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Allis Chalmers Discussion Forum
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Crankshaft seals on Allis WD?

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Dale L. MN

09-09-2004 07:16:44




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Is there any other area that oil could be leaking from besides the crankshaft seals on a 1951 WD? The oil seeps from the front bottom of the bell housing and thru the inspection plate on the bell housing bottom. Also can a person pull the engine wihtout removing a torque tube? I thank you very much for your knowledge!




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Sid

09-09-2004 14:56:58




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 Re: Crankshaft seals on Allis WD? in reply to Dale L. MN, 09-09-2004 07:16:44  
The back end of the crank shaft has an oil wick that allows oil to seep to the pilot bushing.



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Butch(OH)

09-09-2004 13:30:37




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 Re: Crankshaft seals on Allis WD? in reply to Dale L. MN, 09-09-2004 07:16:44  
Besides the rear main seal there are two other places. The plug at the rear of cam bores (unlikely) and if the motor has ever been apart it is common for the small gaskets that go under the rear main cap to be missing, if so oil can go between the cap and block and appears to be a rear main seal leak, look carefuly. There is also troubles with the oil pans sealing at the ends which can appear to be a rear main leak. After removing the obvious things including the radiator you remove the engine out the front, splitting it from the clutch housing. To get room to move the engine forward you must take the bolt out the brace that goes from the hand crank shaft to the steering box input bearing retainer. Then slide the shaft towards the engine and drive the roll pin out at the front end of the spring. Then slide the hand crank forward as far as it will go, You then pull the motor up and forwards and it will come out with just a bit of jiggling.

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