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Old 08-09-2007, 06:21 PM
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"tapered" rear axel bearing question

I'm installing a set of aftermarket brakes, (Baer), and new axle bearings on a mid 70's Lincoln Versaille rear axle and replacing the original bearing retainer/ caliper bracket with the new bracket that comes with the Baer brake kit.

This axle has tapered bearings with an external seal, (Timken set 20). I was told that there is a preload value for installing this bearing into the housing, and it was measured in inch pounds of bearing drag. I was also told that the preload is adjusted by shimming the bearing retainer out until the correct bearing preload is obtained.

My question is, what is the bearing preload value for a new bearing?

I have several books that cover the cars that rear end came in , as well as a model specific Haynes manual for all the RWD Lincolns, but none of them cover that bearing installation

Also, what is a good sealer to use on this setup. The bearing has a seal around the outside of the race, but it doesn't look like it will do the job by itself. I am inclined to use some Loctite 515 or maybe some silicone but would like to know if there is anything better suited for this application..

Thanks for reading this, Mikey

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Old 08-10-2007, 02:50 PM
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Quote:
Originally Posted by powerrodsmike
I'm installing a set of aftermarket brakes, (Baer), and new axle bearings on a mid 70's Lincoln Versaille rear axle and replacing the original bearing retainer/ caliper bracket with the new bracket that comes with the Baer brake kit.

This axle has tapered bearings with an external seal, (Timken set 20). I was told that there is a preload value for installing this bearing into the housing, and it was measured in inch pounds of bearing drag. I was also told that the preload is adjusted by shimming the bearing retainer out until the correct bearing preload is obtained.

My question is, what is the bearing preload value for a new bearing?

I have several books that cover the cars that rear end came in , as well as a model specific Haynes manual for all the RWD Lincolns, but none of them cover that bearing installation

Also, what is a good sealer to use on this setup. The bearing has a seal around the outside of the race, but it doesn't look like it will do the job by itself. I am inclined to use some Loctite 515 or maybe some silicone but would like to know if there is anything better suited for this application..

Thanks for reading this, Mikey
Powerrodsmike sorry I can't help you just wanted to bump you back to the top to see if someone can you'v got a good question.
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Old 08-10-2007, 04:09 PM
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Mikey,
I looked over the Timken site and found exactly nothing that may help here..Call timken to see what they say..Other than that just install them with a slight drag like we do the fronts..I am sure there is some value for that as well but beats me what it is..I always have just run them down tight and then backed off about two or three flats but then that is the shade tree sort of deal..

Sam
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Old 08-10-2007, 04:47 PM
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Thanks Sam, and 'T 25

I looked at the Timken site last night and got nothing as well, then I looked at another factory Ford manual and it had nada.
I have a Timken Bearing Dimension catalog, but although it has design specs that tell you how much of an interferance fit (tightness) it should have on the shaft and how round the shaft and race bore need to be, but they have no adjustments or preload specs. I emailed Timken but I doubt that I'll ever see any response.

I'm thinking that with the bearing and seal installed, and the retainer bolts finger tight, so there is no endplay, I get about 4 inchpounds of bearing drag...(it's probably just the seal), If I tighten up the retainer plate all the way, I see about 35 inch pounds of drag, which IMO is too much. I was thinking more like 8 -12 inch pounds.

I got a bunch of shims from Mcmaster carr today, so I'll stack some up under the retainer 'til I can see that preload.

Unless someone can tell me I need to do it differently, I'll go shadetree on it..

Later, mikey
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