MOJO90 Posted January 17, 2010 Share Posted January 17, 2010 I am replacing front output shaft oil seal and have read all the threads on the forum - some good help in there so thanks for that. All make the job seem very easy. The seal leak is not that bad but I have the box drained and thought it may be as worth doing at same time. I have removed propshaft bolts and can see big nut in middle but it seems to me that the flange and nut turn together. None of the threads really explain how to stop the flange from turning and I may chicken out if it's a major problem. Is there a special tool or some other way to hold the flange from turning? Anyone know what size is the nut on an old 1984 LT77 transfer box - and tightening torque? Thanks. Quote Link to comment Share on other sites More sharing options...
western Posted January 17, 2010 Share Posted January 17, 2010 try with the difflock engaged & transmission brake on, I think that's how I did mine a few years ago. Quote Link to comment Share on other sites More sharing options...
white90 Posted January 17, 2010 Share Posted January 17, 2010 30mm If I recall and if you have access to an Impact gun use that. Quote Link to comment Share on other sites More sharing options...
purdycat Posted January 17, 2010 Share Posted January 17, 2010 Hi Yes thats how I did mine "difflock engaged & transmission brake" with impact gun Hope that helps. Quote Link to comment Share on other sites More sharing options...
mmgemini Posted January 17, 2010 Share Posted January 17, 2010 The bolts should be on the flange !! I use a tyre lever across two bolts and held by the ground. There is a proper tool to hold the flange. A lenght of bar with two holes fot two prop bolts to fit into. Quote Link to comment Share on other sites More sharing options...
MOJO90 Posted January 17, 2010 Author Share Posted January 17, 2010 Thanks for all the advice. Just one other question - if I use the diff lock and brake is there a risk of breaking a gear tooth as I don't have access to an impact wrench? Thanks Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 17, 2010 Share Posted January 17, 2010 No. The engine produces 200 lb-ft * 3.6 * 3.32 = 2400 lb-ft. If you can replicate that with a socket, you would probably lift the truck. It is all good. They are on tight, but a normal 1/2" drive bar should work. Best to use a new nyloc hut as they sometimes work loose. Quote Link to comment Share on other sites More sharing options...
MOJO90 Posted January 17, 2010 Author Share Posted January 17, 2010 Thanks Red 90 Quote Link to comment Share on other sites More sharing options...
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