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09-28-2020, 12:07 PM | #1 |
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throw-out bearing
The Model A kingdom may recall that 10-15 years ago Aetna throw-out bearings were carried by all the suppliers and they usually failed within a hundred miles. Well, they are back, but this time they are in a Timken box, so beware, what goes around comes around.
Tom Endy |
09-28-2020, 12:41 PM | #2 |
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Re: throw-out bearing
Thanks for the heads up.
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09-28-2020, 02:55 PM | #3 |
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Re: throw-out bearing
Tom, on the bearing does it say Timken or Aetna?
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09-28-2020, 02:57 PM | #4 |
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Re: throw-out bearing
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09-28-2020, 04:20 PM | #5 |
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Re: throw-out bearing
I just received some transmission bearings from a reputable Model A supplier. The boxes said Timken, the bearings said Fafnir, Turkey.
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09-28-2020, 11:10 PM | #6 |
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Re: throw-out bearing
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09-29-2020, 04:42 AM | #7 | |
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Re: throw-out bearing
Quote:
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09-29-2020, 10:49 AM | #8 |
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Re: throw-out bearing
I might have received one of these bum bearings. Just reinstalled my recently rebuilt transmission and after only about 10 miles of driving it's already starting to squeal.
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09-29-2020, 11:00 AM | #9 |
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Re: throw-out bearing
That's surprising. When I pulled my transmission out it had an Aetna throw out bearing. Never gave any trouble. It probably was 30+ years old though, might have been better built then.
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09-29-2020, 11:15 AM | #10 |
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Re: throw-out bearing
I haven't bought a throw-out bearing in 50 years! When I pull a trans, I pack the bearing with wheel-bearing grease, using a wheel bearing packer.
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09-29-2020, 11:47 AM | #11 | |
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Re: throw-out bearing
Quote:
Bought it from a well respected barner, along with a set of Mark's transmission shafts and gears. As always, time will tell.....
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09-29-2020, 05:43 PM | #12 |
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Re: throw-out bearing
Just ordered new clutch, pressure plate, pilot bearing and throw out bearing yesterday. Hope they don't send me one of those bearings.
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09-29-2020, 11:01 PM | #13 | |
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Re: throw-out bearing
Quote:
Do you mean that brand is back, or do you mean bearings fail within a few hundred miles are back. Have you witnessed this bearing failure recently? |
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09-30-2020, 10:37 AM | #14 |
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Re: throw-out bearing
What drives me crazy are the people who sit at a red light for 5 minutes with their big foot on the clutch pedal. Of course in a car you can't really tell but I see guys on motorcycles all the time with the clutch leaver pulled in. I just think candy ass newbe.
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09-30-2020, 07:07 PM | #15 | |
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Re: throw-out bearing
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I guess I'm one of those motorbike guys. I've only been riding 60yrs. Some day I might figure it out. |
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10-01-2020, 06:58 PM | #16 |
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Re: throw-out bearing
And they’ll sit at a light going up hill and let the car roll back, then let the clutch out enough to go forward, then roll back again.
A couple of weeks ago I put a new throw out bearing in a ‘46 Mercury. The model A bearing goes to ‘48 on cars, later on Mercs and ‘56 on trucks. I called C &G, they haven’t heard about it so I hope I’m safe. |
10-01-2020, 07:52 PM | #17 |
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Re: throw-out bearing
Tom Endy, Back about 20 years ago a friend of mine known for installing BW overdrives planned a trip to the National. He decided he wanted to replace his clutch disc and since he also had a brand new throwout bearing from Macs he decided to replace it as well. Well when the job was completed the new throwout bearing squealed worse than the old one. Aetna was in Chicago on the near northside. He took the bearing which was marked Aetna and they placed it on a lathlike machine which clamped the inner portion and applied pressure to the area which contacts the pressure plate fingers. It screamed. The Aetna employee did state that it indeed was marked Aetna, but was not their bearing. He asked my friend if he minded him cutting the bearing open and since my friend had no objection, it was cut open. Result; Inferior junk for materials. Bearings were being made in India and other third world countries and goin so far as even copying Aetna's logo. Spend the money and buy the better throwout bearings.
