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I have a demon-possessed Marx 666. I recently acquired it from eBay. The buyer didn't warn me about it. I suspect that it might have come from Dante's inferno. Maybe it belonged to a demon from **** - Mephistopheles - or maybe Beelzebub.

It was a basket case when I bought it, so I thought it might be fun to see if I could get it running again.

I took it apart, ordered the parts it needed, and then reassembled the motor. I bench tested the motor, then ran just the motor on the track. It performed very well. Then I put the shell back on it - and it died. It just hummed a bit, but wouldn't run forward or reverse.

After lots of frustration, I finally discovered that a piece of black electrical tape over the top part of the brush plate would solve the problem. Prior to this, I confirmed that there was no physical contact between the brush plate and the inside of the ZAMAK shell, so it seemed odd that I'd need to insulate the brush plate with the black tape.

I have a bunch of 666's - and I've never had to do this before.

Any ideas on what sort of anomaly I am dealing with here?

Maybe I should consult with a Priest?

PXL_20240303_225612275

PXL_20240303_225924548

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The 2 top nuts holding on the brush plate. Are there washers causing the nuts to stick out behond the end of the studs?   Are they the orginal "thin" nuts or thicker ones?  Has the rear mount been bent causing the body to sit slightly lower? 

With Lionel this often happens with the pins that hold on the hand rails.  I shorten the bent over tabs inside the cab.   

@VHubbard posted:

The 2 top nuts holding on the brush plate. Are there washers causing the nuts to stick out behond the end of the studs?   Are they the orginal "thin" nuts or thicker ones?  Has the rear mount been bent causing the body to sit slightly lower?

With Lionel this often happens with the pins that hold on the hand rails.  I shorten the bent over tabs inside the cab.   

No washers. The brushplate hex nuts are not the original nuts. When I received the locomotive, the brushplate was missing a nut - so I ordered two new replacements nuts from Parts4Marx. The new nuts are thicker (0.0925") than the original nut (0.083"). Here is a picture of the motor with the black electrical tape removed to show the two new brushplate nuts.

PXL_20240304_163314101

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