Table of Contents
Service Instructions 745-35-10 D - 00.0 - 10/2017 1
1 About these instructions ...........................................................5
1.1 For whom are these instructions intended?..................................5
1.2 Representation conventions – symbols and characters...............5
1.3 Other documents..........................................................................7
1.4 Liability..........................................................................................7
2 Safety...........................................................................................9
2.1 Basic safety instructions...............................................................9
2.2 Signal words and symbols used in warnings..............................10
3 Machine head............................................................................13
3.1 Gages.........................................................................................13
3.2 Slot in the arm shaft crank..........................................................13
3.3 Swiveling up the machine head..................................................14
3.4 Swiveling down the machine head.............................................16
3.5 Disassembling the machine head...............................................17
3.6 Assembling machine head .........................................................19
3.7 Assembling the crank pin at the arm shaft .................................21
3.8 Needle bar linkage......................................................................26
3.8.1 Disassembling the needle bar linkage........................................26
3.8.2 Removing a needle bar from the needle bar linkage..................29
3.8.3 Dismantling the needle bar.........................................................31
3.8.4 Assembling the needle bar.........................................................32
3.8.5 Assembling needle bars into the needle bar linkage..................33
3.8.6 Assembling the needle bar linkage.............................................36
3.8.7 Setting the height of the needle bar linkage...............................38
3.8.8 Aligning the needle bar linkage with the throat plate..................40
3.8.9 Changing the needle holder .......................................................41
3.9 Hook ...........................................................................................43
3.9.1 Setting the height of the hook shaft............................................43
3.9.2 Setting the gear clearance of the hook drive..............................45
3.9.3 Setting the loop stroke................................................................46
3.9.4 Setting the needle holder height.................................................47
3.9.5 Setting the distance between hook tips and needles .................49
3.9.6 Setting the needle guard ............................................................52
3.9.7 Changing the hook .....................................................................53
3.9.8 Setting the bobbin case holding wire..........................................54
3.10 Middle knife ................................................................................56
3.10.1 Disassembling the drive motor ...................................................56
3.10.2 Assembling the drive motor........................................................57
3.10.3 Disassembling the switching cylinder.........................................58
3.10.4 Assembling the switching cylinder..............................................59
3.10.5 Setting the middle knife..............................................................60
3.11 Setting the thread tension spring................................................62
3.12 Setting the trimming and clamping device
for the needle threads.................................................................63
3.13 Setting the trimming and clamping device for the hook threads...... 66
3.14 Setting the thread advancing device for the needle threads ......69
3.15 Setting the synchronizer.............................................................70
3.16 Setting the differential gear.........................................................71