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John Deere Tractors Discussion Forum

1943 John Deere B oil leak

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steve

05-19-2004 18:28:08

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When I tore clutch apart to fix it, I cleaned the drainback hole and oil slinger. Reassembled clutch and oil apppears to be leaking worse than before. Oil leaking outside of clutch cover when running. Is there a felt seal or cork gasket that needs to be replaced? Any help would be greatly appreciated.

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Clooney

05-19-2004 18:54:54

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Re: 1943 John Deere B oil leak in reply to steve, 05-19-2004 18:28:08

Steve, you say..

Quote: "Oil leaking outside of clutch cover when running">>>

Are you saying oil is leaking out of the pulley FROM the pulley cover or is the oil leaking from behind the pulley & running out to the cover? It makes a big difference on what the problem is..

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steve

05-20-2004 05:20:26

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Re: Re: 1943 John Deere B oil leak in reply to Clooney , 05-19-2004 18:54:54

The oil is actually leaking from inside the clutch and is coming out on the inside of the cover.

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Clooney

05-20-2004 07:06:06

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Re: Re: Re: 1943 John Deere B oil leak in reply to steve, 05-20-2004 05:20:26

Steve, that is usually caused by either the pulley bearing conical washer being installed incorrectly [or wrong side out], or it got hammered flat by someone because they though it should be flat, or that conical washer was installed without sealer on it's outer edge.. That conical washer is actually an oil seal that traps oil & returns it through the pulley drain holes to the reduction gear area..

~Another possible cause could be plugged drain back holes in the pulley hub but you said you cleaned those out [any chance too much grease was used in the bearing & it is now plugging the drain back holes?]..

~Things that can add to or aggravate the oil leakage problem are:

*Loose inner pulley hub bushing [allows too much oil through]..

*Oil pressure that�s too high..

*R/H main bearing that�s too loose allowing too much oil to flood the pulley to crankshaft area..

*Engine oil that�s too thin [or diluted with gasoline]..

*Excess combustion blow-by..

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