - 0 Telefax: +49 - 6301 3205 - 1386 E-mail: info@pfaff-industrial.com Gedruckt in der BRD / Printed in Germany / Imprimé en la R.F.A. / Impreso en la R.F.A...

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