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Trying to get the blade off!  Rate Topic 
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 Posted: Tue Mar 24th, 2020 12:39 am
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Vic Valencheck
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Hey guys I'm having a hard time getting the blade off of this Emerson Jr.It does come off clock wise like most Emersons doesn't it? I've tried heating it and and soaking it with penetrating oil with no luck. I tried putting a screw driver, punch through the oval hole in the back to try to hold the rotor in place but can't get a good hold of it. The oval hole has no threads for a screw to be screwed into. I was thinking maybe I could tap some threads in that hole. It would be for a 5/16" bolt. What do you think?







There's a fiber washer between the blade and motor shaft. You would think it would come off easily.


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 Posted: Tue Mar 24th, 2020 12:53 am
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Steve Stephens
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Old oils may be "gluing" the threads tightly.    Penetrant, heat, let sit some after the penetrant.  Hold a good medium torque on the blade if you can but don't go so hard that the blade loosens from the blade hub where it is swaged.   I woudn't drill and tap into the rotor which might cause it to be off balance.  Those Emersons can be tough.

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 Posted: Tue Mar 24th, 2020 01:31 am
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Michael Rathberger
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See if the threaded rod on the back will come out. Once out the rotor blade and front cover will come out together.  From there you can grab and hold the rotor to help get the blade off. Worked for me on a cast hub 17666 once.

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 Posted: Tue Mar 24th, 2020 01:58 am
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Steve Stephens
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Michael Rathberger wrote: See if the threaded rod on the back will come out. Which way do you turn the brass piece to loosen, CW or CCW?

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 Posted: Tue Mar 24th, 2020 02:19 am
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Vic Valencheck
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Steve Stephens wrote: Old oils may be "gluing" the threads tightly.    Penetrant, heat, let sit some after the penetrant.  Hold a good medium torque on the blade if you can but don't go so hard that the blade loosens from the blade hub where it is swaged.   I woudn't drill and tap into the rotor which might cause it to be off balance.  Those Emersons can be tough.

Steve, I ment to thread the oval hole not the rotor.

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 Posted: Tue Mar 24th, 2020 02:30 am
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Vic Valencheck
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Michael Rathberger wrote: See if the threaded rod on the back will come out. Once out the rotor blade and front cover will come out together.  From there you can grab and hold the rotor to help get the blade off. Worked for me on a cast hub 17666 once.

Michael, I almost ruined the brass screw in the back. I was turning it CCW but it came off by turning it CC. Is there another screw I have to take out the rod?

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 Posted: Tue Mar 24th, 2020 09:43 am
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Michael Rathberger
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Not that I'm aware of. On mine it released the locking nut on the end of the rotor which allowed it to come out. Guess it was a spot of luck and I owe you a screw. I'll look around and see if I have one.

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 Posted: Tue Mar 24th, 2020 02:33 pm
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Vic Valencheck
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Michael Rathberger wrote: Not that I'm aware of. On mine it released the locking nut on the end of the rotor which allowed it to come out. Guess it was a spot of luck and I owe you a screw. I'll look around and see if I have one.

No the brass screw is fine. Was asking if there was a inserted screw behind the brass screw to take the rod out.
FYI that brass screw on my 1510 is removed CCW where as this Jr. is removed CW.

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 Posted: Wed Mar 25th, 2020 12:11 am
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Richard Daugird
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Vic Valencheck wrote: Steve Stephens wrote: Old oils may be "gluing" the threads tightly.    Penetrant, heat, let sit some after the penetrant.  Hold a good medium torque on the blade if you can but don't go so hard that the blade loosens from the blade hub where it is swaged.   I woudn't drill and tap into the rotor which might cause it to be off balance.  Those Emersons can be tough.

Steve, I ment to thread the oval hole not the rotor.
Is it thick enough to tap? If you did drill the rotor, could you not fill the hole later and bring it back to balance?

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 Posted: Wed Mar 25th, 2020 12:51 am
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Steve Stephens
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I don't have any answers for you Richard.   I had one Emerson 12" fan where I could not get the blade off but it wasn't my fan so maybe I gave up prematurely.  Bill Voit (his fan) got it off although I didn't watch him do it.

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 Posted: Wed Mar 25th, 2020 01:30 am
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Vic Valencheck
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Richard Daugird wrote: Vic Valencheck wrote: Steve Stephens wrote: Old oils may be "gluing" the threads tightly.    Penetrant, heat, let sit some after the penetrant.  Hold a good medium torque on the blade if you can but don't go so hard that the blade loosens from the blade hub where it is swaged.   I woudn't drill and tap into the rotor which might cause it to be off balance.  Those Emersons can be tough.

Steve, I ment to thread the oval hole not the rotor.
Is it thick enough to tap? If you did drill the rotor, could you not fill the hole later and bring it back to balance?

The housing is cast iron. Tapping it might be my last resort. Not going to drill a hole in the rotor.

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 Posted: Thu Mar 26th, 2020 09:31 am
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Lane Shirey
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Hi Vic, they sure can be a bugger.  I’ve had some that I’ve had to soak the leather washer for days with Kroil then heat the hub to the point that the old oil sizzled inside. I usually heat it, then let it sit for a little then repeat heating.  It takes a while for the heat to soak all the way inside enough to soften the old oil. 
I like to wrap the hub with duct tape and use a vice grip on it to provide the torque. That’s of course if you can figure out a way to hold the rotor.  Maybe you can use wood shims to insert between the front of the rotor and front housing.  Then tighten the housing to jam the rotor?  I’ve done that before. You just have to make sure the shims dont pinch the stator coils. 

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 Posted: Thu Mar 26th, 2020 02:36 pm
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Derek Warnecke
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I was able to get the blade off my 1927 9" oscillator Junior yesterday. I used a small, long flathead screwdriver carefully wedged against the rotor through one of the motor vent holes at a sharp angle. Look with a flashlight first to make sure you clear the windings. I applied heat to the hub with a heat gun and eventually it spun free.

Last edited on Thu Mar 26th, 2020 02:36 pm by Derek Warnecke

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 Posted: Thu Mar 26th, 2020 11:39 pm
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Vic Valencheck
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Success!! I went to the shop today to hopefully get that blade off. After it been soaked in penetrating oil for2 days, put duck tape around the shaft of the blade with a vise grip I was able to hold the rotor with a screwdriver. Turning the blade CW with a lot of force was able to free it up! :clap:

Thanks Lane for the tips it helped a lot. It was funny that I was reading the last Fan Collector magazine for the first time this morning and you had wrote an article  on the same subject. How cool is that! :D

Thanks to everyone else with their  comments. Every bit helps.
  Now I can continue with the restoration.












Last edited on Thu Mar 26th, 2020 11:47 pm by Vic Valencheck

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 Posted: Fri Mar 27th, 2020 09:03 am
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Lane Shirey
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Woo hoo!   Glad you got it loose!  Now the restoration can begin! 

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