Skip to main content

imageimageI stripped down a GG1 2332, cleaned things up, and when I put it back together, it only runs one direction. I think it is backwards. E-unit engaged and not engaged, does same thing. I don’t hear any noise from e-unit when I cycle. I did not take any wires off of the e-unit or the motor armature cover except the exposed copper wire from from the motor field winding to the center solder tab on the motor shell. Since it is the only wire I moved, I tried connecting it to the only other solder tab it could reach. Nothing happened when attached there. See picture for location of wire connection that has it running in one direction. Also worth noting that I think I broke the wire on the outside of the e-unit winding (see picture). I did get them connected back with solder (barely). It did not run until I did this. Any thoughts and all laughter welcome.

Bill

Attachments

Images (2)
  • image
  • image
Original Post

Replies sorted oldest to newest

you probably broke the plastic gear that rotates to change direction, when you move the lever on the E unit do you hear the coil energize? if the coil energizes the you broke an ear off the rotating gear in the E unit! you can buy the whole e unit or just the parts you need but you'll need a special metal tool to open the e unit to replace the gear and while you're in there you should also replace the copper fingers on the bottom plate where the wires are connect! if you're going to York you can buy all the parts you need from their TCA meet end of April!

Alan

Attachments

Images (1)
  • s-l1600: e unit parts
Last edited by Alan Mancus

Thanks Dave. You are spot on. I discovered last night that my old eyes could not see the break in the fine wire from the coil to the ground side of the lever. That got it going. I still ordered one from The Train Tender to have a comparison in status of my unit versus a good one done by a professional. I've also ordered new fingers and drum to practice taking the old one apart, servicing the inner parts, and reassembling and wiring. I'm still very new at this and working to establish the deep skill set you guys have (yes I'm envious, in a good way).

I do have another question...although I got it running it is cycling weird. Let's say I engage it moving foward first, then power down, power up to go to neutral, and so on. When I power up to go to neutral it lurches forward a bit before going into neutral. Same thing happens on the other side of the cycle when moving from reverse back to neutral. It moves in the wrong direction even more (and sometimes continues in the original direction) if I power-up slowly. If I power up quickly, it works well.

The plunger seems to move freely when I move it with a screwdriver tip but could it be sticking a bit?

Bill

An e unit is designed to operate at just less than 6 volts.   Lionel pre electronic transformers are designed to come on at 6 volts. This way the e unit is supposed to operate prior to the loco moving. If it starts to move before the e unit operates the problem is probably that you are using the wrong transformer or the e unit is operation at too high voltage.  If the problem is the e unit, it may be difficult to fix. Cleaning the mechanism might do it, or there could be shorted turns in the coil.

@texgeekboy posted:

I’ve resigned myself to...  ...tossing out the bad ones.

What a waste of money & resources. These would be rather valuable to those that find this repair a 2 minute cakewalk... have you considered/discussed returning them to The Train Tender as serviceable cores?

I don't care about the money at all, actually, but to see these wonderful electromechanical devices landfilled or scrapped is a real shame.

Last edited by ADCX Rob

There are two different e units. Prewar and up until about 1949 the three position e-units used the 259E- something coil. After that they used the 100-something coil. I believe the difference was a cost cutting effort. The 259e- coil has more turns of smaller wire and a paper wrap between every layer. The e-units with the 259e- something coil are quiet and run cooler. They do not buzz. The 100- coil has so little wire on it that it cannot be used on DC without overheating.   I would suggest that no one would want to down grade their equipment by going to a modern e-unit coil.

Add Reply

Post
This forum is sponsored by Lionel, LLC

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

×
×
×
×
Link copied to your clipboard.
×
×