Gary Tackel Posted October 31, 2022 Share Posted October 31, 2022 I have the fan disassembled except for the pictured housing. The fan swivel that is attached to the bottom of the housing will only turn about 90 degrees, and I see no screws, etc. to release it. Is it permanently attached to the motor housing? Thanks, Gary Quote Link to comment Share on other sites More sharing options...
Patrick Ray Posted October 31, 2022 Share Posted October 31, 2022 The knuckle (piece on the far right) should just slide off the shaft at this point. Then to further disassemble it, there are 2 set screws and the spring loaded plunger retaining the oscillator collar to the knuckle. Quote Link to comment Share on other sites More sharing options...
Thomas Newcity Posted October 31, 2022 Share Posted October 31, 2022 (edited) The oscillator collar that Patrick mentioned is made of pot metal and quite fragile. You don't want to be applying any pressure to it. The knuckle is probably being difficult to remove because dried up old grease. Try loosening it with some PB Blaster through the 2 side holes. Also, check to see if the shaft is turning in that 90 degrees, which you can see on the inside of the housing. Edited October 31, 2022 by Thomas Newcity Quote Link to comment Share on other sites More sharing options...
Bill Dunlap Posted October 31, 2022 Share Posted October 31, 2022 Some of those pivots were also cast in pot metal. Not a great idea, imo. It may have deformed and trapped the shaft. Cheers, Bill Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted October 31, 2022 Share Posted October 31, 2022 I had one adjustment collar in recent past that was literally seized to the pivot. I could have soaked the adjustment collar (minus screws and pull plunger)/pivot assembly in PB Blaster for a month and it would have made no difference. I finally locked the pivot in a bench vice and heated the collar with a propane torch until the alloy collar started to bubble and with gloved hand wiggled it loose. I took the collar to the bench grinder with fine wire wheel and dolled it back up. Quote Link to comment Share on other sites More sharing options...
Gary Tackel Posted October 31, 2022 Author Share Posted October 31, 2022 4 hours ago, Thomas Newcity said: The oscillator collar that Patrick mentioned is made of pot metal and quite fragile. You don't want to be applying any pressure to it. The knuckle is probably being difficult to remove because dried up old grease. Try loosening it with some PB Blaster through the 2 side holes. Also, check to see if the shaft is turning in that 90 degrees, which you can see on the inside of the housing. Quote Link to comment Share on other sites More sharing options...
Gary Tackel Posted October 31, 2022 Author Share Posted October 31, 2022 Thanks for the replies - I'll try the PB Blaster 1st, before any of the other methods. I can see the top of the small shaft at the bottom of the fan housing- looks to be a tight fit. I noticed that the oscillator collar looked fragile - was afraid that it might even be made of a plastic material - I'm hoping that some of the lines that I see in it are cracks in the paint - and not in the pot metal itself. Quote Link to comment Share on other sites More sharing options...
Patrick Ray Posted October 31, 2022 Share Posted October 31, 2022 Inspect the collar for any cracks in the pot metal. Once a crack starts, just a matter of time before it's fully broken. Jerry Bravi makes beautiful replacements. Quote Link to comment Share on other sites More sharing options...
Gary Tackel Posted November 1, 2022 Author Share Posted November 1, 2022 Success! I soaked the joint in PB Blaster, put some in the hole above the shaft in the housing, and was able to pull it straight out. The collar has some casting fissures on the outside, but no cracks. I'll bet a new collar cast in brass is pretty expensive? Thanks for all the good information! Quote Link to comment Share on other sites More sharing options...
Malcolm MacGregor Posted November 2, 2022 Share Posted November 2, 2022 Jerry Brevi makes the collar. I think it’s around $70. It is a much better piece than the pot metal one. His is machined steel and is beautiful! 1 Quote Link to comment Share on other sites More sharing options...
Gary Tackel Posted November 2, 2022 Author Share Posted November 2, 2022 Thanks for the information - much less than I expected! Quote Link to comment Share on other sites More sharing options...
Paul Carmody Posted November 3, 2022 Share Posted November 3, 2022 Does Jerry have a site or only contact through the forum? Quote Link to comment Share on other sites More sharing options...
