One of the rider rollers on my Vandercook 4 is loose, rattles when the press is running and seems to be inking slightly unevenly as a result. I can’t find anything in the manual about a part that may be missing or broken, does the rider roller use nyliners also?
The motor is pretty loud and there’s an occasional screechy grinding sound that I think is coming from the main motor or the belt. It seems to keep running and comes and goes but I feel like I should be concerned. I topped up the oil in the speed reducer but can’t figure out where it might go in the main motor.
Video of the issues linked below. I am trying to get this press back into full operation, and feel like I’m flying a little blind.. your help is very much appreciated!
The riders have a wood bushing (F-761) on each end. One may have slipped into the hollow of the rider tube. Replacements, available from NA Graphics, are made of Delrin. The oscillator frame must be disassembled to extract the old ones and install new ones:
Attached is an image from the forthcoming edition of my maintenance book.
_____________
The motor is sealed and does not require oiling. When you oil the Speed Reducer you’re lubricating two gears inside the bell housing that lower the RPM.
In your video IMG_6801. The belt may rubber against the coffin-shaped belt guard. The motor may not be level to the speed reducer, meaning that small pulley and shaft are not parallel to the large pulley. To adjust, loosen, move, and tighten the nuts on the support rods hanging from the speed reducer. Another option is to add washers to the belt guard screws to move the guard away from the pulleys