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Diff Nose Bearings


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Hi all,

I've recently replaced both of my 10spline diff's on my 90 (just to note i'm running 1" lift). From what I can tell they both seem to have gone in the same place - the bearing that sits at the end of the diff closest to the prop-shaft. The diff's work fine but obivously vibrate loads because the bearings have colapsed. Few questions: 1) Does this sounds like a reasonable explanation to what has happend, is it a common problem? 2) Can they be changed by a moderatly competant DIY mechanic in a workshop? 3) If so, does anyone know the part numbers for the correct bearings? Any help/guidance would be great. Just got them sitting around at the moment so would be nice to have them as useable spares.

Cheers

Tom

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Are you really sure that the pinion bearings are the cause of your vibration ? .........these bearings in the rover diffs last a very long time, I don't think I have ever seen one collapse..............you would be very unlucky indeed for this to happen on both front & rear !

The actual bearing is very easy to change .............. really you need a press, but it can be accomplished by hand tools and a little care. However, on reassembly the pinion height will need to be set (due to the change of bearing) and you will need to measure the correct shim thickness required (IIRC there are 18 shim thicknesses) ..........once the height is set, then its just an standard diff build with setting the correct backlash on the crown wheel..........

To be honest, its not a job I would bother with on a 10 spline axle ...................these diffs can be got for very little money ............I guess the pinion bearing would cost more.............

Can you post a picture of the collapsed bearing ?

:)

Ian

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Are you really sure that the pinion bearings are the cause of your vibration ? .........these bearings in the rover diffs last a very long time, I don't think I have ever seen one collapse..............you would be very unlucky indeed for this to happen on both front & rear !

The actual bearing is very easy to change .............. really you need a press, but it can be accomplished by hand tools and a little care. However, on reassembly the pinion height will need to be set (due to the change of bearing) and you will need to measure the correct shim thickness required (IIRC there are 18 shim thicknesses) ..........once the height is set, then its just an standard diff build with setting the correct backlash on the crown wheel..........

To be honest, its not a job I would bother with on a 10 spline axle ...................these diffs can be got for very little money ............I guess the pinion bearing would cost more.............

Can you post a picture of the collapsed bearing ?

:)

Ian

Cheers Ian, the diff's have done about 160,000 miles so are fairly old. Yes your rite it could be something more serious than the bearings collapsing. Equally if the bearings cost more than a 2nd hand replacment then there isnt much point in replacing them, perhaps i'm just better off getting scrap money for them then buying a 2nd spare one.

Thanks for the advice, much appreciated!

Tom

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