Pfaff 5483 Series Guide
ADJUSTMENT MANUAL
5483
296-12-18 994/002
Justieranleitung engl. 07.11
This Adjustment Manual is valid for machines
from the following serial numbers onwards:
# 2 492 189
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
Index
Contents ................................................................................ Page
1Adjustment ........................................................................................................................... 5
1.01 Tools, gauges and other accessories for adjusting ............................................................... 5
1.02 Abbreviations ......................................................................................................................... 5
1.03 Explanation of the symbols.................................................................................................... 5
1.04 Control and adjustment aids .................................................................................................. 6
1.05 Adjusting the basic machine ..................................................................................................7
1.05.01 Position of the needle in the needle hole .............................................................................. 7
1.05.02 Preliminary adjustment of the needle height......................................................................... 8
1.05.03 Zeroing the bottom feed (on machines with closed gearcase) .............................................. 9
1.05.04 Zeroing the bottom feed (on machines with open gearcase)............................................... 10
1.05.05 Feed driving motion ............................................................................................................. 11
1.05.06 Feed lifting motion ............................................................................................................... 12
1.05.07 Feed lifting height ................................................................................................................ 13
1.05.08 Limiting the stitch length ..................................................................................................... 14
1.05.09 Looper avoiding motion ....................................................................................................... 15
1.05.10 Looper motion...................................................................................................................... 16
1.05.11 Looper height and looper angle ........................................................................................... 17
1.05.12 Looper-to-needle clearance in sewing direction................................................................... 19
1.05.13 Looper-to-needle clearance crosswise to sewing direction ................................................. 20
1.05.14 Final adjustment of the needle height ................................................................................. 21
1.05.15 Height of rear needle guard ................................................................................................. 22
1.05.16 Clearance between rear needle guard and needle .............................................................. 23
1.05.17 Position of the front needle guard (does not apply to all machines) .................................... 24
1.05.18 Guard of looper-avoiding-motion eccentric........................................................................... 25
1.05.19 Take- up lever ....................................................................................................................... 26
1.05.20 Basic setting of the needle thread regulator and the thread guide ...................................... 27
1.05.21 Adjustment of the backtacking mechanism (only for machines with -911/..) ....................... 28
1.05.22 Spreader drive (only for machines with -911/..) .................................................................... 29
1.05.23 Spreader height (only for machines with -911/..).................................................................. 30
1.05.24 Spreader motion and spreader to needle clearance (only for machines with -911/..)........... 31
1.05.25 Functional sewing test (only for machines with -911/..) ....................................................... 32
1.05.26 Looper thread regulator and looper thread take-up.............................................................. 33
1.05.27 Looper thread puller............................................................................................................. 34
Index
Contents ................................................................................Page
1.05.28 Clearance between presser foot and needle plate .............................................................. 35
1.05.29 Presser foot pressure .......................................................................................................... 36
1.05.30 Knee lever rest position ....................................................................................................... 37
1.05.31 Knee lever play..................................................................................................................... 38
1.05.32 Knee lever stop .................................................................................................................... 39
1.06 Adjusting the thread-trimming device -900/71..................................................................... 40
1.06.01 Pre-adjust the thread catcher ............................................................................................... 40
1.06.02 Positioning the ball stud....................................................................................................... 41
1.06.03 Position of thread catcher to needle ....................................................................................42
1.06.04 Thread catcher interlock....................................................................................................... 43
1.06.05 Tension release .................................................................................................................... 44
1.06.06 Cutting test .......................................................................................................................... 45
2Circuit diagrams................................................................................................................. 46
5
Adjustment
1 Adjustment
Please observe all notes from Chapter 1Safety 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 instruc-
tion 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 adjust-
ments, 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
loosened before adjustment and tightened again afterwards.
