Yale ERPS30TFN36SE078:
tilt, sideshift and lift low speed not working

I need help. This unit has 2 contactors for lift and aux functions. Low lift speed and aux controls does not work. P/S is independent and work of steering sensor. Anyone has any experience with this one? I need diagram for this.
It uses EV-100 for traction and 2 contactors for lift + aux.
  • Posted 13 Jan 2022 01:12
  • Discussion started by ivan_j
  • Ontario, Canada
ivan.forklift.man@gmail.com
Showing items 1 - 2 of 2 results.
Omg. What a strange set up. Battery is shot. And yes it does cycle between 2 contactors like a flip-flop. Thank you for help and explaining how it works. Not a first one I came across. Now thanks to you I know.
  • Posted 20 Jan 2022 12:11
  • Reply by ivan_j
  • Ontario, Canada
ivan.forklift.man@gmail.com
Does this have a center tap on the battery? meaning a 3rd cable in one of the center bars. These older trucks ran the Aux functions at 1/2 battery voltage usually 18v to get the slower speeds. If the connection of the center tap at the lead bar is corroded or loose it will act like this. You will need to tighten this connection or replace/ add an insert to the lead. The contactors in back will flip/flop each time a aux function is called for, using the positive side of the battery then next request will pull from the negative side of the battery.
  • Posted 13 Jan 2022 03:51
  • Reply by Keith_Runnells
  • Wisconsin, United States
Ditchchickens

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