Summa S2 CLASS - 2.15 Replacing the toolhead

S Class 2 cutter Service manual
Replacements guidelines 2-23
2.15 Replacing the toolhead
Below is the description for the replacement of a standard tangential head. The procedure
described is also roughly applicable to the replacement of a drag head. The areas where the
replacement procedure for the drag head differs are indicated between brackets and in
italics.
The only major difference between replacing a drag knife and a tangential knife is the
positioning of the screws on the carriage plate.
To remove the drag head, proceed as follows:
1. Take the knife holder out of the tangential head.
2. Remove the front cover of the tangential head by loosening the two screws.
3. Remove the cut off knife (changing head 1).
4. Remove the cut of knife assy. Make sure the assy is ‘down’. Move the head all the way to
the left to make sure it is completely down (removing head 2 S show the two screws that
need to be loosened – 1 shows the position it has to be in) .
5. Loosen the flat cables by pulling the flat cable connector cover up. On both sides of the
connector cover there is a small protuberance that you can pry up using a screwdriver.
Gently pull the flat cable out of the connector ( the drag head has only one flatcable).
Then disconnect the connector for the pinchroller-position-sensor. (changing head 3 – 2
arrows point to cables)
6. Remove the head. To do this, loosen the three screws with two counterclockwise
rotations using a small diameter screw driver and lift the head upwards to remove it from
the screws. (changing head 3 arrows with s)
7. Positions of the 3 screws for the tangential head are shown with arrows pointing
upwards. The arrows pointing downwards show position for the screws for the drag head.
To re-install the drag head, proceed as follows:
1. Place the head back onto the screws. Tighten the screws with a 1 1/2 clockwise rotation.
Do not tighten them firmly because the height and position of the head still need to be
adjusted.
2. Put the nose piece into the tangential head. (Put the knife holder into the drag head and
secure the knife holder).
Caution:
Make sure the tip of the knife does not protrude.
3. Adjust the height and position of the head. Use parts 391-635 and 391-636 to do this. The
height between the nose piece (drag knife holder) and the base must be between 2.7mm
and 3mm (changing head 5). This means that one side of the tool slides easily underneath
and the other part cannot slide under the nose piece (dragknife holder). Set the head
perpendicular by using the other tool (changing head 6).