I am having trouble with an old AS-relay out of a Gottlieb Volley. I can't get the wiper to turn as it is designed to. I got a rebuild kit from The Pinball Resource but it didn't help. I took everything apart, cleaned it, added a bit of oil to lubricate the shaft that holds the gear and the gear itself, adjusted the bracket in inside into various positions, I made sure that the shaft doesn't get wedge against the board and I installed a new spring. The only way I can get it to operate properly (by hand) it with a stronger (red) spring and by not tightening the screws shown in the picture all the way. With the original spring and tightening the 2 screws I am not even getting close to it moving as designed. Once the arm presses down on the wiper even the stronger red spring has a hard time moving the internal gear forward.
I am having a similar problem with the ball count unit that also has a wiper and relies on a spring moving a gear forward.
Any idea what the secret sauce is that makes this thing operate properly?