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10-26-2019, 06:09 AM | #1 |
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Multipule disc clutch pilot bearing
Was the multiple disc clutch pilot bearing the same as that used with the single disc clutch?
Thank you. Steve Plucker Last edited by Steve Plucker; 10-26-2019 at 06:19 AM. |
10-26-2019, 09:43 AM | #2 |
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Re: Multipule disc clutch pilot bearing
According to Bratton's catalog, the multi-disk clutch did not use a pilot bearing.
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10-26-2019, 09:46 AM | #3 |
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Re: Multipule disc clutch pilot bearing
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10-26-2019, 10:54 AM | #4 |
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Re: Multipule disc clutch pilot bearing
Ford parts lists says: A-7118-A Transmission main shaft pilot bearing 1928-31
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10-26-2019, 11:01 AM | #5 |
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Re: Multipule disc clutch pilot bearing
Misread original question.
Bob Last edited by Bob C; 10-26-2019 at 11:57 AM. |
10-26-2019, 11:52 AM | #6 | |
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Re: Multipule disc clutch pilot bearing
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Quote:
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10-26-2019, 11:56 AM | #7 |
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Re: Multipule disc clutch pilot bearing
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10-26-2019, 03:11 PM | #8 |
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Re: Multipule disc clutch pilot bearing
Well I goofed up also. The bearing # I gave is for the Main shaft which is the shaft inside the cluster gear.
Parts list shows: A-7600-A is the clutch pilot bearing 1928-31. IIRC that's a 6203 bearing.
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10-26-2019, 04:49 PM | #9 |
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Re: Multipule disc clutch pilot bearing
A very common use bearing, even my Ferguson tractor used it.
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10-29-2019, 03:59 PM | #10 |
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Re: Multipule disc clutch pilot bearing
Big green book ALSO shows a pilot bearing page 346 P/N 70-7600-B called "OILITE"
I believe that this might have been an Oilite bushing ... along with a felt washer P/N A-7608 and a retainer A-7609-A. Footnote says that felt is "no longer supplied" Last edited by Benson; 10-30-2019 at 04:15 PM. Reason: grammer |
10-29-2019, 04:17 PM | #11 |
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Re: Multipule disc clutch pilot bearing
On side note:
Bearing 6203 was also used on various IBM machines over the years. |
10-29-2019, 04:26 PM | #12 |
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Re: Multipule disc clutch pilot bearing
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10-30-2019, 10:28 AM | #13 |
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Re: Multipule disc clutch pilot bearing
I have a couple of those bearings in the bottom of my toolbox, been there for years, came out of flathead V8s. I'll try and remember to get a picture later today.
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10-30-2019, 03:18 PM | #14 |
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Re: Multipule disc clutch pilot bearing
Here's a picture of the "oilite" bearings along w/a used 6203. They don't say Ford on them so maybe they're aftermarket replacements? I always kinda assumed that they were bronze. The 6203 looks smaller in the picture, but they're all the same size.
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11-18-2023, 02:53 PM | #15 |
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Re: Multipule disc clutch pilot bearing
Picking up a four year old thread.
The multi-disk clutch assembly I just brought home has a typical Model A pilot bearing. It's marked FEDERAL 1203 (numbers obscured) but measures out the same as the Model A. Shield on one side. Fits the shaft on the odd Multi-disk tranny input shaft. Fits the hole in the multi-disk flywheel. No spacers or felts. Joe K
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11-19-2023, 12:28 PM | #16 |
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Re: Multipule disc clutch pilot bearing
They are generally phosphor bronze bushings but it depends on what company manufactured them. Oilite is a trade name product that is made from various materials depending on application. It has the look of tiny bits of copper-tin alloy that are compressed an fused together to give it a matrix that will hold a lubricant. Iron and graphite are also in the mix for some applications.
