181 1183 ADJUSTMENT MANUAL This adjustment manual applies to machines from the following serial numbers onwards: # 6 500 122 296-12-19 202/002 Justieranleitung engl. 01.
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Index Contents ..................................................................................Page 1 1.01 1.02 1.03 1.04 1.05 1.05.01 1.05.02 1.05.03 1.05.04 1.05.05 1.05.06 1.05.07 1.05.08 1.05.09 1.05.10 1.05.11 1.05.12 1.05.13 1.05.14 Adjustment ........................................................................................................................... 5 Tools, gauges and other accessories for adjusting ................................................................ 5 Abbreviations ..
Index Contents ..................................................................................Page 1.07.02 1.07.03 1.07.04 1.07.05 1.07.06 1.07.07 1.08 1.09 1.10 1.10.01 1.10.02 1.10.03 4 Lateral alignment of the thread catcher ............................................................................... 35 Knife position ....................................................................................................................... 36 Front point of reversal of the thread catcher ............
Adjustment 1 Adjustment On the PFAFF 1181 and 1183 do not use a screw clamp on the needle bar! The special coating of the needle bar could be damaged. Please observe all notes from Chapter 1 Safety of the instruction manual! In particular care must be taken to see that all protective devices are refitted properly after adjustment, see Chapter 1.06 Danger warnings of the instruction manual! If not otherwise stated, the machine must be disconnected from the electrical power supply.
Adjustment 1.04 Checking and adjusting aids With the aid of blocking pin 1 (part No. 13-033346-05) and if necessary adjustment gauge 3 (part No. 61-111 639-73) the machine can be blocked in the following positions for adjustment 1 3 4 2 5 Fig. 1 - 01 Needle bar position 1.8 mm past b.d.c. ● Turn balance wheel until needle bar is roughly in required position ● Insert blocking pin 1 in hole ● Turn balance wheel slightly back and forth until blocking pin engages crank 2 Needle bar position 0.
Adjustment 1.05 Adjusting the basic machine 1.05.01 Basic position of the machine drive This adjustment is only required if toothed belt 2 has been removed. Requirement When the needle bar is positioned 0,6 mm past b.d.c., the markings 3 and 4 should be in alignment.. 2 1 4 3 Fig. 1 - 02 ● Turn toothed belt sprocket 1 according to Requirement and push on toothed belt 2.
Adjustment 1.05.02 Preadjusting the needle height Requirement When the needle bar is positioned 1.8 mm above BDC, the mark on the needle bar 1 must be flush with the bottom edge of the needle bar frame 3. 2 3 1 Fig. 1 - 03 ● Set needle bar at 1.8 mm past b.d.c. and block machine with blocking pin, see Chapter 1.04 Checking and adjusting aids. ● Move needle bar 1 (screw 2), without turning it, according to the requirement.
Adjustment 1.05.03 Bottom feed neutral position Requirement At stitch length setting "0", cranks 1 and 3 must be flush and the feed dog must not make any feeding motion when the balance wheel is turned. 1 3 2 Fig. 1 - 04 ● Raise the presser foot and set the stitch length to "0". ● Turn crank 1 (screw 2) according to the requirement.
Adjustment 1.05.04 Neutral position of the needle feed (only on PFAFF 1181) Requirement At stitch length setting "0" the needle bar must not make any feeding motion when the balance wheel is turned. 2 1 Fig. 1 - 05 ● Set stitch length "0". ● Turn crank 1 (screw 2) according to Requirement.
Adjustment 1.05.05 Bottom feed lifting motion Requirement At stitch length setting "0" and needle bar position 0.6 past b.d.c. on the PFAFF 1181 and at needle bar position t.d.c. on the PFAFF 1183, 1. the bottom feed dog must be at its highest position, 2. ontrol cam 3 must rest on lifting eccentric 1. 3 1 4 2 Fig. 1 - 06 ● Set stitch length "0" and set needle bar at required position ● Turn eccentric 1 (screws 2) according to Requirement 1. ● Adjust control cam 3 (screws 4) according to Requirement 2.
Adjustment 1.05.06 Bottom feed dog height Requirement When feed dog 1 is at its highest point at stitch length setting "0" it must 1. be centred in the feed slot crosswise and in feeding direction 2. Rest on feed dog adjustment gauge 2 over its entire length. 6 7 4 3 5 2 1 Fig. 1 - 7 ● Set stitch length at "0" and feed dog 1 at its highest position ● Raise the presser foot.
