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Allis Chalmers Discussion Forum

rear crankshaft seal leaking

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curt lawrence

02-06-2008 10:20:42

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hello everyone i have tried everything to stop the rear crank seal from leaking on my 1950 wd.i've tried the knew felt type of seal and rope seal and it still leaks any suggestion would be appriciated because i'm out of ideas.thanks

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02-06-2008 19:40:15

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 Re: rear crankshaft seal leaking in reply to curt lawrence, 02-06-2008 10:20:42  
If it is leaking where my Wd-45 is, i have tried several things to stop it, the reason it leaks is because the metal reatianer on top of the crank doesn't clamp down on the crank to seal it, it just kinda sits on top, if that is the problem, put two or three of the square type gaskets, put gasket sealer or sylicon sealer between the gaskets and where it seats to metal, it should take care of the issue, but i'm not possitive.
Good luck. Because it has really made me mad.

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eli fish

02-06-2008 11:32:12

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 Re: rear crankshaft seal leaking in reply to curt lawrence, 02-06-2008 10:20:42  
When seals still leak even after replacement it is usually caused by excess bearing clearance or crankcase pressure due to blowby. Check that your crankcase breather is free. Is it possible to get a thicker rope seal? I've heard that you can bunch them up a bit to make the fit tighter. Best of luck.

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