Old turnbull

Turnbull Overhead traction mg variable voltage simplex elevator
Collective selective 5 stop
Getting reports riders are not getting to there floor and r stuck for a few mins b4 being able to return to the lobby ... it happens once a day ... I have found it above the top floor shut down as well. Doors will open n it will level down and work fine ... changed all brushes and switches n cams seem fine. Any ideas ??

p relay contacts. it maybe going out of step. or worn out p relay clapper. or just the whole p relay worn out. or p relay spring tension set too high. or armature gap of p relay too big.

Does any one still sell those or have documents?

what model and year? got pics? pm me

what model and year? got pics? pm me