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Case Tractors Discussion Forum
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Case 580 CK Rear Main seal leak

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eric Schwelling

02-12-2008 14:33:01




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This message is a reply to an archived post by Jim B on June 25, 2007 at 20:59:18.
The original subject was "Re: Case 580 CK Rear Main seal leak".

Hi, I also would like to replace the rear seal on a replacement used motor before I install it- do I need special tools, ansd do I need to remove the oil pan? (Motor is strapped to a skid currently) Thanks! [email protected]




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Jim B

02-12-2008 20:23:53




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 Re: Case 580 CK Rear Main seal leak in reply to eric Schwelling, 02-12-2008 14:33:01  
Hi Eric,
No special tools required. The seal is a full-circle design, like most modern engines. It mounts in an aluminum "seal-carrier", machined casting. This part (with seal installed) must be removed to pull the crankshaft, but the old seal can simply be pulled out from the rear, clean the area and push-in the new seal. The seal-carrier has a gasket under it and it provides the gasket surface for the oil pan across the rear of the engine.

Although the rear main seal installation is easy with the engine on a pallet... an inspection of the bottom-end bearings, oil pump & pickup screen, plus cleaning inside the oil pan is also easy. Suggest you take the time to better determine what condition your used engine actually is.

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eric Schwelling

02-13-2008 13:15:34




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 Re: Case 580 CK Rear Main seal leak in reply to Jim B, 02-12-2008 20:23:53  
Thanks! I ended up removing the cast retainer, pressed in the new seal, replaced the gasket, greased the new seal, and put it back together, super easy! Lastly before I put the motor in I'll remove the oil pan and clean it, replace gaskets, etc.



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