Adjustment 1.05.07 Feed dog motion of bottom feed dog Requirement With the needle bar at a position 0.6 past b.d.c. on the PFAFF 1181 or in position 0.6 past t.d.c. on the PFAFF 1183 the feed dog must not make any feeding motion when reversefeed lever 3 is operated at the longest stitch length setting. 3 2 1 Fig. 1 - 08 ● Set the longest stitch and the needle bar at the corresponding position.
Adjustment 1.05.08 Feeding motion of needle feed (only on PFAFF 1181) Requirement When the longest stitch length is set and the needle bar is positioned 0.6 mm past b.d.c., the needle should not move when the reverse-feed key 4 is operated.. 3 1 2 4 Fig. 1 - 09 ● Bring the needle bar into the position 0.6 mm past t.d.c. ● Turn eccentric 1 (screws 2) until the adjustment pin 3 locks into place.
Adjustment 1.05.09 Needle in needle hole center (only on PFAFF 1183) Requirement The needle must penetrate the needle hole exactly in the middle. 1 4 3 2 Fig. 1 - 10 ● Set the needle in the needle hole. ● Loosen screws 1, 2 and 3. ● Move the needle bar frame 4 according to the requirement. ● Tighten screw 2 and turn screw 3 slightly. ● Via screw 1, bring the retracted guide bolt to the eye of the needle bar frame 4 and tighten it.
Adjustment 1.05.10 Needle to needle hole centre (on PFAFF 1181) Requirement The needle must enter excatly in the centre of the needle hole. 3 1 2 Fig. 1 - 11 ● Set stitch length "0". ● Set the needle in the needle hole by turning the balance wheel ● Turn needle bar frame 1 (screws 2 and 3) according to Requirement.
Adjustment 1.05.11 Synchronous strokes of needle- and drop feed (only on PFAFF 1181) Requirement At the longest stitch length setting the needle and feed dog must move by the same stroke when the balance wheel is turned. 2 1 Fig. 1 - 12 ● Set the longest stitch. ● Turn eccentric 1 (nut 2) according to Requirement .
Adjustment 1.05.12 Hook shaft bearing and toothed belt tension Requirement 1. The front edge of the hook shaft 6 must be at a distance of 14.5 mm to the needle center. At the same time, the slot in the hook shaft bearing 1 (see arrow) must be parallel to the bedplate and pointing opposite to the direction of sewing. 2. The toothed belt should be tightened in such a way that, when the gauge is pushed onto the toothed belt, the marking in the gauge window corresponds to the marking on the bushing.
Adjustment 1.05.13 Hook lubrication Requirement 1. The centrifugal disk 1 must be positioned 1.5 mm in front of the oil ring 3. 2. When the machine is running at full speed, after approx. 10 seconds a mark should be made by a fine stripe of oil on the strip of paper placed over the needle plate cutout. 3 2 1 Fig. 1 - 14 The adjustment is only necessary if the wick has been replaced. When replacing the wick, make sure that the new wick is impregnated with oil.
Adjustment 1.05.14 Needle rise, hook-to-needle clearance, needle height and bobbin case position finger Requirement With the needle at 1.8 mm after BDC, 1. the hook point 6 must point to the middle of the needle and be at a distance of 0.05 mm - 0.1 mm to the clearance cut of the needle, and 2. the top edge of the needle eye must be 0.8 mm below the hook point. 3. Between the projection of the bobbin case position finger 4 and the bottom of the retaining groove there should be a distance of 0.5 mm.
Adjustment Thread check spring and slack thread regulator Requirement 1. The motion of the thread check spring must be completed when the needle point enters the material (spring stroke approx. 7 mm). 2. When the thread loop is at its largest when going around the hook, the thread check spring must have moved by approx. 1 mm. 4 + 3 1 2 7 mm 1.05.15 Fig. 1 - 16 ● Turn thread tension 1 (screw 2) according to requirement 1. ● Turn thread tension 3 (screw 4) according to requirement 2.
Adjustment 1.05.16 Position of knee lever Requirement 1. When the knee lever is in its resting position, the axle 5 must be parallel to the bedplate. 2. When the presser foot is resting on the needle plate, the presser bar lifting lever 6 must be touching the circlip 8 lightly and be at a distance of approx. 1 mm from lifting piece 7. 8 1 mm 6 7 1 5 4 3 2 Fig. 1 - 17 ● Lower the presser foot onto the needle plate. ● Turn shaft 1 (screws 2) according to Requirement 1.
