Rear axle - Hyatt bearing clearance.

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Model T Ford Forum: Forum 2013: Rear axle - Hyatt bearing clearance.
Top of pagePrevious messageNext messageBottom of page Link to this message  By Bud Holzschuh - Panama City, FL on Friday, September 20, 2013 - 05:34 pm:

Chaffin's book on the rear axle does not give a value for clearance between the hyatt bearings and the sleeves (inner or outer).

My Hyatt bearings are good (all within spec) however when you slip them in the sleeves (axle not in yet), there's a fair amount of clearance (the outer sleeves are almost new).

So, is there a clearance figure or just snug fit, loose fit, generous fit ?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kerry van Ekeren (Australia) on Friday, September 20, 2013 - 05:38 pm:

you will need the axles in to feel what clearance you have.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dan Treace, North FL on Friday, September 20, 2013 - 05:38 pm:

You need the axle in place to push on the Hyatt rollers, then the rollers will contact the inner sleeve surface.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bud Holzschuh - Panama City, FL on Friday, September 20, 2013 - 08:34 pm:

Duh! ;o(

Thanks


Top of pagePrevious messageNext messageBottom of page Link to this message  By Larry Smith on Saturday, September 21, 2013 - 09:46 am:

If the rear end is apart, it's a good idea to check the housings for straightness. 9 out of 10 of them are bent!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Glen Chaffin on Monday, September 23, 2013 - 07:43 pm:

Bud, The bearing clearance is a big variable. The problem is the axle housings. The holes where you install the sleeves vary in diameter by at least 0.020 in.. I have the figures that I have measured but can't find them now. Some bearings are tight, some are loose. Apparently Ford didn't care. You can mix and match to get the fit you want. That's your only choice.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bud Holzschuh - Panama City, FL on Monday, September 23, 2013 - 09:53 pm:

Larry

Straight housings - the only thing that was OK on this rear end rebuild!!

Glen

Thanks for the info. With the axles installed, everything seems pretty tight

All buttoned up now - just the U joint pin to install!


Top of pagePrevious messageNext messageBottom of page Link to this message  By ex trooper on Monday, September 23, 2013 - 10:24 pm:

Put the bearing on the shaft with a hose clamp and measure it in several places, The measure the ID oh the race. Don't be surprised if theres .020 - .040 difference from one end to the other...


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