Automatic utility-stitch unit – Pfaff 1540 User Manual
Page 34
32
Automatic utility-stitch unit
13. Replacing the automatic module on Pfaff 1520 - 1530
Removal:
z
Disconnect the machine's mains plug.
z
Remove the housing covers as described in this manual.
z
Disconnect light plug 46 (fig. 22).
z
Detach spring 47 at the top of the push-lever.
z
Loosen screw 48.
z
Remove circlip 49.
z
Detach connecting lever 50.
z
Remove circlip 51.
z
Remove reverse button 52 together with bolt 53, connecting rod 54, plastic angle piece 55 and tension
spring 47 (fig. 22).
z
Remove screws 56 and 57 and the two washers.
z
Remove motor pinion 58 from toothed belt 59 and remove the motor to the front.
z
Remove circlip 60 (fig. 23).
z
Remove the two screws 61.
z
Remove the complete automatic module downwards.
Fitting:
z
Loosen the three screws 62 on worm 63.
z
Push worm 63 to the left.
z
Insert the module upwards and at the same time insert pin 64 in the eyelet on connecting bar 65.
z
Position the automatic unit in such a way that the two screws 61 are located in the center of the slots
and the automatic module, after having been moved forwards, is parallel to the housing.
z
Gently tighten screws 61.
z
Place circlip 60 onto pin 64.
z
Install the motor attaching at the same time the motor pinion 58 to toothed belt 59 (fig. 22).
z
Insert the two screws 56 and 57 with their washers and tighten them a little.
z
Adjust the toothed belt to its correct setting and tighten screws 56 and 57.
z
Insert reverse button 52 complete with bolt 53, connecting rod 54, plastic angle piece 55 and tension
spring 47 and tighten by means of fastening screw 48.
z
Refit circlip 51.
z
Re-attach connecting lever 50.
z
Refit circlip 49.
z
Re-attach tension spring 47 at the top of the push-lever.
z
Reconnect light plug 46.