Uni I motor has trouble starting

My Uni I’s motor for the ink drum has trouble starting. In the past occasionally when I turned it on, it would not turn and would softly hum, but turning it off and on again would restart it. Now it mostly won’t start turning, though if I manually push on the drum it will start. I think the oil levels are ok, but I am not 100% sure of that. If I need to add more oil, it looks like our motor’s fill plug is horizontal, is that not unusual?


Uni I motor has trouble starting

3 thoughts on “Uni I motor has trouble starting

  • January 21, 2020 at 11:40 am

    It sounds like your motor needs a new starter capacitor. It is located inside the bulge on the motor body. Unplug the press and check to see what the specs are. You can get a replacement from McMaster Carr. Be careful not to bridge the contacts when installing or removing- capacitors can zap you even when not plugged in.


  • January 15, 2020 at 10:55 am

    I will check as you have suggested. It is a power carriage, there are no issues with the carriage motor, even when the ink drum motor does not turn.

  • January 15, 2020 at 10:38 am

    The fill plug is standard.for Universals. The motor issue is most likely electrical. This is a power carriage press, correct? Check the fuses. Check the wiring, make sure that the connections at the switch are tight. You may need an electrician.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.