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Oversize Wheel Bearing


 
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kingslandkid
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PostPosted: Tue Jan 24, 2023 7:49 pm    Post subject: Oversize Wheel Bearing Reply to specific post Reply with quote

On my Ford 545C loader tractor, I was replacing the front wheel bearings and found the original inside cup is .010 oversize on the o.d.. It is a Timken and has the same part number as the replacement bigger and the replacement fall into the hub bore. The only possible give away on the bearing is an "X" letter about 90 degrees from the part number. I've searched the internet for an answer and consulted my Timken bearing manual and found nothing. Has anyone ever ran into this situation. Short of using bearing mount to take up the clearance I'm contemplating using the old cone. In the bean time I will call a bearing supplier in Fort Wayne for advice. BTW I have 4 of these X45 series tractors and have never encountered this except when I overhauled my 3550 the machine shop doing the work called an said one of the cam bearing bores was way oversize. I went so far as calling FoMoCo in England and they said they never use oversize bearings in new engines. The machine shop said it had Ford's logo on the one they took out but threw it away before they realized it was custom fit to my engine. I realize that occasionally mistakes happen and fitting a non standard bearing to repair a block is common practice and maybe the same with the front hub. The hub on a 545 is the big one with 8 bolts so it's probably worth repairing with an oversize bearing but where would I ever get a replacement? I just wish Ford would have acknowledged the practice.
 
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Sean in PA
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PostPosted: Wed Jan 25, 2023 4:51 am    Post subject: Re: Oversize Wheel Bearing Reply to specific post Reply with quote

Quote:
I went so far as calling FoMoCo in England


How long ago was that? FoMoCo has had nothing to do with tractors since around 1991, when they sold their tractor operations to Fiat. Fiat was allowed to use the Ford name for a few years after that, but the Ford Motor Company ever had anything to do with tractors after that.
 
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showcrop
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PostPosted: Wed Jan 25, 2023 5:28 am    Post subject: Re: Oversize Wheel Bearing Reply to specific post Reply with quote



My 1971 9000 had three different bearing sizes. Blue, red, and plain. It was explained to me that during assy. the tech would select from the assortment to get the best fit. I had to purchase two bearing sets to get the correct, clearance.
 
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kingslandkid
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PostPosted: Wed Jan 25, 2023 5:52 am    Post subject: Re: Oversize Wheel Bearing Reply to specific post Reply with quote

Sean in PA wrote:
(quoted from post at 05:51:45 01/25/23)
Quote:
I went so far as calling FoMoCo in England


How long ago was that? FoMoCo has had nothing to do with tractors since around 1991, when they sold their tractor operations to Fiat. Fiat was allowed to use the Ford name for a few years after that, but the Ford Motor Company ever had anything to do with tractors after that.


When I overhauled the engine would have been in 1984-1985 time frame. Tractor is a 1974 and still have it.
 
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wp6529
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PostPosted: Wed Jan 25, 2023 8:15 am    Post subject: Re: Oversize Wheel Bearing Reply to specific post Reply with quote

My vote would be to use retaining compound and 0.005" shim stock and move on to more important things. I might be more concerned if it were in a high speed area, but a tractor wheel bearing shouldn't be that critical as long as it's not flopping around in the bore.
 
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Check Break
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PostPosted: Wed Jan 25, 2023 3:21 pm    Post subject: Re: Oversize Wheel Bearing Reply to specific post Reply with quote

kingslandkid wrote:
(quoted from post at 20:49:22 01/24/23) On my Ford 545C loader tractor, I was replacing the front wheel bearings and found the original inside cup is .010 oversize on the o.d.. It is a Timken and has the same part number as the replacement bigger and the replacement fall into the hub bore.


Timken is no longer what it used to be. I'd try another brand of bearing, preferably Japan or EU, before I went with Plan B.
 
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wp6529
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PostPosted: Thu Jan 26, 2023 3:54 am    Post subject: Re: Oversize Wheel Bearing Reply to specific post Reply with quote

Check Break wrote:
(quoted from post at 19:21:06 01/25/23)
kingslandkid wrote:
(quoted from post at 20:49:22 01/24/23) On my Ford 545C loader tractor, I was replacing the front wheel bearings and found the original inside cup is .010 oversize on the o.d.. It is a Timken and has the same part number as the replacement bigger and the replacement fall into the hub bore.


Timken is no longer what it used to be. I'd try another brand of bearing, preferably Japan or EU, before I went with Plan B.


Since the oversize is the apparent original bearing on an old tractor, presumably it dates from when Timken was what it was.
 
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