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.
