james750 Posted November 13, 2009 Share Posted November 13, 2009 Will the unit bearing off of an 89 or 90XJ work on a 97XJ? I have an old but good unit bearing off of my truck when it had the original axles under it and need a new one for my 97 axle. I have an early production 90 and I am not sure if it had 89 or 90 unit bearings. Is there a way to tell the difference between 89 and the 90's if they are different? If it is a 90 unit bearing would it be compatible with the 97? As always, Thanks in advance -James Link to comment Share on other sites More sharing options...
johnnyc Posted November 13, 2009 Share Posted November 13, 2009 No. There were three different unit bearings. 87-90, 90-mid 99, and mid 99-01. You can use any of the three, BUT you must also use the corresponding rotor. Mixing and matching unit bearings and rotors is a no-no. And I have first hand knowledge of this. ;) Link to comment Share on other sites More sharing options...
james750 Posted November 13, 2009 Author Share Posted November 13, 2009 So, if I have 90 unit bearings I am good to go on the 97 axle. How do I tell if I have an 89 or a 90 unit bearing? Link to comment Share on other sites More sharing options...
Eagle Posted November 13, 2009 Share Posted November 13, 2009 You should find the answers to your questions here: viewtopic.php?f=2&t=7658&hilit=hub+bearing+assembly Link to comment Share on other sites More sharing options...
james750 Posted November 13, 2009 Author Share Posted November 13, 2009 my old ones have the rounded hat, so they should work. Link to comment Share on other sites More sharing options...
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