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Hello everyone, new here.  I just recently bought a new Lionel SD70MAC BNSF in Executive Scheme 6-28223, and he said that it was new, but when I put it on the tracks it just jumps a half inch.  All the lights come on and the smoke unit works.  I have it running on fastrack with a CW-80.  My old super chief set engine works great around the track.  You can even hear the engine trying to go, what's the deal?

Last edited by Rich Melvin
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kelby,

 

You're right that it is a conventional engine.

 

First thing I would check is to see if something is jammed in the gear train. Could be anything from a loose traction tire, to a piece of ballast, or a small screw, etc.

 

Best way to check would be to remove the shell and separate the motor from the truck. See if you can turn the wheels by hand and look for an obstruction.

 

Jim

 

Originally Posted by kelby_vise_70:
Thanks for the quick reply, should the wheels turn without too much force without taking it apart? My old engines wheel will turn pretty easily.  I'm not with it today so I don't have a chance to take it apart today.

No. The wheels will not turn on this engine. It has a different style/gearing worm than your older engines. The only way to check for foreign matter is to remove the motor from the truck, unless you are extremely lucky and the foreign object is in view on the underside of the gearing.

 

Jim

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