Table Of Contents - Dürkopp Adler 52 i Series Service Instructions Manual

Table of Contents

1
1.1
1.2
1.3
1.4
2
2.1
2.2
3
3.1
3.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.4
3.5
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
5
5.1
5.2
5.3
5.4
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
7
7.1
7.2
Service Instructions 52Xi, 52Xi-75 - 00.0 - 11/2021
About these instructions ......................................................... 3
For whom are these instructions intended?................................ 3
Representation conventions - symbols and characters ............. 3
Other documents ........................................................................ 5
Liability........................................................................................ 5
Safety ......................................................................................... 7
Basic safety instructions ............................................................. 7
Signal words and symbols used in warnings .............................. 8
Working basis ......................................................................... 11
Order of the adjustments .......................................................... 11
Laying the cable guide.............................................................. 11
Removing the covers ................................................................ 12
Access to the underside of the machine................................... 12
Removing and placing the arm cover ....................................... 13
Removing and placing the head cover ..................................... 14
Disassembling and assembling the throat plate ....................... 15
Disassembling and assembling the slide plate ......................... 15
Disassembling and assembling the feed dog ........................... 16
Flats on shafts .......................................................................... 16
Locking the machine in place ................................................... 17
Zigzag stitch mechanism of machines 523, 524, 527 .......... 19
Tooth clearance setting of zigzag stitch gear ........................... 19
Straight stitch alignment ........................................................... 20
Zigzag stitch width .................................................................... 21
Needle stab position setting in feeding direction ...................... 22
Lateral setting of needle stab position ...................................... 23
Lateral setting of central straight stitch position........................ 24
Lateral setting of straight stitches on throat plate needle
hole edges, arresting of zigzag stitch setting mechanism ........ 25
Form stitch mechanism of machine 525 .............................. 27
Tooth clearance setting of form stitch gear............................... 27
Roller bolt position of form stitch steering cam ......................... 29
Setting of needle stab position.................................................. 30
Timing of form stitch steering cam to needle motion ................ 30
Feeding and presser foot....................................................... 31
Stitch length setting mechanism ............................................... 31
Zero stitch length ...................................................................... 32
Feed dog position in throat plate recess and its height ............ 33
Timing of feed dog motion eccentric......................................... 34
Backtacking with solenoid......................................................... 36
Manual foot lifting...................................................................... 37
Foot lifting with knee lever ........................................................ 38
Foot lifting with solenoid ........................................................... 39
Needle bar and hook .............................................................. 40
Needle bar height, needle and hook point clearance ............... 40
Bobbin case driver .................................................................... 41
1