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AFCA Forums > Antique Fan Collectors Association > Pre-1950 (Antique) > Robbins & Myers B16A6 Gearbox Question

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 Posted: Sat Nov 11th, 2017 04:32 pm
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Bryan Garrison
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Hello,
I inherited a Robbins & Myers b16a6 from my grandfather.  I dove in headfirst to restore it, replace wiring, repaint, etc.  I am trying to put the gearbox back together but apparently I did not pay close enough attention when taking it apart.  I can not figure out how the oscillating gearbox works.  The end of the rotor pictured I'm assuming is supposed to turn the gears however it does not come in contact with anything.  Additionally I am assuming you use a screw driver to engage/disengage the osicllation but it doesn't appear like that is doing anything either...basically I am lost.  Any help is greatly appreciated. (I'm thinking maybe I am missing a part?)

Thank you,
Bryan Garrison

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 Posted: Sat Nov 11th, 2017 08:25 pm
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Bryan Garrison
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I partially figured out my issue.  It turns out the rotor shaft tilts in the rear housing, so it can come in contact with the gears in the oscillating gear box.  I still don't understand yet how it engages and disengages the oscillation, so if anyone has any insight I would love it.  
Thanks,
Bryan Garrison 

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 Posted: Sat Nov 11th, 2017 11:24 pm
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John Fengel
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Bryan Garrison wrote:  I still don't understand yet how it engages and disengages the oscillation, so if anyone has any insight I would love it. 

To "engage" oscillation, tighten the "silver knob with the slot", to "disengage" oscillation, loosen the "silver knob with the slot". If you want the fan to stay in a fixed position, continue loosening the silver knob" until it stops but do not over do it or you may break the Oscillator Housing Top.


Hope this helps.

Last edited on Sat Nov 11th, 2017 11:25 pm by John Fengel

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 Posted: Sun Nov 12th, 2017 12:24 am
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Lane Shirey
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To me it looks like the rotor shaft and drive gear aren't positioned far enough to the rear. In most fans, the middle of the drive gear on the rotor shaft engages the other gear, not the very tip, like yours. 

Perhaps it has the wrong rotor in it or maybe too many fiber washers to the rear? 

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