DURKOPP ADLER 745-34-2 Installation Instructions

Index Page:
Part 3: Service Instructions 745-34-2
1. General notes
1.1 Gauges .................................................... 6
1.2 Grooveinthearmshaftcrank ...................................... 7
2. Sew ing machine head
2.1 Raising the sewing machine head .................................... 8
2.2 Removing / Installing the sewing machine head............................ 10
2.3 Crankpinatthearmshaft......................................... 12
2.4 Needle bar linkage and disconnectable needle bars ......................... 15
2.4.1 Removing the needle bar linkage .................................... 15
2.4.2 Removing a needle bar from the linkage ................................ 17
2.4.3 Disassembly of the needle bar ...................................... 18
2.4.4 Assembly of the needle bar ........................................ 18
2.4.5 Installation of the needle bars in the needle bar linkage ....................... 19
2.4.6 Installation of the needle bar linkage .................................. 21
2.4.7 Height of the needle bar linkage ..................................... 23
2.4.8 Switch actuation point of the needle bars................................ 24
2.4.9 Aligning the needle bar linkage to the throat plate .......................... 25
2.4.10 Exchanging the needle holder ...................................... 26
2.5 Hook...................................................... 27
2.5.1 Hookshaftheight.............................................. 27
2.5.2 Adjusting the gear clearance of the hook drive ............................ 28
2.5.3 Adjusting the looping stroke ........................................ 29
2.5.4 Adjusting the height of the needle holders ............................... 30
2.5.5 Adjusting the distance between hook tips and needles ....................... 32
2.5.6 Needle protection .............................................. 34
2.5.7 Exchanging the hook ............................................ 35
2.5.8 Adjusting the bobbin case holding wire ................................. 36
2.5.9 Aligning the light barriers of the bobbin thread monitor ....................... 38
2.6 Centerknife................................................. 40
2.6.1 Removing / Installing the driving motor ................................. 40
2.6.2 Removing / Installing the switching cylinder .............................. 41
2.6.3 Adjustingtheknife ............................................. 42
2.7 Threadcontrollerspring.......................................... 44
2.8 Trimming and clamping device for the needle threads ........................ 45
2.8.1 Function ................................................... 45
2.8.2 Exchanging knife and thread catcher .................................. 47
2.9 Trimming and clamping device for the hook threads ......................... 48
2.10 Thread puller for the needle threads ................................... 51
2.11 Synchronizer................................................. 52
2.12 Oillubrication................................................ 53
2.12.1 Hooklubrication............................................... 54
3

DURKOPP ADLER 745-34-2 Specifications

General

Brand	DURKOPP ADLER
Model	745-34-2
Category	Sewing Machine
Language	English