Area Representative Kingsley Young Posted July 1, 2018 Area Representative Share Posted July 1, 2018 The diff nose oil seal appears to have a weep on it, can the seal be replaced with the diff still on the car by dropping the prop shaft or is it diff out job ?Kingsley. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted July 1, 2018 Member Share Posted July 1, 2018 Which axle and diff?Discussion of doing it in situ with a Sierra diff.Jonathan Link to comment Share on other sites More sharing options...
DJ. Posted July 1, 2018 Share Posted July 1, 2018 I had a drip from the pinion oil seal on my first Sierra diff from new, then replaced it with a rebuilt one to try and cure the whining. The new one dripped and whined in exactly the same way I couldn't face removing the diff again, so just decided to top it up every 2000 miles. It hasn't got any worse in 35000 miles, in fact the last couple of times I checked the level, it didn't need oil, so it may be getting better.It might be an idea to just keep an eye on the level and see how it goes, unless you have a driveway that will be damaged by oil. I have to admit that I do ask friends if they mind before I drive my Seven onto their property.Duncan Link to comment Share on other sites More sharing options...
Wrightpayne Posted July 1, 2018 Share Posted July 1, 2018 You cannot remove the prop with the diff in place on a dedion. The tunnel is really tight and its a tough job to get the old seal out and new one in square with it on the bench so doing in the car will be a challenge.If you have flexible hoses on the back you wont even have to bleed the brakes.Interesting the previous thread mentions using RTV sealant as it can leak down the splines. If it was just this to try and cure the leak I’d have a go in situ by removing lower bolts and twisting it down.Ian Link to comment Share on other sites More sharing options...
Area Representative Kingsley Young Posted July 1, 2018 Author Area Representative Share Posted July 1, 2018 Jonathan The diff is from the Sierra, it was rebuilt by Phil at road and Race 18 months ago but I have only covered 5000mls since then. Link to comment Share on other sites More sharing options...
John Vine Posted July 1, 2018 Share Posted July 1, 2018 ...it was rebuilt by Phil at road and Race 18 months ago but I have only covered 5000mls since then. IME, Phil's work is first class, so your experience surprises me. Have you asked Phil for his opinion?JV Link to comment Share on other sites More sharing options...
7 wonders of the world Posted July 1, 2018 Share Posted July 1, 2018 Silent and dry final drives can be had from Steve herehttps://www.tracsport.com/ Link to comment Share on other sites More sharing options...
Area Representative Kingsley Young Posted July 1, 2018 Author Area Representative Share Posted July 1, 2018 John I would totally agree,I’m not looking to blame in any way , these things happen , he has done work for me in the past always happy with whatever he has done. Kingsley. Link to comment Share on other sites More sharing options...
Wrightpayne Posted July 2, 2018 Share Posted July 2, 2018 7WOW,Both diffs I’ve had rebuilt by SPC have weeped from the input seal after very few miles.I guess TADTS!Ian Link to comment Share on other sites More sharing options...
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