IMG_0160 Here is the link to a video of noise when the drum turns in print. Not so much when in trip or during return after print. I’ve tried oil in the usual places. Any other things common? Thanks
Figured it out. Below is a picture of the cylinder bearer where it came in contact with a guide of some kind. Looking in Paul’s book, I don’t see this as a part to clean or lubricate. I dropped a bit of oil there and the noise stopped. It seems I could take that guide off and clean it up. Not sure if I ought to do that or not. Looks easy, but those are sometimes famous last words. Comments are welcome.
That “guide of some kind” appears to be the shaft that raises and lowers the cylinder for trip/print. It should not be in contact with the cylinder bearers, but there could be an accumulation of dirt and dried ink that is making contact.
From just watching the video it sounds like the noise coincides with the passage of the impression area of the cylinder by the shaft, as if the tympan itself were dragging against that shaft but that might just be coincidence with the rotation of the shaft. The noise would only happen in Print due to the small shift in the cylinder position, or perhaps that shaft is bent and so it rubs only in the Print position.
Wiper blades… ok I’ll get all the terminology right sooner or later. They seem to be made of rubber. There is also wipers on the bearer. I couldn’t get that off the bar but cleaned them up as I could. After getting old ink off they seem remarkably pliable. I got everything back together and it’s quieter than ever. Great to learn more as I go. Thanks for your help as always.
Lynn
What a moving target this thread has become. I hadn’t considered wiper blades, one seldom sees them on the No. 3 or 4, but more likely to find them on 219 New Style and the 15-21. The sheet fingers are of an older style, too. But one can see that without the wipers, sheet fingers can slide to align with the bearers.
I took the rollers off and it isn’t the sheet fingers. Those seem in place but this is a part I don’t see in the manual/parts list. Seems easy enough to clean up.
Ah, yes: the sheet finger. Also out of view in your video. Two of them are designed to hold paper, at the margins, against the impression cylinder during the print stroke. They should not be slid so far as to align with the the cylinder and bed bearers. They also should align with the gripper heads.
To remove and clean:
– clear bed
– loosen set screw on top of bracket. Use 3/16″ hex key
– slide unit toward, bed but not aligned with gripper heads. If it won’t budge, tap with scrap wood and hammer.
– roll carriage foraward until the open section oif the cyinder lines up behind the sheet fingers.
– remove the roundhead screws on the plate, then push or tap bracket off the tie bar
place bracket on its side
– roll carriage to feed board
– disassemble unit to clean, note that hump on spring steel finger contacts paper.
– clean the tie bar
– lubricate underside of bracket with graphite to aid sliding on tie bar
See page 26–27 of my book, third edition.
I added a picture to the post showing where the noise came from.
Yes the roller was 2 sided with a recessed area but it was filled in so it operates as a regular distributor roller. I’m not sure what they used to fill the recess, but it has worked fine so far.
Interesting, this is a two-color model. That is, you can put different color inks on each side and they will not mix because of the center recesses in the distributor rollers.
Such presses originally had an extra fixed sheet guide in the center of the feed board so you could print two separate sheets at the same time, then swap positions, and in two pulls you have two sheets in two colors.
Photoengravers used these to proof process color plates.
Ok. Sounds easy. Thanks
It’s barely in frame, but it seems that your packing has has shifted onto the cylinder bearer on the operator’s side. This can make the carriage more difficult to move and cause the sound you hear.
Ok added a link to the video of noise in print and not during return.
Yes, please upload a video. You can add it to you original post.
No it’s a number 3. I guess impression cylinder is the term. When I turn it in print it has a noise. Return after print isn’t the same. Much less … grinding for lack of a better word. I could upload a video if that would help. Thanks
I trust you mean a Universal III and not a No. 3.
By drum I think you mean the impression cylinder in the carriage and not the ink drum behind the press bed.
There are a couple different possibilities causing noise:
Excessive grime on the under rails
wiper blades grimy and/or misaligned (located inside the carriage and behind the square tie rod)