CharlieB Posted October 5, 2007 Share Posted October 5, 2007 I need to replace the front oil seal on my diff. How can I tell if it has a collapsible spacer or shims before I remove the nut.It's a 3.89 & the nut has pink paint on it no: FH65334 Link to comment Share on other sites More sharing options...
Clive Posted October 5, 2007 Share Posted October 5, 2007 I "think" the 3.89 are shims. Link to comment Share on other sites More sharing options...
CharlieB Posted October 5, 2007 Author Share Posted October 5, 2007 So do I but I'd like to be sure. Link to comment Share on other sites More sharing options...
Nick Jones Posted October 5, 2007 Share Posted October 5, 2007 As original the collapsible spacer diffs had a pressed metal cap over the pinion nut. Any collapsible spacer can (and should IMO) be rebuilt with shims. I don't think you can generalise on ratios; some 3.89s and 3.27s could have collapsibe spacer and many 3.63 will, but not all. Don't think any 4.11 would have but don't really know!NickEdit, to change the seal you mark the relative positions of nut and shaft (centre pop or similar). Then count the turns (exactly!!) to come off. Refit the same turns until the marks match..... if you dare! Link to comment Share on other sites More sharing options...
CharlieB Posted October 6, 2007 Author Share Posted October 6, 2007 Ok that's pretty conclusive, thanks. I've also found one output shaft has a lot of end float so I suppose that means new output bearings as well, ho hum. Link to comment Share on other sites More sharing options...
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