Stalling Engine

under the trucks where you see the hole opening beside the center round plug slug..you should see a screw there..un screw it...this screw hold the motor on the truck..looks like how my MTH SD45 is setup like..

You may not have to drop the truck.  Can you reach the screw holding the purple wire to the truck/collector?  If so remove it and see if the wire is broke under the heat shrink.

You should be able to repair and reinstall.   G

the screw that holds the collector and the screw in the

hole hold the truck on. take those both off and the truck

should come away from the can motor.

There is a wiring Diagram in Lionels supplement 45 for your engine. As G pointed out the wire is probably broke under the heat shrink or a bad connection on the plug to motherboard.

Bill

Ok, thanks for the input guys!

We know that from the collector (roller) past the heatshrink is good.  Tested that.

Tried removing the screw next to the plug in the truck, but not the collector screw.  Will give it another shot if need to. 

The wiring diagram is very helpful, should be able to trace to where the wire goes from that and based on the diagram, may not need to drop the truck.

Will post results when have tried out the above recommendations.

Thanks, you're the best

Found the problem...

This little guy...

Plan to order a new harness from Lionel and will splice on a new connector.  Re threading that thing looks like a nightmare.  It's already going to be a challenge to get everything back in there!  LOL

Do you need the whole harness?  What exactly is wrong with that connector?

Dunno, figure the crimp inside it is bad.  No, don't need the harness but have none of this type of molex connector on hand

 I had a connector something like that, that was bad in a steamer I converted. I hadn't noticed something not working before the upgrade. I did notice it after completing the new upgrade where a light would not work.

 To speed the story,....

The factory simply crimped the tiny metal piece on over the wires insulation without stripping it properly. So one lead wasn't passing power.

These connectors and pins are also available at Digikey and they're pretty cheap.

Thanks for the info guys.

Enginear-Joe, that's exactly what I think the problem is here.

GGG, will email you, would love to save the shipping .

GRJ, would go the Digikey route, but being ever the optimist, am hoping this will be the only one I need

Are you getting out of model railroading?  If not, I suspect you'll need more someday.

Thanks for the giggle, hehehe.  No, I won't be anytime soon , but I get your drift, and/if the need arises...  you know.

Thanks to GGG I have my new connector and all of that is solved.  However...  there's always an "if" isn't there.  I have a washer left over and I don't know where it came from.  I broke down the truck to get to the screw that held the board in place that the wires ran under to get length on the wires to make the replacement.  Whew!  In the process of all that, this tiny little washer dropped out from somewhere and I didn't see it.  Think it's important

There's always a few parts left after you put them back together, right?

Tiny washer some times goes on the screw before the lug for the wire.  Also a lock washer some times is on the screw that holds the motor to the truck.  Did it have grease on it, is it black or shiny.  G

It's clean and silver.

Wire terminal, or maybe the screw holding pickup roller to truck?  G