2353 Slows Down

My first thought is that the brushes are hanging up in the holder, or could be insufficent spring tension on the brushes.  Does the motor feel too hot to handle when it stops??

Marty

Try to ohm out the armature segments. See if they are open or shorted. They say some of these get bad armature wiring after many years. As Martin said, maybe the springs that hold the brushes are weak.

Rob

I like to add an extra ground wire to each of the motors. The spring clip that provides a connection between the motor and the frame does not always do a consistent job.

Thanks guys. I checked out the armature and the grounding, and discovered that one of the brushes was worn oddly. On the end that faced the armature, there was a chip out of it so that it looked like a half moon touching the armature. Maybe it was hanging up if the brush hit the armature just so.  Anyway, I replaced the brushes and all is fine.

Loving the smell of ozone for the holidays.

Thank you. 

Spider82, Check that armature again. If the half moon has been carbonized inside it can make a short between armature sigments. This will eventually distroy the armature. If this is the case the carbon must be cleaned out with a small screwdriver or an exacto knife.

Al

Thanks for the reminder. I went back in and checked/cleaned the armature again. It runs fine now. Still a LOT of sparks from the roller pickups. The rollers do roll, and there is no deep pitting. This is my only postwar diesel that sparks so much. Any ideas?

Thanks for the help.

Change the roller assembly to the 2023-22 type collector to reduce sparking.

Rob, just wondering how by changing out the collector it would reduce sparking?

Just curious!

Thanks

It's a completely different set up.  The 2023 piece has the roller spinning on the axle, the earlier 2333 type has a one piece roller, of a different material, spinning in the roller brackets.  Operators who have converted report reduced or nearly eliminated spark showers.

Thanks Rob. That makes sense.

Guess I have to change a few of mine that do spark a lot.

I like sparks. It looks cool when the room is dark and just the layout lights are on. Actually I like that roller assembly idea. I will have to the 2023 roller assembly at the next show.

Cleaning the rails might help reduce sparking?

Maybe the spring pressure on the rollers has relaxed too much?