6. Thread cutting and automatic feed
6.3 Lefthand thread Optional
In order to cut lefthand thread the toothed belt wheel on top of bolt (F) is to be interchanged with the
toothed wheel Z 75 and the toothed belt wheel (B) on top of the main spindle is to be interchanged with
the toothed belt wheel Z 50.
■ Pull the main plug, loosen the lock screw on top of the cover cap and afterwards open the cover
cap.
■ Loosen the drive belt (K) (v. revolution changer) and remove it from the main spindle.
■ Undo the lock screw (D) of the quadrant. Undo slightly the bolts (F) and (H) on the quadrant and
remove the toothed belt (E) and (G)
■ In order to be able to demount the toothed belt wheel the bolt (F) needs to be moved upwards and
the bolt (H) downwards.
■ Undo nut and washer of bolt (F) and put them aside. Pull both toothed belt wheels (Z48 and Z14)
including the bronze bearing off bolt (F).
■ Pull the toothed belt wheel Z48 off the bronze bush and position afterwards the gear wheel Z75 in
place.
■ Position again the bronze bearing with both gear wheels on top of the bolt (F) (Z75 first) and secure
this with the washer and hexagon nut.
■ Undo the headless pin through the adjustment nut (J) on top of the main spindle and remove the
adjustment nut from the main spindle.
■ Pull the grooved pulley (L), the bearing spacer (A) and toothed belt wheel (B) off the main spindle.
■ Position in the following order gear wheel Z 50, bearing space (A) and grooved pulley (L) on the
main spindle and secure this process with the adjustment nut (J).
■ Watch for a correct adjustment of the ball bearings (v. readjustment main spindle).
■ Stretch the cog belt (I) through the movement of bolt (H) and afterwards tighten up bolt (H).
■ Switch cog belt from belt (F) to belt (H) and tension through the movement of bolt (F), afterwards
tightening bolt (F).
■ Mesh gear wheel Z 75 with gear wheel Z 50 through panning of the quadrant; afterwards tighten
clamping screw (D).
■ Put the V belt (K) upon the main spindle and strain the same. Close the cover cap and secure the
same with the locket screw.
To Next Page
Loading...
