I picked up a Bally Big Time a few weeks back. Most features on the game work well. I am currently going through all the steppers and eventually the Mixer to clean and rebuild them.
I've rebuilt several pinballs, this is my first Bingo. I'm seeing a lot of different engineering in the Bingos. They were built like tanks, I suppose they had to be since money was at stake.
My first gotcha is the coils on the steppers. The first time I took one apart I discovered a spring inside the sleeve. My first thought was it was there because of some operator hack at some point but I'm finding most of the coils have this internal spring. Anybody know what purpose it serves?
Second question is the need to replace the brass coil sleeves with modern plastic sleeves. Pinball rebuild advice is to replace the brass. The sleeves are very snug inside the coil and I've been afraid to try and force remove the brass sleeve so it might not be replaceable. What is recommended for bingos? Leave the old brass sleeve or replace it?
I've been studying the mixer rebuild instructions on the cdyn bingo site. I'm going to try and preorder all needed parts before I rebuild hoping that I can do the whole thing in a day. I know I've got warn leather clutch pads that will need replacing. Are there any other parts that I should have on hand? How many clutch pads will I need and what size?
This is a great group and you've already helped me a lot. Thanks in advance for your help.