1181
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. 01.12
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
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Index |
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Contents .................................................................................. |
Page |
1 |
Adjustment ........................................................................................................................... |
5 |
1.01 |
Tools, gauges and other accessories for adjusting ................................................................ |
5 |
1.02 |
Abbreviations ......................................................................................................................... |
5 |
1.03 |
Explanation of the symbols.................................................................................................... |
5 |
1.04 |
Checking and adjusting aids................................................................................................... |
6 |
1.05 |
Adjusting the basic machine .................................................................................................. |
7 |
1.05.01 |
Basic position of the machine drive ....................................................................................... |
7 |
1.05.02 |
Preadjusting the needle height .............................................................................................. |
8 |
1.05.03 |
Bottom feed neutral position ................................................................................................. |
9 |
1.05.04 |
Neutral position of the needle feed (only on PFAFF 1181) ................................................... |
10 |
1.05.05 |
Bottom feed lifting motion ................................................................................................... |
11 |
1.05.06 |
Bottom feed dog height ....................................................................................................... |
12 |
1.05.07 |
Feed dog motion of bottom feed dog .................................................................................. |
13 |
1.05.08 |
Feeding motion of needle feed (only on PFAFF 1181).......................................................... |
14 |
1.05.09 |
Needle in needle hole center (only on PFAFF 1183)............................................................. |
15 |
1.05.10 |
Needle to needle hole centre (on PFAFF 1181).................................................................... |
16 |
1.05.11 |
Synchronous strokes of needleand drop feed (only on PFAFF 1181) ................................. |
17 |
1.05.12 |
Hook shaft bearing and toothed belt tension....................................................................... |
18 |
1.05.13 |
Hook lubrication .................................................................................................................. |
19 |
1.05.14 |
Needle rise, hook-to-needle clearance, needle height and |
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bobbin case position finger.............................................................................................. |
20 |
1.05.15 |
Thread check spring and slack thread regulator ................................................................... |
21 |
1.05.16 |
Position of knee lever........................................................................................................... |
22 |
1.05.17 |
Knee lever stop .................................................................................................................... |
23 |
1.05.18 |
Bobbin winder...................................................................................................................... |
24 |
1.05.19 |
Limiting the stitch length ..................................................................................................... |
25 |
1.05.20 |
Presser foot pressure .......................................................................................................... |
26 |
1.05.21 |
Modifying the needle bar stroke .......................................................................................... |
27 |
1.06 |
Adjusting the edge trimmer -731/01 .................................................................................... |
28 |
1.06.01 |
Zero position of the knife ..................................................................................................... |
28 |
1.06.02 |
Cutting motion ..................................................................................................................... |
29 |
1.06.03 |
Knife height.......................................................................................................................... |
30 |
1.06.04 |
Cutting angle of the knife..................................................................................................... |
31 |
1.06.05 |
Knife position in sewing direction ........................................................................................ |
32 |
1.06.06 |
Knife position crosswise to sewing direction....................................................................... |
33 |
1.07 |
Adjusting the thread trimming device -900/24..................................................................... |
34 |
1.0.01 |
Adjusting the solenoid / preliminary adjustment of the control cam ................................... |
34 |
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3 |
Index |
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Contents .................................................................................. |
Page |
1.07.02 |
Lateral alignment of the thread catcher ............................................................................... |
35 |
1.07.03 |
Knife position ....................................................................................................................... |
36 |
1.07.04 |
Front point of reversal of the thread catcher........................................................................ |
37 |
1.07.05 |
Manual trimming check........................................................................................................ |
38 |
1.07.06 |
Needle thread tension release............................................................................................. |
39 |
1.07.07 |
Readjusting the control cam ................................................................................................ |
40 |
1.08 |
Adjusting the automatic presser foot lift -910/06 ................................................................ |
41 |
1.09 |
Adjusting the back-tacking mechanism –911/37 .................................................................. |