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10-01-2020, 09:53 PM | #18 | |
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Re: throw-out bearing
Quote:
The problem here is Aetna bearings are now showing up in the boxes of other quality bearing manufactures. years ago the Aetna problem was solved for me by the supplier I use almost exclusively. He began stocking throw-out bearings made by Federal Mogul. They are made in Mexico, but they were good quality bearings and I have been using them exclusively ever since without a problem. About eight months ago I received some Federal Mogul bearings that I could not turn by hand. I contacted my favorite supplier and he checked several in his stock and confirmed what I had found. I returned the ones I had and the supplier returned his inventory to his supplier. The replacement inventory he received was the same. He returned them and went looking for another throw-out bearing source. He found a supplier that could offer Timken throw-out bearings, so he ordered and stocked them. Inside the Timken boxes the bearings have Aetna stamped on them. So, are they truly made by the legitimate Aetna company, if they still exist, or are they the junk bearings of yesteryear. Good luck with that one. I for one will never install a throw-out bearing that has Aetna stamped on it. Tom Endy |
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10-01-2020, 10:12 PM | #19 |
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Re: throw-out bearing
What....?
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10-02-2020, 05:56 AM | #20 |
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Re: throw-out bearing
There was a problem with very stiff bearings from Fed-Mogul/National about 1-2 years ago. We quickly pulled our stock and hand tested them all. We ended up returning a large quantity and reordering. Had a high failure rate on the next batch. Then things rapidly improved and we haven’t seen the issue for over a year now. The company is so big that you can’t find anyone to speak with to discuss the problem, but apparently they figured out what it was and the bearings are back to normal again.
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10-02-2020, 08:03 AM | #21 |
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Re: throw-out bearing
Maybe the idiots are making BOGUS Timken and Federal Mogul/National boxes?
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10-02-2020, 02:02 PM | #22 |
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Re: throw-out bearing
It appears that they still exist, and still located on Sesame Street!
https://www.aetnabearing.com/product.../aetna-clutch/ .
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10-02-2020, 03:27 PM | #23 |
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Re: throw-out bearing
Can you still get a throwout bearing with a grease zerk on it. One shot every 500 miles it would probably last forever.
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10-02-2020, 04:28 PM | #24 |
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Re: throw-out bearing
I have never heard of Aetna bearings! Reading between the lines in these posts, am I correct in saying they are American made and used to be good quality but not so now or someone is impersonating them?
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10-02-2020, 06:05 PM | #25 |
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Re: throw-out bearing
deleted
Last edited by Benson; 10-02-2020 at 06:11 PM. |
10-03-2020, 01:23 PM | #26 |
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Re: throw-out bearing
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10-05-2020, 03:00 AM | #27 |
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Re: throw-out bearing
I have one of those throwout bearings .It has Made in USA & Aetna stamped on the back
it is new in it's plain white box but bought several years ago . I was just thinking of useing it but maybe that is not a good idea . I would hate to do the job over |
01-11-2021, 06:13 PM | #28 |
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Re: throw-out bearing
Now I am worried. I am going to change it for a Federal Mogul bearing.
I just ordered a NAPA N1087 Tbearing. The box says SKF. The bearing says A-2256 Aetna USA. Last edited by old31; 01-12-2021 at 10:00 AM. |
01-12-2021, 10:17 AM | #29 |
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Re: throw-out bearing
Which way is the throw-out bearing suppose face in the bearing collar? Round side in to the collar, or larger flat side in towards the collar?
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01-12-2021, 10:56 AM | #30 |
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Re: throw-out bearing
I have never used Aetna bearings that I know of (dang it, now I am going to have to check my stash...) but I have to wonder how they have remained in business all these years if their bearings are so bad?? Their website states they opened in 1916, over 100 years ago??
Last edited by Y-Blockhead; 01-12-2021 at 11:43 AM. Reason: Spellin' |
01-12-2021, 11:05 AM | #31 |
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Re: throw-out bearing
Round side to the rear, flat side to the front, like in your 2nd picture.
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01-12-2021, 01:00 PM | #32 |
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Re: throw-out bearing
I have seen 10 or 12 noisy Aetna bearings in different cars (ie not all in one car) in the last 15 years.
