®
Industrial
1295
1296
ADJUSTMENT MANUAL
This Adjustment Manual is valid for machines
from the following serial numbers onwards:
# 2 730 099
296-12-18 640/002
Justieranleitung engl. 06.09
Contents
Contents ............................................................................... Chapter - Page
13
Adjustment .............................................................................................................. 13 - 1
Notesonadjustment ................................................................................................ 13 - 1
Tools, gauges and other equipment .......................................................................... 13 - 1
Abbreviations............................................................................................................ 13 - 1
Explanation of the symbols ...................................................................................... 13 - 1
13.01
13.02
13.03
13.04
13.05
Adjusting the basic machine ................................................................................. 13 - 2
Position of the bottom feed dog crosswise to sewing direction ................................ 13 - 2
Adjusting the bottom feed dog in sewing direction.................................................... 13 - 3
Bottomfeeddogheight ............................................................................................ 13 - 4
Needleheight(preliminaryadjustment)..................................................................... 13 - 5
Needleinneedle-holecentre ..................................................................................... 13 - 6
Bottomfeeddogliftingmotion.................................................................................. 13 - 7
Feeding stroke of bottom and top feeds.................................................................... 13 - 8
Hook clearance, needle rise, needle height and needle guard ................................... 13 - 9
Topfeedstroke......................................................................................................... 13 - 11
Topfeedliftingmotion .............................................................................................. 13 - 12
Bobbin case opener .................................................................................................. 13 - 13
Slipcoupling ............................................................................................................. 11 -14
Needle-threadtensionrelease................................................................................... 13 - 15
Thread check spring, without subclass -900/56 ........................................................ 13 - 16
Thread check spring on the PFAFF 1296 with subclass -900/56 ............................... 13 - 17
Bobbinwinder .......................................................................................................... 13 - 18
Pressure of the lifting presser ................................................................................... 11 - 19
13.05.01
13.05.02
13.05.03
13.05.04
13.05.05
13.05.06
13.05.07
13.05.08
13.05.09
13.05.10
13.05.11
13.05.12
13.05.13
13.05.14
13.05.15
13.05.16
13.05.17
13.06
Adjustingthethreadtrimmer-900/56........................................................................ 13 - 20
Engagingsolenoid..................................................................................................... 13 - 20
Control cam (preliminary adjustment) ....................................................................... 13 - 21
Control lever spring action ........................................................................................ 11 - 22
Controlleverstroke .................................................................................................. 13 - 23
Thread-trimmerdrivelinkage .................................................................................... 13 - 24
Linkage bar (only on the PFAFF 1296)....................................................................... 13 - 25
Threadcatcherheight ............................................................................................... 13 - 26
Threadcatcherrestingposition ................................................................................. 13 - 27
Knifepressure .......................................................................................................... 13 - 28
Bobbinthreadtrappingspring ................................................................................... 13 - 29
Control cam (final adjustment).................................................................................. 13 - 30
Release lever............................................................................................................ 11 - 31
Release rod .............................................................................................................. 13 - 32
13.06.01
13.06.02
13.06.03
13.06.04
13.06.05
13.06.06
13.06.07
13.06.08
13.06.09
13.06.10
13.06.11
13.06.12
13.06.13
13.07
13.07.01
Parametersettings ................................................................................................... 13 - 33
Parameter list ........................................................................................................... 13 - 33
14
Circuit diagrams ....................................................................................................... 14 - 01
Adjustment
13
Adjustment
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!
Unless stated otherwise, during all adjustment work the machine must be
disconnected from the electric and pneumatic power supply!
Danger of injury if the machine is started accidentally!
For the adjustments in this chapter the PFAFF 1296 two-needle machine is
illustrated. On the PFAFF 1295 single-needle machines various adjustments only
have to be carried out on one side, i.e. in the right-hand hook area. This is
referredtointhedifferentchapters.
13.01
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
machines 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
loosenedbeforeadjustmentandtightenedagainafterwards.
13.02
Tools, gauges and other equipment
● Screwdrivers withi blade widths from 2 to 10 mm
● Spanners (wrenches) in sizes from 7 to 13 mm
● Allen keys from 1.5 to 6 mm
● Metal rule (part No. 08-880 218-00)
● Needle-rise gauge (part No. 61-111 600-01)
● Gauge, (top feed stroke 7 mm) (Part No. 61-111 633-61)
● Screw clamp (part No. 61-111 600-35)
13.03
13.04
Abbreviations
t.d.c. = top dead centre
b.d.c. = bottom dead centre
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)
13 - 1
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