Yesterday the switcher ran. Today it sits there and hums. Moved the E-unit throttle to no avail. I suspect it is an issue with the E-Unit.
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Wiring diagram is going to be similar to that of the Alco on page 477: https://www.lionelsupport.com/...nt1to9/1Complete.pdf
E-unit operation and service is discussed on pg 460 of the same document.
usually the switching gear of the "E" unit a tooth breaks off of the gear and the gear wont move anymore so it stays in the last position it was left in probably neutral or the fingers below the E unit break off so the field or armature no longer make contact with the gear and the electrical fingers are replaceable . they can be purchased form Lionel parts places on the internet! shame you didn't go to York TCA train meet October 21 22 23 !
bmoran4, thanks very much. This info will be very useful.
Alan Marcus and bmoran4, A couple of questions.
1) Does it pay to repair the unit or replace it?
2) What is the Lionel part # to replace it?
3) Does it pay to replace it with an electronic unit?