1.01 Tools, gauges and other accessories for adjusting
●Screwdrivers with blade width from 2to 10 mm
●Spanners (wrenches) with jaw width from 7to 14 mm
●1set Allen keys from 1.5to 6mm
●Metal rule (Order No. 08-880 218-00
●1adjustment pin, ∅ 5mm (Order No. 13-030 341-05 )
●1clamp (Order No. 61-111 600-35/001
●1gauge (Order No. 61-111 642-19
●1gauge for the looper (Order No. 61-111 643-06
1.02 Abbreviations
t.d.c. = top dead centre
b.d.c. = bottom dead centre
1.03 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)
6
Adjustment
Fig. 1 - 01
1.04 Control and adjustment aids
By adjusting the holes 1, 3and 4with the adjustment pin ( ∅ 5mm) the
required needle bar positions can be set exactly.
●Turn the balance wheel until the needle by is approximately in the required postion.
●Insert the adjustment pin into the appropriate adjustment hole and apply pressure.
●Turn the balance wheel slightly backwards and forwards, until the adjustment pin slips
into the rear crank recess, blocking the machine.
Adjustment hole 1 = top dead center of the needle bar (TDC)
Adjustment hole 3 = bottom dead center of the needle bar (BDC)
Adjustment hole 4 = 0.8mm before the top dead center of the needle bar (0.8before TDC)
1
3
4
7
Adjustment
1
3
4
Fig. 1 - 01
1
3
2
1.05 Adjusting the basic machine
1.05.01 Position of the needle in the needle hole
Requirement
1. The needle 6must be centered in the needle hole in a crosswise direction.
2. The distance between needle 6and the front edge of the needle plate must be ap-
prox. 0.8 mm. (In the case of machines with -911/... the needle 6must be centered in
the needle hole in the sewing direction.)
●Loosen screws 1, 2, 3 and 4.
●Shift needle bar frame 5according to the requirements.
●Tighten screw 3securely and slightly tighten screw 2.
●Using screw 1, pull the guide stud behind it against the eye of the needle bar frame 5
and tighten it.
●Loosen screw 2and turn the balance wheel a few times (this helps to avoid the oc-
curence of any tension).
●Tighten screw 2.
●Tighten screw 4, making sure that the slotted guide is parallel to the needle bar.
4
5
0,8 mm
8
Adjustment
1
3
4
1.05.02 Preliminary adjustment of the needle height
Requirement
With the needle bar at TDC (pin in hole 1) the needle point must be positioned 11 mm
above the needle plate, or in the case of the H-model 12.5mm.
●Bring the needle bar 1to TDC.
●Adjust needle bar 1(screw 2) according to the requirement.
Fig. 1 - 02
1
2
11 or 12,5 mm
9
Adjustment
Fig. 1 - 03
1.05.03 Zeroing the bottom feed (on machines with closed gearcase)
Requirement
With the stitch length set at "0", the feed dog must not move when the balance wheel is
turned.
●Loosen screw 1.
●Set stitch length at "0".
●Turn eccentric bush 2(screw 3) so that the marking faces downward and the surface of
the eccentric bush 2is at an angle of 45° to the front edge of the machine.
●Loosen screw 4and twist tension ring 5according to the requirement while turning the
balance wheel continuously.
●Set crank 6at a distance of approx. 8 mm from the contact ring 7and tighten screw 4.
Screw 1is left loose for further adjustments.
1
2
3
45°
4
6
75
ca. 8 mm
10
Adjustment
1.05.04 Zeroing the bottom feed (on machines with open gearcase)
Requirement
With the stitch length set at "0", the feed dog must not move when the balance wheel is
turned.
●Loosen screw 1(see Fig. 1 - 03).
●Set stitch length at "0".
●Turn eccentric bush 2(screw 3) so that the marking faces downward and the surface of
the eccentric bush 2is at an angle of 45° to the front edge of the machine.
●While turning the balance wheel continuously twist crank 4(screw 5) according to the
●requirement.
Screw 1is left loose for further adjustments.
Fig. 1 - 04
4
5
2
3
45°
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