Adjustment Knee lever stop Requirement When the knee lever is fully actuated, 1. the presser foot must be raised approx. 9 mm (or approx. 13 mm for a large needle bar stroke) above the needle plate, and 2. lever 3 must swing down automatically. 3 9 or 13 mm 1.05.17 1 2 Fig. 1 - 18 ● Loosen nut 1 and unscrew screw 2 a few turns. ● Raise the presser foot and slide a 9 mm (for small needle bar stroke) or 13 mm (for large needle bar stroke) thick spacer under the presser foot.
Adjustment 1.05.18 Bobbin winder Requirement 1. With the bobbin winder on, the drive wheel 1 must engage reliably. 2. With the bobbin winder off, the friction wheel 5 must not be driven by the drive wheel 1. 3. The bobbin winder must turn off automatically when the thread level is approx. 1 mm from the edge of the bobbin. 5 2 1 4 3 Fig. 1 - 19 ● Move drive wheel 1 (screws 2) in accordance with requirement 1 and 2. ● Move bolt 3 (screw 4) in accordance with requirement 3.
Adjustment 1.05.19 Limiting the stitch length The maximum stitch length which can be selected can be limited mechanically. 4 2 3 1 Fig. 1 - 20 When using Version A and B part sets, the maximum adjustable stitch length must not be larger than 3.0 or 4.5 mm (see chapter 3 Specifications, in the instruction manual)! ● Set the desired maximum stitch length with regulator disk 1. ● Move crank 2 (screws 3) down against stop 4.
Adjustment 1.05.20 Presser foot pressure Requirement The material must be fed reliably. In the process, pressure marks on the material must not be made. 1 - + Fig. 1 - 21 ● Turn screw 1 in accordance with the requirement.
Adjustment 1.05.21 Modifying the needle bar stroke The needle bar stroke is preset in the factory according to requirement. The needle bar stroke can be modified later if specific operating conditions make it necessary to do so. 3 - + 1 2 Fig. 1 - 22 When the needle bar stroke is altered, it is absolutely necessary to readjust the needle height! With a 36 mm needle bar stroke, the maximum speed must be limited to 3800 spm.
Adjustment 1.06 Adjusting the edge trimmer -731/01 1.06.01 Zero position of the knife Requirement With the edge trimmer switched off, the knife should not move when the balance wheel is turned. 2 1 2 1 Fig. 1 - 23 ● Turn crank 1 (screw 2) according to the requirement.
Adjustment 1.06.02 Cutting motion Requirement With the edge trimmer switched on and the needle bar at its t.d.c. on the PFAFF 1183, or at its b.d.c. on the PFAFF 1181, the knife should be at the top of its stroke. 1 2 Fig. 1 - 24 ● Switch on the edge trimmer and bring the needle bar to t.d.c. or b.d.c. (see requirement). ● Turn eccentric 1 (two screws 2) according to the requirement.
Adjustment 1.06.03 Knife height Requirement When the knife is at the bottom of its stroke, the front edge of the knife blade should be approx. 0.5 mm below the top edge of the stationary knife. 0,5 mm 2 1 Fig. 1 - 25 ● Switch on the edge trimmer and bring the knife to the bottom of its stroke. ● Adjust knife 1 (screws 2) according to the requirement.
Adjustment 1.06.04 Cutting angle of the knife Requirement The knife should be 1. Touching the stationary knife 6 without counter pressure and 2. Be at a 0.1 mm slant to the stationary knife 6. 0,1 mm 6 5 3 1 2 4 Fig. 1- 26 ● Loosen screws 1. ● Adjust eccentric 2 (screw 3) in accordance with the requirements. ● Tighten screws 1.
Adjustment 1.06.05 Knife position in sewing direction Requirement When the needle is at its b.d.c., the centre of the knife blade should be positioned at "needle centre". 2 1 Fig. 1- 27 ● Adjust knife bracket 1 (screw 2) according to the requirement.
Adjustment 1.06.06 Knife position crosswise to sewing direction Requirement The knife should be resting on the stationary knife 3 with light pressure. 2 1 Fig. 1- 28 ● Adjust knife bracket 1 (screw 2) according to the requirement.