Patrick Ray Posted November 3, 2022 Share Posted November 3, 2022 31 minutes ago, Paul Carmody said: Does Jerry have a site or only contact through the forum? Message him through the forum. 1 Quote Link to comment Share on other sites More sharing options...
Malcolm MacGregor Posted November 3, 2022 Share Posted November 3, 2022 Here is something that happened to me. Just like your situation, I couldn’t get the pot metal collar off the pivot piece and I knew I was going to replace it with the one Jerry makes. What I didn’t realize was my pivot piece was made of pot metal too. Some are steel and some are pot metal. The new collar wouldn’t fit on my pivot piece because it had swollen over the years. I had to use a file to file the pivot piece down until the new collar finally fit.. something you may incur too! Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 3, 2022 Share Posted November 3, 2022 24 minutes ago, Malcolm MacGregor said: Here is something that happened to me. Just like your situation, I couldn’t get the pot metal collar off the pivot piece and I knew I was going to replace it with the one Jerry makes. What I didn’t realize was my pivot piece was made of pot metal too. Some are steel and some are pot metal. The new collar wouldn’t fit on my pivot piece because it had swollen over the years. I had to use a file to file the pivot piece down until the new collar finally fit.. something you may incur too! What type number was your example? Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 3, 2022 Share Posted November 3, 2022 12 minutes ago, Russ Huber said: What type number was your example? Is it possible yours was a big motor type Emerson? The big motor Emerson oscillator pivot on top where the adjustment case fits on is larger diameter than a small motor oscillator. The adjustment collar for the big motor Emerson oscillator is larger than the small motor collar. Quote Link to comment Share on other sites More sharing options...
Gary Tackel Posted November 4, 2022 Author Share Posted November 4, 2022 My 29668 must be the big motor - it has a 6 3/4" diameter housing, and a machined steel shaft Quote Link to comment Share on other sites More sharing options...
Malcolm MacGregor Posted November 4, 2022 Share Posted November 4, 2022 My issue was on a 21666. Actually it was the second 21666 I restored. It wasn’t an issue on my first one. Obviously a big motor. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 5, 2022 Share Posted November 5, 2022 6 hours ago, Malcolm MacGregor said: My issue was on a 21666. Actually it was the second 21666 I restored. It wasn’t an issue on my first one. Obviously a big motor. Yes. To look at the oscillator pivot/adjustment collar assembly on a large and small motor it is not obvious there is a size issue. The difference is but a few thousands of an inch regarding the small motor adjustment collar fit on a large motor pivot. I will try to post pictures tomorrow, or Sunday. The motor size differences are obvious. There are large motor 6 and 4 pole motors, and there are small motor 6 and 4 pole motors. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 5, 2022 Share Posted November 5, 2022 19 hours ago, Gary Tackel said: My 29668 must be the big motor - it has a 6 3/4" diameter housing, and a machined steel shaft Yes, big motor 6 pole. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 5, 2022 Share Posted November 5, 2022 Emerson big motor compared to the small motor. The big motor is a 21648 type#, and the small a 21646 type#. Both types are oscillating models, the 21646 motor housing is sans its gearbox. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 5, 2022 Share Posted November 5, 2022 Emerson BIG and small motor pivots. The adjustment collar is from the small motor 21646. Notice the small motor collar will not seat on the big motor pivot. 1 Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 5, 2022 Share Posted November 5, 2022 On 10/31/2022 at 1:28 PM, Russ Huber said: I had one adjustment collar in recent past that was literally seized to the pivot. I could have soaked the adjustment collar (minus screws and pull plunger)/pivot assembly in PB Blaster for a month and it would have made no difference. I finally locked the pivot in a bench vice and heated the collar with a propane torch until the alloy collar started to bubble and with gloved hand wiggled it loose. I took the collar to the bench grinder with fine wire wheel and dolled it back up. BTW....this is the pivot with adjustment collar on the left that was seized to the pivot I took the propane torch to release it. Quote Link to comment Share on other sites More sharing options...
Malcolm MacGregor Posted November 5, 2022 Share Posted November 5, 2022 Thank you for that helpful information👍 Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted November 5, 2022 Share Posted November 5, 2022 Jerry must offer one size in his reproduction adjustment collars, that being for the small motor? I have not had use for one as of yet, so I don't know. Quote Link to comment Share on other sites More sharing options...
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