42 |
1.10 |
Basic position of the machine drive unit ............................................................................. |
43 |
1.10.01 |
On machines with EcoDrive and control unit P40 ED ......................................................... |
43 |
1.10.02 |
On machines with PicoDrive and control unit P40 PD2 ....................................................... |
43 |
1.10.03 |
On machines with control unit MD-4-95-220-CE ................................................................. |
44 |
4
Adjustment
1 |
Adjustment |
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On the PFAFF 1181 and 1183 do not use a screw clamp on the needle bar! The |
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special coating of the needle bar could be damaged. |
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Please observe all notes from Chapter 1 Safety of the instruction manual! In |
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particular care must be taken to see that all protective devices are refitted |
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properly after adjustment, see Chapter 1.06 Danger warnings of the instruction |
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manual! |
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If not otherwise stated, the machine must be disconnected from the electrical |
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power supply. |
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Danger of injury due to unintentional starting of the machine! |
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Notes on adjustment |
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All following adjustments are based on a fully assembled machine and may only be carried |
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out by expert staff trained for this purpose. Machine covers, which have to be removed and |
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replaced to carry out checks and adjustments, are not mentioned in the text. |
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The order of the following chapters corresponds to the most logical work sequence for ma- |
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chines which have to be completely adjusted. If only specific individual work steps are |
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carried out, both the preceding and following chapters must be observed. |
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Screws, nuts indicated in brackets ( ) are fastenings for machine parts, which must be loose- |
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ned before adjustment and tightened again afterwards. |
1.01 |
Tools, gauges and other accessories for adjusting |
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● 1 set of screwdrivers with blade widths from 2 to 10 mm |
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● 1 set of wrenches with jaw widths from 7 to 14 mm |
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● 1 set of Allan keys from 1.5 to 6 mm |
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● 1 metal rule, (Part No. 08-880 218-00) |
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● 1 feed dog adjustment gauge, Part No. 61-111 639-71 |
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● 1 adjustment pin (5 mm dia.), Part No. 13-033 346-05 |
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● Adjustment gauge, part No. 61-111 639-73 |
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● 1 adjustment gauge for tightening the hook drive belt, Part-No. 61-111 639-76 |
1.02 |
Abbreviations |
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TDC = top dead center |
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BDC = bottom dead center |
1.03 |
Explanation of the symbols |
In this adjustment manual, symbols emphasize operations to be carried out or important information. The symbols used have the following meaning:
Note, information
Service, repair, adjustment, maintenance
(work to be carried out by qualified staff only)
5
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
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1 |
3 |
4 |
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2 |
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5 |
Fig. 1 - 01 |
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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 0.6 mm past t.d.c.
●Set needle bar roughly at required position
●Place adjustment gauge 3 onto pins 4 and 5, making sure right side is used (for 30 or 36 mm needle bar stroke)
Needle bar position 0.6 mm past b.d.c.
●Set needle bar roughly at required position
●Place adjustment gauge 3 onto pins 4 and 5, making sure right side is used
(for 30 or 36 mm needle bar stroke)
6
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. |
When installing the motor pay attention to the correct position of shaft flange, shock absorber and motor flange!
7
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.
8
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.
9
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.
10
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.
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3 |
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1 |
4 |
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2 |
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Fig. 1 - 06 |
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● 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.
11
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.
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6 |
7 |
4 |
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3 |
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5 |
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2 |
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1 |
Fig. 1 - 7 |
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● Set stitch length at "0" and feed dog 1 at its highest position
● Raise the presser foot.
●Place feed dog adjustment gauge 2 on the needle plate cutout with the arrow in sewing direction so that it is flush with the front edge, and lower the presser foot onto it.
●Adjust feed bar 3 (screws 4) according to Requirement 1.
●Loosen screws 5 and 6.
●Adjust feed bar 3 or eccentric 7 according to Requirement 2.
●Tighten screws 5 and 6 firmly.
12
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.
● Adjust eccentric 1 (loosen screws 2 a little) according to Requirement, but make sure it is not moved sideways.
13
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.
14
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