9
6.3.12 Greasing racking device........................................................................................... 294
6.3.13 Grease needle bed support/adjustment pieces........................................................ 295
7 Repairing the knitting machine 297
7.1 Supplementary activities during maintenance ..................................................................... 297
7.1.1 Switching power supply 40 V off and on .................................................................. 297
7.1.2 Moving yarn carriers and repositioning them ........................................................... 299
7.1.3 Separating the suction tubes from the carriage........................................................ 300
7.1.4 Move the carriage assembly outward up to the support surface.............................. 301
7.1.5 Sliding board ............................................................................................................ 302
7.2 Helpful knitting rows ............................................................................................................ 303
7.3 Replacing parts .................................................................................................................... 305
7.3.1 Replacing needle and coupling part......................................................................... 306
7.3.2 Replacing intermediate slider................................................................................... 307
7.3.3 Replacing selection jack........................................................................................... 309
7.3.4 Replacing holding-down jack.................................................................................... 310
7.3.5 Remove needle bed or position it at an angle.......................................................... 311
7.3.6 Repairing needle bed and additional needle bed..................................................... 313
7.3.7 Removing carriage part............................................................................................ 316
7.3.8 Removing cam plate................................................................................................. 327
7.3.9 Removing and mounting step motor ........................................................................ 328
7.3.10 Replacing gear racks in the step motor.................................................................... 330
7.3.11 Replacing yarn control unit....................................................................................... 334
7.3.12 Replacing drive belts and friction roller of friction feed wheel .................................. 335
7.3.13 Replacing comb hook............................................................................................... 337
7.3.14 Checking the alignment of the light curtain .............................................................. 338
7.3.15 Replacing yarn carrier .............................................................................................. 341
7.4 Eliminating faults in electronics system ............................................................................... 345
7.4.1 Overview of the electronic control (control cabinet left and right)............................. 345
7.4.2 Power supply unit..................................................................................................... 349
7.4.3 Replacing electronic card......................................................................................... 350
7.5 Check fuses ......................................................................................................................... 351
7.5.1 Checking fuse (right control cabinet)........................................................................ 351
7.6 Needle selection displacement ............................................................................................ 354
7.6.1 Preparations............................................................................................................. 355
7.6.2 Reset reference values of impulse sensor, carry out carriage reference run........... 356
7.6.3 Determining the needle selection displacement manually ....................................... 357
7.7 Entering the data of the needle selection displacement manually ....................................... 360
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