To replace the spaceband box pawls, loosen the screw which holds the pawl spring to the pawl lever, unscrew the lifting pawl screw, place pawl in the box, screw up on the lifting screw, being careful to guide the screw into the hole on the pawl. Place the spring in the pawl slot before the pawl lift screw is drawn tight. Tighten the spring screw, which holds the spring against the pawl, until the screw is tight.
The pawl should rest against the back of the pawl guide firmly. Try the pawl to see if the spring has the proper tension and that the pawl is not bent so it does not work freely.
LINE DELIVERY SLIDE
The delivery slide consists of two slides which move in a slideway, a long finger, short finger, delivery slide rod, and adjusting clamp. The slide is connected by a lever link, lever, shaft, and split cam lever, to a roller which operates against the surface of cam No. 10.
The slide gets its action, when delivering a line, from a strong coil spring in the column of the machine which is connected to a lug on the shaft. The slide is returned to normal by cam action, the roller being held against and following the surface of cam No. 10.
When the line delivery slide is in normal position, it is prevented from sliding into the first elevator jaws by the delivery pawl, which is under the spaceband box, held to the face by a screw, and operated by a spring.
This pawl has a notch on the lower side, which acts as a safety to prevent the slide being pulled to the left, in case it is not returned quite far enough for the end of the pawl to pass the catch.
When the slide has returned to normal position, the short finger should go not more than 1/16 of an inch beyond the end of the pawl. If the finger returns more than this distance, the short finger will be forced against the spaceband box chute and cause it to spring, and very likely cause delay in dropping of the spacebands.
The return adjustment is made by moving the split cam lever in or out. First remove the spaceband box so as to have a clear view of the pawl and finger. Then turn the main cams by hand until just before the high part of cam No. 10 is opposite the split cam lever roller. Place the short finger back of the delivery pawl, in normal position. Hold the lever and roller against the cam and tighten the screws in the split cam lever. This should cause the short finger on the slide to be returned not more than 1/16 of an inch beyond the pawl.
This adjustment is approximate, however, due to wear on the connecting parts of the slide on machines which have been in use for some time. The adjustment is made on the older model machines, which do not have the split cam lever, by the eccentric pin on the slide lever.