I’ve been having some inconsistencies with the braking and starting of my Universal I. Dave Seat was here about a month and a half ago and made some adjustments to the microswitches to prevent the hard hitting at the feed board I was having (and more importantly showed me how to make proper adjustments). Yesterday it was slamming a bit again so I adjusted the switch and everything ran picture perfect. This morning I went to run it and everything was fine for maybe the first 50 prints, then it started to hit again for the next 50 and then it decided to struggle to leave the feed board and hit hard.
It now will not leave the feed board without a push. What do I need to adjust/lubricate to try and get this more consistent? I saw this earlier post and was intrigued, but not enough to start opening a motor if I don’t have to!
“I have recently rebuilt a Uni-III Power and was perplexed when I could not satisfactorily adjust the “braking” of the carriage at either end of travel. I adjusted the clutch to book spec, checked the micro switches, contacts and rheostat, all were functioning properly. With no other known adjustment I turned my attention to the gear-motor where I removed the top cover (a 2 inch disc affixed with 3 screws) and found an adjusting nut just below the oil level. Given that the access hole was large enough for a socket and was overkill for an oiling hole I put a socket on the nut and turned 1 revolution clockwise. To my amazement the braking was now responsive and with a few more adjustments I can operate the press at about 65% speed with no hard slamming of the carriage.
My question is, has anybody else made this same adjustment and to what success? Is there any literature on this gear-motor anywhere?”
Thanks – Leslie