AFCA Forums Home
Home Search search Menu menu Not logged in - Login | Register
AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > 1951 Emerson 77646-AS stuck fan blade

 Moderated by: Steve Cunningham, Rod Rogers, Larry Hancock
New Topic Reply Printer Friendly
1951 Emerson 77646-AS stuck fan blade  Rate Topic 
AuthorPost
 Posted: Sun May 3rd, 2020 03:50 am
  PMQuoteReply
1st Post
Steven Davis
Guest
 

Joined: Thu Apr 30th, 2020
Location: New York USA
Status: 
Offline
I'm new to all this and this is my first antique fan.

I've seen a few videos and read some on this fan before digging into tearing it down to clean it up. 

I have been trying to remove the fan blade, seems stuck, i am putting a fair amount of pressure on the blade and it wont unscrew and i am turning it in the direction it spins. i'm afraid of bending the blade Any secrets to freeing it up?

I am new to Fan collecting, always wanted an old fan and happened upon this Emerson 77646-as at a local shop and picked it up for 20 bucks because i liked the look of it and figured it be a good project. the shop owner could only tell me  "all it does is hum" .. one turn of the blade by hand and you could feel it was all gummed up...

Back To Top PMQuoteReply  

 Posted: Sun May 3rd, 2020 04:39 am
  PMQuoteReply
2nd Post
Zachary Parr
AFCA Member


Joined: Thu Dec 22nd, 2016
Location: Overland Park, Kansas USA
Status: 
Offline
This fans use a 1.5 mfd capacitor so you will want to replace that too. Watch this video. 

Back To Top PMQuoteReply

 Posted: Sun May 3rd, 2020 08:32 am
  PMQuoteReply
3rd Post
Steven Davis
Guest
 

Joined: Thu Apr 30th, 2020
Location: New York USA
Status: 
Offline
Thanks for the heads up on the cap, will do that.

I actual watched that video before i even started. There really nothing in that video to help with how to get it loose if it is stuck and wont spin off.
I've used both methods described in the video for locking the rotor to unscrew the blade.
right now i am using the screw though the left gearbox bolt hole method so i can use both hands on the blade

I cant unscrew the blade. it will not budge. 

like i said i am afraid of bending the blades from trying to unscrew it. It is pretty stuck on there.

the threads seem pretty deep inside the motor, i am not sure i could it it with something like pb blaster












Last edited on Sun May 3rd, 2020 08:42 am by Steven Davis

Back To Top PMQuoteReply  

 Posted: Sun May 3rd, 2020 06:09 pm
  PMQuoteReply
4th Post
Zachary Parr
AFCA Member


Joined: Thu Dec 22nd, 2016
Location: Overland Park, Kansas USA
Status: 
Offline
Let me see if I can find a video for your fan. 

Back To Top PMQuoteReply

 Posted: Mon May 4th, 2020 07:01 pm
  PMQuoteReply
5th Post
Chris Wimberly
AFCA Member
 

Joined: Fri Oct 5th, 2018
Location: Macon, Georgia USA
Status: 
Offline
I wonder if this is something similar to what I JUST experience with a Emerson 6250D model. My blades wouldn't come off either. I tried tapping that shaft of the rotor, and it still wouldn't come out.

So here's what I did... I got a socket whose throat was wider than the shaft, and I tapped the back of the socket so has to push the blades further onto the shaft. This exposed the tip of the shaft, and then I realized that the tip of the shaft was hammered by someone in the past and it made the shaft wider than the fan blade insert hole.

So I so took my dremel tool and filed the tip of the rotor shaft down to make it narrower. The blades eventually came off once I had filed it down enough.

Hope this helps!

Back To Top PMQuoteReply  

 Posted: Tue May 5th, 2020 01:07 am
  PMQuoteReply
6th Post
Steven Davis
Guest
 

Joined: Thu Apr 30th, 2020
Location: New York USA
Status: 
Offline
Chris Wimberly wrote: ... I got a socket whose throat was wider than the shaft, and I tapped the back of the socket so has to push the blades further onto the shaft. 
This model of Emerson has a blade that screws on and does not slide on and off a shaft. 
So that trick will not work for this fan, but, a good trick to keep in the back of my head.

So my issue is unscrewing the blade off the rotor.  The hub of the blade blade actually encloses part of a pump assembly that circulates the oil in the fan and there is actually oil in it. ... though id bet the oil is all gum by now on this one.

Quite an interesting design.

Back To Top PMQuoteReply

 Posted: Wed May 6th, 2020 02:27 pm
  PMQuoteReply
7th Post
Steven Davis
Guest
 

Joined: Thu Apr 30th, 2020
Location: New York USA
Status: 
Offline
What if i apply heat to the hub of the blade?

Back To Top PMQuoteReply  

 Posted: Thu May 7th, 2020 01:29 am
  PMQuoteReply
8th Post
John Fengel
AFCA Member


Joined: Mon Nov 14th, 2005
Location: Temple, Texas USA
Status: 
Offline
Steven Davis wrote: What if i apply heat to the hub of the blade?
At this point, that's likely the best solution. First though, spray some penetrating oil down the SILVER TUBE on the back of the motor and then tilt the motor forward to allow it to soak into the threads. Do this a couple of times over a 24 hour period to allow the oil to soak in. Then take a Heat Gun or Torch and heat the hub in back of the Blade. Try to NOT aim the heat towards the Stator Windings. Rotate the Blade slowly while applying heat. After awhile you will probably see some light smoke come from behind the hub and once you see that, you can again try to turn the Blade off. The Blade comes off in the direction the fan runs.
Good luck, I hope this helps.
John

Back To Top PMQuoteReply

 Posted: Thu May 7th, 2020 11:24 pm
  PMQuoteReply
9th Post
Steven Davis
Guest
 

Joined: Thu Apr 30th, 2020
Location: New York USA
Status: 
Offline
John Fengel wrote: Steven Davis wrote: What if i apply heat to the hub of the blade?
At this point, that's likely the best solution. First though, spray some penetrating oil down the SILVER TUBE on the back of the motor and then tilt the motor forward to allow it to soak into the threads. Do this a couple of times over a 24 hour period to allow the oil to soak in. Then take a Heat Gun or Torch and heat the hub in back of the Blade. Try to NOT aim the heat towards the Stator Windings. Rotate the Blade slowly while applying heat. After awhile you will probably see some light smoke come from behind the hub and once you see that, you can again try to turn the Blade off. The Blade comes off in the direction the fan runs.
Good luck, I hope this helps.
John

:clap: Success!!!

Thanks John!

I did as you recommended, used pb blaster and circulated it and let it soak for 24 hours, i did try and budge it after that and it wouldn't move.  I then hit it with a heat gun at the hub at the back of the blade evenly and as soon as it got hot it came off super easy.  


Back To Top PMQuoteReply  

 Posted: Fri May 8th, 2020 01:50 am
  PMQuoteReply
10th Post
John Fengel
AFCA Member


Joined: Mon Nov 14th, 2005
Location: Temple, Texas USA
Status: 
Offline
Good for you! Glad it worked.  John

Back To Top PMQuoteReply

Current time is 01:07 am  
AFCA Forums > Antique Fan Collectors Association > Post-1950 (Vintage) > 1951 Emerson 77646-AS stuck fan blade Top



Beige Theme By: Di @ UltraBB
UltraBB 1.17 Copyright © 2007-2008 Data 1 Systems
Page processed in 0.1606 seconds (14% database + 86% PHP). 32 queries executed.