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79646-AX - excessive vibration  Rate Topic 
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 Posted: Tue Aug 29th, 2017 12:28 am
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Dmitri Shuev
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Hello everyone:
I have acquired another 79646-AX off of the eBay with an intent to restore. Problem is - the seller did not use ANY packing material at all! The fan was simply thrown into the box, and was flopping around like that all the way to the destination!

Needless to say, the guard came off in the process, blades got exposed, and were banging against the walls of the box. Ditto for the oscillator mechanism.

I have gingerly plugged it in, and the fan still runs, but there is a significant amount of vibration, especially on start and stop. Also, the oscillating motion is not as smooth as I would like to see, with jerking mid-arc, and in random places...

Question - what should I start looking at first? Are there any techniques to check if the rotor shaft is still true, and if and where the blades got bent? Anything else?

There is no visible bends or kinks to the baldes, so I am assuming that the damage is more subtle...

Any advise would be appreciated.

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 Posted: Tue Aug 29th, 2017 02:24 am
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Levi Mevis
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Well I've never had to do too much work with straightening out fan blades but by the sounds of it it sounds like your blades are out of whack and bent slightly, surprisingly enough even if the blades are slightly out of true they can cause a significant amount of vibration, which was my experience with an old Eskimo box fan I acquired from Goodwill which was going to be thrown out, but they let me buy it from them since I explained to them that I collect vintage and antique fans. anyways as for the oscillator mechanism it probably needs to be cleaned out and regreased as that fan probably still has its original grease in it yet that has long since petrified and will cause the problems you've described.

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 Posted: Tue Aug 29th, 2017 11:28 am
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Lane Shirey
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If you use the search function on this forum, you can find out how to remove the Emerson blade and also how to balance blades without high tech equipment. Both subjects have been posted many times in the past. 
Best of success. 

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 Posted: Wed Aug 30th, 2017 01:22 am
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Dmitri Shuev
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OK, thank you - I'll start with a disassembly, cleaning and lubrication, and re-check the balance after this is done.

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 Posted: Wed Aug 30th, 2017 11:45 am
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Lane Shirey
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Emerson fans are put together a bit differently than other fans so when you use the search function, make sure to include "Emerson" or your model number in the search. If you can't figure out how to,get something apart, don't force it, instead post pics and an explanation on what's giving you a problem and someone will help you. 

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 Posted: Sat Sep 9th, 2017 03:15 am
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Kevin Massey
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I would send it back. No sense in messing with a cheaper Emerson fan.

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