I remember hearing about them in IUEC school way back in the day, but can't recall if they taught us how to check/set them up. I have an Otis pie plate car that has tripped the DP OL once a day for the past couple days, it's been stuck OOS about 2-3" above the floor. Anyone have any ideas/info?

Last edited by E-man; 07/19/12 12:27 AM.