Noise on Vandercook 215

This press is similar to a #4. I was trying to raise the form rollers (the lollipop showed them as being too low). I was able to raise the form rollers on the operator side, but not on the gear side. I suspected the form roller bearing bar had come loose (it has two bolts that often come loose) so I tightened the bolts by hand and the noise started. I then loosened the bolts but the noise did not stop. Any advice is appreciated! Harper-215 Noise-11-12-23a

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Paul Moxon, Moderator
Admin
6 months ago

The large screws adjust the roller height. and the middle screw locks them by contacting the the bearing bars.

Paul Moxon, Moderator
Admin
6 months ago

In your photo, the gap at the front roller is less than the rear roller.
Did you disassemble the oscillator, too? Perhaps the crescent holder is too tight. It should turned until it bottoms out then backed off at least 3/4 of a turn.

Paul Moxon, Moderator
Admin
6 months ago

The roller diameter should be 2.50″
The gap between the frame and the bearing bars should be level but the distance is variable because of the actual diameter of the rubber and the desired roller height in relation the the mass of the printing form.

Paul Moxon, Moderator
Admin
6 months ago

Nyliners need to be replaced if the flanges are very grimy, scored, or chipped. Just expect that they are and don’t bother cleaning. NA Graphics should have them in stock.

Paul Moxon, Moderator
Admin
6 months ago

The bearing bar bolts should be tight, so if they come loose then the threads might be clogged if not stripped. it’s more likely that the sound is due to an uneven gap between the brass frame and the bearing bars.

Adjust the rear and front roller height screws on one side so that gap is even, then make small turns of the screws to slowly raise the bars and thus the rollers on that end.

If, after loosening the middle lock screw and you can’t turn the roller height screws then they’re very likely clogged with ink and grime.

Also, make sure to periodically oil the cores at the notches on the frame.
It appears that Vaseline is needed on the worm gear and the shaft on the opposite end.

Last edited 6 months ago by Paul Moxon, Moderator
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