Adjustment 1.07 Adjusting the thread trimming device -900/24 1.0.01 Adjusting the solenoid / preliminary adjustment of the control cam Requirement 1. When solenoid 3 is completely extended, roller lever 4 should be at the lowest point of the control cam. 2. When the needle bar is positioned at 1.8 mm after b.d.c. (needle rise position), roller lever 4 should engage in the appropriate recess of the control cam. 4 5 4 6 2 2 Fig.
Adjustment 1.07.02 Lateral alignment of the thread catcher Requirement 1. The tip of the thread catcher 5 must point exactly to the center of the needle. 2. The thread catcher 5 must be horizontal. It must not graze anything when it is operating. 1 5 2 6 4 3 5 Fig. 1 - 30 ● Remove knife 1 (screw 2). ● Move needle bar to its BDC. ● Loosen stop 3 (screws 4). ● Position thread catcher 5 (screw 6) manually in front of the needle. ● Align thread catcher 5 (screws 7) according to the requirements.
Adjustment 1.07.03 Knife position Requirement 1. There must be a distance of 4 mm between the cutting edge of the knife and the needle. 2. The right edge of the knife 1 must not extend beyond the right edge of the thread catcher (see arrow). 3 4 mm 1 1 2 Fig. 1 - 31 ● Bring the needle bar to BDC. ● Slide knife 1 under the locking tab and align according to requirement 1. ● Tighten screw 2 lightly.
Adjustment Front point of reversal of the thread catcher Requirement At the front point of reversal of thread catcher 4, the tip of the thread catcher cutout should be 1 mm in front of the bobbin case position finger 5. 1 1 2 4 1 mm 1.07.04 3 5 Fig. 1 - 32 ● Position roller lever 1 at the lowest point of the control cam. ● Adjust bush 2 (screws 3) according to the requirement.
Adjustment 1.07.05 Manual trimming check Requirement Two threads must be cut perfectly both left and right in the cutout of thread catcher 1. 1 3 2 5 4 1 Fig. 1 - 33 ● Move thread catcher 1 by hand to its front point of reversal. ● Double the thread and insert into catcher cutout. ● Carry out trimming operation manually. ● If the threads are not cut according to the requirement, align thread catcher 1 (screws 2) with knife 3 accordingly. ● Move stop 4 against thread catcher 1 and tighten screws 5.
Adjustment 1.07.06 Needle thread tension release Requirement 1. The magnet lift should be 1.5 mm. 2. When the magnet 5 is operated by hand, there should be a distance of at least 0.5 mm between the tension discs 6. 5 0,5 mm 4 6 2 2 3 1 Fig. 1 - 34 ● Adjust disc 1 (nuts 2) according to the requirement. ● Adjust screw 3 (nut 4) according to the requirement.
Adjustment 1.07.07 Readjusting the control cam Requirement When the take-up lever is in its t.d.c., control cam 1 should have moved thread catcher 3. 3 1 2 Fig. 1 - 35 ● Adjust control cam 1 (screws 2) according to the requirement.
Adjustment Adjusting the automatic presser foot lift -910/06 Requirement When the automatic presser foot lift is operated, the clearance between the presser foot and the needle plate must be 9 mm for a small needle bar stroke and 13 mm for a large needle bar stroke. 1 2 9 or 13 mm 1.08 Fig. 1 - 36 ● Move magnet 1 (screw 2) according to the requirement.
Adjustment 1.09 Adjusting the back-tacking mechanism –911/37 Requirement When the longest stitch length is set, the reverse-feed control switch 3 operated and the plunger extended, lever 1 should not touch the bed-plate.. 1 2 3 Fig. 1 - 37 ● Adjust lever 1 (screw 2) according to the requirement.
Adjustment 1.10 Basic position of the machine drive unit 1.10.01 On machines with EcoDrive and control unit P40 ED ● Switch on the machine. ● Press the TE/speed key twice to select the input mode. ● Select parameter "798" by pressing the corresponding +/- key, and select service level C, see Chapter Selecting the user level in the instruction manual for the control panel. ● By pressing the corresponding +/- key select the parameter "799" (Selecting the machine class).
Adjustment ● .By pressing the corresponding +/- key, select parameter "700" ● Sew a stitch by operating the pedal. ● Turn the balance wheel in the sewing direction until the descending needle is level with the top edge of the needle plate. ● Conclude the adjustment of the sewing motor by pressing the "scroll" key 1.10.03 On machines with control unit MD-4-95-220-CE P ● Press and hold button and switch on machine. ● Parameter 47 is displayed. S ● Call up input level.
Note
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