Every bad bearing was stamped "AETNA" just one word. so maybe these are the junk "INDIA" bearings. Recently I found a used throw out bearing which looks very old and is greasy. It was in an engine that had not been running in years. It is stamped: "Aetna Ball Bearing Manufacturing Co. A-7580-B 3" NOT just "AETNA" NOTE: Unlike the new T. O. Bearings, this bearing is open on the ID so grease can get inside bearing when the Zerk on the "bearing carrier" is used to apply grease. Maybe this is a genuine Aetna bearing? Last edited by Benson; 01-12-2021 at 03:23 PM. |
01-12-2021, 01:05 PM | #33 | |
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Re: throw-out bearing
Quote:
That's like the one that was in my car, same stamping. Never gave any problems. I almost reused it since it felt better than the new FM bearing. |
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01-12-2021, 01:20 PM | #34 | |
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Re: throw-out bearing
Quote:
Last edited by Benson; 01-12-2021 at 02:52 PM. |
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01-12-2021, 03:08 PM | #35 |
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Re: throw-out bearing
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01-12-2021, 03:08 PM | #36 |
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Re: throw-out bearing
The bottom line is, why would we test our luck with Aetna when there are good manufactures out there.
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01-23-2021, 04:05 PM | #37 |
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Re: throw-out bearing
Please don't tell me I have to tear everything apart again. What are your thoughts.
I installed a new National BCA 2065 bearing and a new centerforce clutch disk, similar to my old disk. Except this disk was improved because it had caged springs, the old one did not. Clutch has 1 to 1-1/2 " play. When the car is not running I can easily spin the bearing with my fingers, so it is not touching the clutch fingers. As you can see in the video I have some noise at idle but as soon as I slowly press the clutch it gets very screechy. https://youtu.be/elGFs-P9GFg |
01-23-2021, 07:14 PM | #38 |
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Re: throw-out bearing
Have you checked the starter bolts to long, ring gear moved and/or to much crank end play.
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01-23-2021, 10:48 PM | #39 |
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Re: throw-out bearing
The starter bolts are the same as I had before.
But, I would think that if I had to long a bolt the noise would be the same all the time, and not just get louder when you press in the clutch. I checked the ring gear earlier and it was good. I used a centering tool to install the pressure plate. All of the bolts were torqued. |
01-24-2021, 08:29 AM | #40 |
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Re: throw-out bearing
After a premature TO bearing fail I had purchased from Snyders along with PP and Clutch. I called Mac and he patiently explained the problems as described here.,they hand picked a bearing and yoke and shipped promptly. I highly recommend Vanpelt.
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01-24-2021, 08:47 AM | #41 |
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Re: throw-out bearing
Nose, what brand bearing did they send you?
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01-24-2021, 09:06 AM | #42 |
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Re: throw-out bearing
Is the throwout bearing suppose to be pressed on the bearing collar or does it just easily slip on the collar? Mine slipped on.
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01-24-2021, 09:40 AM | #43 |
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Re: throw-out bearing
They're supposed to be pressed on. Mine was - it sounds like your bearing is rotating on the collar.
If it were mine, I'd just get some shim stock (unless it is ruined too much with uneven surface), wrap the collar with the shim (take a few test runs for fit) heat the bearing with a propane torch to where you can just hold it and tap it on with a soft-faced mallet. My bearing was fitted tight to the collar, but I was able to heat it as above (with the collar still cold) and tap it off. Installing the new bearing I used the same process. I have a press, but the odd collar shape made for too much work (yes, I look for the easy way out) and this method works very well for a variety of applications. Last edited by kawagumby; 01-24-2021 at 03:02 PM. |
04-14-2021, 09:03 PM | #44 |
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Re: throw-out bearing
Try sourcing BCA/F.B.C.FAG/FEDERAL (O.E.M. supplier to Ford)/GREEN/RHP/SKF.Even the japanese made clutch bearings are better then some so called "USA" made bearings I didn't know/wasn't aware Fafnir was being made in Turkey.BEWARE of bearings that have NO brand/part number or if it's etched on they're inferior quality (either chinese made or indian).We procure/source/stock/supply either euro/jap/uk/us made clutch bearings.
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04-15-2021, 10:53 AM | #45 |
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Re: throw-out bearing
Apparently this is a larger issue not specific to our throwout bearings.
I ordered a set of bearings for a motorcycle engine a few years back, parts came from England. The package got red flagged while going through customs and held up for weeks while the custom agent interviewed myself and the supplier. Turned out they had marked the package as containing "engine bearings". I guess that was one of those "dog whistle" terms due to a large influx of inferior, bootleg import bearings marked as legit-brand items that was having a huge impact on all sorts of industries. Thought that was interesting and probably the same scenario as to what we're seeing here. |
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