Pfaff 1181 Guide
ADJUSTMENT MANUAL
296-12-19 023/002
Justieranleitung engl. 06.09
This Adjustment Manual is valid for machines
from the following serial numbers onwards:
# 6 063 202
1181
1183
Industrial
®
1181-D
1183-D
The reprinting, copying or translation of PFAFF Adjustment 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
Index
Contents ..................................................................................Page
13 Adjustment ........................................................................................................................... 5
13.01 Tools, gauges and other accessories for adjusting ................................................................ 5
13.02 Abbreviations ......................................................................................................................... 5
13.03 Explanation of the symbols.................................................................................................... 5
13.04 Checking and adjusting aids................................................................................................... 6
13.05 Adjusting the basic machine .................................................................................................. 7
13.05.01 Basic position of the machine drive ....................................................................................... 7
13.05.02 Preadjusting the needle height .............................................................................................. 8
13.05.03 Bottom feed neutral position ................................................................................................. 9
13.05.04 Neutral position of the needle feed (only on PFAFF 1181) ................................................... 10
13.05.05 Bottom feed lifting motion ................................................................................................... 11
13.05.06 Bottom feed dog height ....................................................................................................... 12
13.05.07 Feed dog motion of bottom feed dog .................................................................................. 13
13.05.08 Feeding motion of needle feed (only on PFAFF 1181).......................................................... 14
13.05.09 Needle in needle hole center (only on PFAFF 1183)............................................................. 15
13.05.10 Needle to needle hole centre (on PFAFF 1181).................................................................... 16
13.05.11 Synchronous strokes of needle- and drop feed (only on PFAFF 1181) ................................. 17
13.05.12 Hook shaft bearing and toothed belt tension....................................................................... 18
13.05.13 Hook lubrication .................................................................................................................. 19
13.05.14 Needle rise, hook-to-needle clearance, needle height and
bobbin case position finger.............................................................................................. 20
13.05.15 Thread check spring and slack thread regulator ................................................................... 21
13.05.16 Position of knee lever........................................................................................................... 22
13.05.17 Knee lever stop .................................................................................................................... 23
13.05.18 Bobbin winder...................................................................................................................... 24
13.05.19 Limiting the stitch length ..................................................................................................... 25
13.05.20 Presser foot pressure .......................................................................................................... 26
13.05.21 Modifying the needle bar stroke.......................................................................................... 27
13.06 Adjusting the edge trimmer –731/01 ................................................................................... 28
13.06.01 Zero position of the knife ..................................................................................................... 28
13.06.02 Cutting motion ..................................................................................................................... 29
13.06.03 Knife height.......................................................................................................................... 30
13.06.04 Cutting angle of the knife..................................................................................................... 31
13.06.05 Knife position in sewing direction ........................................................................................ 32
13.06.06 Knife position crosswise to sewing direction ...................................................................... 33
13.07 Adjusting the thread trimming device -900/24..................................................................... 34
13.07.01Adjusting the solenoid / preliminary adjustment of the control cam ...................................34
13.07.02 Lateral alignment of the thread catcher ............................................................................... 35
13.07.03 Knife position ....................................................................................................................... 36
13.07.04 Front point of reversal of the thread catcher........................................................................ 37
13.07.05 Manual trimming check........................................................................................................ 38
13.07.06 Needle thread tension release............................................................................................. 39
13.07.07 Readjusting the control cam ................................................................................................ 40
Index
Contents ..................................................................................Page
13.08 Adjusting the automatic presser foot lift -910/06 ................................................................ 41
13.09 Adjusting the back-tacking mechanism –911/37 .................................................................. 42
13.10 Parameter settings .............................................................................................................. 43
13.10.01 Parameter list....................................................................................................................... 43
14 Circuit diagrams................................................................................................................ 45
14.01 Reference list for the Circuit diagrams 91-191 516-95 and 91-191 521-95 ...................... 45
14.02 Circuit diagrams 91-191 516-95 ........................................................................................... 47
14.03 Block diagram PFAFF 1180 with control unit P40 PD .......................................................... 50
14.04 Circuit diagrams 91-191 521-95 ........................................................................................... 51
Adjustment
5
13 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.
Danger of injury due to unintentional starting of the machine!
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. Machine covers, which have to be removed and
replaced to carry out checks and adjustments, are not mentioned in the text.
The order of the following chapters corresponds to the most logical work sequence for ma-
chines which have to be completely adjusted. If only specific individual work steps are
carried out, both the preceding and following chapters must be observed.
Screws, nuts indicated in brackets ( ) are fastenings for machine parts, which must be loose-
ned before adjustment and tightened again afterwards.
13.01 Tools, gauges and other accessories for adjusting
1 set of screwdrivers with blade widths from 2 to 10 mm
1 set of wrenches with jaw widths from 7 to 14 mm
1 set of Allan keys from 1.5 to 6 mm
1 metal rule, (Part No. 08-880 218-00)
1 feed dog adjustment gauge, Part No. 61-111 639-71
1 adjustment pin (5 mm dia.), Part No. 13-033 346-05
Adjustment gauge, part No. 61-111 639-73
1 adjustment gauge for tightening the hook drive belt, Part-No. 61-111 639-76
13.02 Abbreviations
TDC = top dead center
BDC = bottom dead center
13.03 Explanation of the symbols
In this adjustment manual, symbols emphasize operations to be carried out or important in-
formation. The symbols used have the following meaning:
Note, information
Service, repair, adjustment, maintenance
(work to be carried out by qualified staff only)
●
●
●
●
●
●
●
●
Adjustment
6
Fig. 13 - 01
2
1
13.04 Checking and adjusting aids
With the aid of blocking pin 1 (part No. 13-033346-05) and if necessary adjust-
ment gauge 3 (part No. 61-111 639-73) the machine can be blocked in the follo-
wing positions for adjustment
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)
●
●
●
●
●
●
●
4
5
3
Adjustment
7
13.05 Adjusting the basic machine
13.05.01 Basic position of the machine drive
This adjustment is only required if toothed belt 2 has been removed.
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!
●
57-16
Fig. 13 - 02
57-42a
1
4
3
2
Requirement
When the needle bar is positioned 0,6 mm past b.d.c., the markings 3 and 4 should be in
alignment..
Adjustment
8
13.05.02 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.
Set needle bar at 1.8 mm past b.d.c. and block machine with blocking pin, see
Chapter 13.04 Checking and adjusting aids.
Move needle bar 1 (screw 2), without turning it, according to the requirement.
●
●
Fig. 13 - 03
2
1
3
Adjustment
9
13.05.03 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.
Raise the presser foot and set the stitch length to "0".
Turn crank 1 (screw 2) according to the requirement.
●
●
Fig. 13 - 04
2
1
3
Adjustment
10
13.05.04 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.
Set stitch length "0".
Turn crank 1 (screw 2) according to Requirement.
●
●
1
2
Fig. 13 - 05
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