You will need to find the proper slider and may have to modify the wheel contacts so that the return works properly.
Your best bet would be to convert it to digital AC, which would still work with an analog layout. The reason for this is that there is not a significant difference in cost between a basic Lok Pilot decoder and an electronic reverse unit.

I don't know whether Hag continued the production and retained the parts/molds for the Ae 4/7, even though it was part of the "New Generation".
Most of the models that have come out of Stansstad have been Re 4/4II, Re 6/6 and Re 460.
You can possibly send the locomotive to Hag and have it converted by them. I did that with a DC Re 460, but that was back in the Moerschwil days.

I don't know if the circuit board on the DC Ae 4/7 was the same as the AC version. The non-insulated wheel sets have a different spacing than the DC ones.

Maybe Stefan (Unholz) can help you find a source for the parts. You can try Christian at eyro.ch. He may be able to help you as well.

See: https://www.hag.swiss/wp...ste-Ersatzteile-2022.pdf (Gruppe 13 Ae 4/7)

Regards

Mike C

I prefer DC locos, they are easier to convert to AC when running them digital, as I use the pantographs as the middle contact.

John

You may need to check what protocols are enabled in the decoder. There is always the possibility it is a DCC only decoder, although in Europe it is more likely to be a multi-protocol decoder, but could have some protocols turn off so that only DCC is operational.

Do you know which model Lokpilot is fitted (V3, v4 or v5)?

Sorry, misunderstanding, please delete!

Yes, as Mike states, and also here is what I learned from rewiring only one pick-up shoe ever. If you are not a skilled solderer and aren't used to precise work, if the bare end of the sho lead is too long, it can short on the top of the bogie frame after the hole. If the solder point on the shoe has too much solder, it can short out on the bogie frame as the studs raise up the shoe. So recheck your work.