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Case Tractors Discussion Forum
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DC clutch throw out bearing lube passage in crank

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Ron

01-29-2004 18:54:52




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I think the DC clutch throw-out bearing and pilot bearing is suppose to get lube oil through a drilled passage in the rear end of the crankshaft. However,the parts books and service manuals indicate the hole in the crankshaft is to have a plug. Does any one know the reason for the plug that seemingly would block the oil flow to the throw-out bearing and pilot bearing?




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bill

01-29-2004 19:27:27




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 Re: DC clutch throw out bearing lube passage in cr in reply to Ron, 01-29-2004 18:54:52  

the plug dosent fit that tight enough oil will stll pass I have seen a crank or two with small hole in crank main journal to keep too much oil from flowing The flywheel pickes the oil up and if you look there is atrough of sorts on the block in rear (above pan) and hole for oil to drain back into pan I have recently killed a DC for parts that had lots of sludge in clutch I called former owner and casualy talked about tractor mentioning drainning clutch cavity when changing oil He replied "Well my DC didnt have a place or reason to drain oil out of clutch when changing oil" I bet he still has unopened and unread owners manuel also

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Ron

01-30-2004 04:14:44




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 Re: Re: DC clutch throw out bearing lube passage i in reply to bill, 01-29-2004 19:27:27  
Thanks Bill. My DC clutch throw-out bearing was badly worn and the pilot ball bearing looked oil-starved. That caused me to study the lube system and the plug in the lube passage. The plug was a slip fit but the clearance seemed too small to allow more that just a drip now and then at best. I ground about a .020 flat on one side of the plug to allow more flow. Hope that cures my problem!

I concluded the lip seal in the clutch pilot ball bearing needs to be in good enough condition to prevent the lube oil from escaping thru the pilot bearing.

I saw the trough that returns the oil to the crankcase. Maybe if the DC owner would have read his owners manual the tractor would not have been read to be killed.

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bill

01-30-2004 08:15:55




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 Re: Re: Re: DC clutch throw out bearing lube passa in reply to Ron, 01-30-2004 04:14:44  

your right Ron if he had read manuel The bigreason was watwr getting in the oil and tractor over heating Problen was tractor had sat for years after beingused only 3 years (1952 -1955) the o rings had deteratied fromno water for 10 years If they had pulled sleeves on a bsicly unused tractor it would still be running Are you rebuilding your DC??? if so consider replacing the O rings on bottom of sleeve I sell for $29.00 per set of 4 (includes shipping)

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Ron

02-01-2004 15:57:04




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 Re: Re: Re: Re: DC clutch throw out bearing lube p in reply to bill, 01-30-2004 08:15:55  
I am rebuilding a 49 DC that has been in the family for about 40 years. Because it is critical that the water not leak into the oil and the lower sleeve seal is hard to get to,I would not ever consider not replacing those seals. The seal cost $10 each thru Case IH.



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bill

02-01-2004 16:33:47




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 Re: Re: Re: Re: Re: DC clutch throw out bearing lu in reply to Ron, 02-01-2004 15:57:04  

I wondered what case was getting for the o-rings now If you need any let me know 406 827 2039



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