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Thread: Bachmann S4 Switcher with DCC

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    Default Bachmann S4 Switcher with DCC

    I recently acquired the Bachmann S4 switcher with the SF zebra stripes effect.

    Very impressed, runs (ran), quietly and pulls great, it has been my workhorse.
    Yesterday it started growling, a sort gear threshing noise.
    Don't want to run it anymore until I ascertain what's going on.
    Anyone have any ideas?

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    First thing I would do is pull off the trucks and see if the wheels roll smoothly. Sounds like there might be a piece of shmootz stuck in the gears.

    -Mark

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    Quote Originally Posted by Spookshow View Post
    First thing I would do is pull off the trucks and see if the wheels roll smoothly. Sounds like there might be a piece of shmootz stuck in the gears.

    -Mark
    Yep, shmootz it was!
    Along with hair, dust, and general mung.
    Found a little piece of metal sticking up out of the copious amount of grease residing therein.
    That was probably the culprit.

    Cleaned it all up as best I could, ran a strong magnet around the area, didn't find any more scrap metal.
    Sounds normal now.

    It seems the factory assemblers subscribe to the "if a little lubrication is good, then a lot more is better" school of thought.
    Grease everywhere, mopped some out with a Kleenex.

    Took a few extra pictures while I had it apart, for those who are curious for a look behind the curtain.
    Didn't see any evidence of a flywheel, but it does look like a coreless motor.
    Attached Images Attached Images

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