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11-20-2023, 02:33 PM | #17 |
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Re: Multipule disc clutch pilot bearing
I don't want to hijack the thread but my 1930 phaeton (single clutch disc) sometimes slips out of 2nd .I'm convinced it's slackness at the pilot bearing (after having replaced everything else!) Can someone confirm the shaft diameter should be .668 inch dia (16.972 mm) and the pilot bearing is Bearing # 6203, 17mm ID, 40mm OD ,12mm wide.. There seem to various types of 6203 - Rubber seal, metal seal, open, deep groove etc. which type should it be ?
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11-20-2023, 03:33 PM | #18 | |
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Re: Multipule disc clutch pilot bearing
Quote:
The multi-plate I'm playing with now has a "Federal 1203" bearing - it has a metal shield on ONE side. No felt as I found it. I'm not convinced it is the original bearing as the '31/'32 parts list show an "open" bearing with a felt pad where the shaft passes from the clutch area. I'm not sure it matters the method this is sealed. Seal want to be on the "clutch" side to evade the "disk dust." Some seal or method, even the felt, is probably recommended. The single metal seal makes sense and would have been thought superior once seal/shield technology became more common. I might opine that a "rubber" seal will probably afford you better sealing, but at the downside of "resistance" to turning - and this is one of those bearings if for some reason it "hangs up" would be detrimental to transmission/clutch alignment. The interference between the shaft and the bearing bore is not "drive tight" (although I have made it such by clamping a vise-grip around the shaft BEFORE assembly.) But even a shaft upset using vice grips is not a guaranteed "forever." Maybe go with the metal shield one side as this one was? Grease up the open side as you install? Bush the shaft portion to build it up or buy a new input shaft/gear. (I've done both.) Parts suppliers seem to provide this bearing with "seals both sides." The seals are plastic but they might not have rubber edge that rubs against the inner bearing. Worth asking your supplier. "Sealed for life" is where bearings generally have gone. And plastic/rubber covers CAN be removed with an awl. You might not want to? Best Joe K
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11-20-2023, 04:24 PM | #19 |
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Re: Multipule disc clutch pilot bearing
Thanks for comprehensive reply Joe. I am not convinced that our suppliers either side of the Atlantic always keep the highest quality parts. Which is why I am considering getting a known bearing from a bearing depot over here rather rather than just ordering a generic A-7600-A or B-7600-A from a Model A parts supplier (The last A 7600A I bought from a reputable major Ford A supplier was made in China). Whatever... I'd rather spend a few pounds/dollars/euros extra on a high quality bearing rather than have to remove the engine and transmission for the nth time !!
Last edited by johnbuckley; 11-22-2023 at 11:49 AM. |
11-20-2023, 07:21 PM | #20 |
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Re: Multipule disc clutch pilot bearing
Is the sealed ball bearing preferred over the bronze "Oilite" bushing?
Just curious what the masses prefer and why?? |
11-20-2023, 08:09 PM | #21 |
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Re: Multipule disc clutch pilot bearing
I prefer to use the 6203-2RS, which is with 2 rubber seals. The 6203-RS which is w/one rubber seal could be used with the open side towards the crankshaft. The bearings with metal shields are just that, shields, not seals.
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11-21-2023, 10:37 AM | #22 |
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Re: Multipule disc clutch pilot bearing
If the vehicle is stored more than driven, I gravitate toward the bushings for pilot bearings. When I install one, I put grease in the pocket of the crankshaft to give it a bit more life. I never have to worry about the corrosion and seizure that can happen with ball bearings that set around too much. This is just my own preference. Others may not agree and that's fine with me.
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11-21-2023, 05:44 PM | #23 |
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Re: Multipule disc clutch pilot bearing
Its interesting to scan the Internet and see the various solutions to pilot bearing that have been tried. Roller bearings, bushings, teflon, nylon. Each generation seems to have developed an "improvement" to a bearing of dimensions/application for the Ford flywheel "pocket."
Almost tempting in a way. Except it IS a lot of work to pull an engine to make the change/reversion if found unsuccessful. Google Bearing 6203. The options are legion. Joe K
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