LT77S mainshaft wear how much is ok? - Defender Source
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  #1  
Old April 13th, 2014, 10:23 PM
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Ryan Phelps
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LT77S mainshaft wear how much is ok?

I removed and inspected my input gear and mainshaft splines each are missing about 25% of the original splines. I have read on various uk forums that the guys have worn them down to almost nothing and still driving it. I plan to do a fair amount of traveling this summer and if I can limp it along to this winter I will otherwise Ill probably just order all the pieces from ashcroft and rebuild it now. I have pretty much already decided the right thing to do is rebuild it now but I dont want to end up spending all summer doing repairs again this year (last year was a new chassis and full suspension rebuild as well as a few other things). Ill also end up doing the lt230 at the same time.
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Old April 14th, 2014, 12:13 AM
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It won't sheer at that level. I would run it with a cross drilled input until the trans died.
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Old April 14th, 2014, 08:29 AM
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John B.
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Sounds fine. Add the oiling disc for the time being.

What suffix box is behind the 200TDI?
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Old April 14th, 2014, 08:31 AM
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H. I plan to just tear it down and do a rebuild.
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Old April 14th, 2014, 09:27 AM
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There is no need really. Install an oiling disc or a cross drilled input gear and it will last forever. Unless there is some other problem, there is not reason to rebuild it.
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