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Case Tractors Discussion Forum
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DC oil level??

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Camboted

02-15-2005 17:16:47




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A question for some mechanical experts. Most DC's run about 15-25# of oil pressure, not that great. The oild level in the sump is well below the bottom of the pan under cylinder 1& 2, thus zero splash effect. As large as the oil sump is would it not help lubricate the cylinders to run the oil level up to say the bottom of the front inspection plate?? This would produce some splash, but would it produce excess pressures in the crankcase? The reason I ask is that we noticed, especially with the M&W pistons (they have a lower oil ring, near the bottom of the piston) a problem with cylinder scoring. It could just be due to abuse (low oil levels) but I was wondering if the higher oil level might help prevent this? What would it harm?

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dctom

02-16-2005 06:10:33




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 Re: DC oil level?? in reply to Camboted, 02-15-2005 17:16:47  
camboted; if you take shims out of rods and mains i bet the oil pressurel will improve, only other place would be the cam bearings that oil pressure can get away unless the pump is wore bad, the oil in the clutch is throwen back in to the pan by the fly wheel so there should never be too much in there DCtom



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Gary from Iowa

02-15-2005 18:41:12




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 Re: DC oil level?? in reply to Camboted, 02-15-2005 17:16:47  
Camboted - I certainly am no expert, but my concerns, without research, would be the clutch area. As you know, about one quart of crankcase oil is always present in the clutch housing. Oil is pumped from the rear main through a drilled hole in the clutch shaft which lubricates the clutch linkage and bearings. A oil relief hole in the PTO drive sleeve allows oil to escape into the clutch housing. My concern, like I stated without research, would be excess oil being allowed in the clutch housing without it having a way to escape. With to much oil in the clutch housing I am wondering if the oil seal, which prevents the transmision oil from entering the clutch housing and crankcase oil from entering the transmission be able to stand the extra pressure it was not design for, for a continuing period of time. Maybe I am mising something here, or have a misunderstanding of the system, but this is something I would consider.

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Wayne J

02-15-2005 18:03:36




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 Re: DC oil level?? in reply to Camboted, 02-15-2005 17:16:47  
Hay Camboted be careful you get oil up to the crankshaft you could get oil foaming Wayne J



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Camboted

02-15-2005 18:11:02




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 Re: DC oil level?? in reply to Wayne J, 02-15-2005 18:03:36  
Wayne, that's what I was wondering, with new oils is that a problem, and, would that be so bad?



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Wayne J

02-15-2005 18:43:20




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 Re: DC oil level?? in reply to Camboted, 02-15-2005 18:11:02  
Addatives keep oil from foaming under pressure but acrankshaft splashing would cause foam. air bubbles will cause oil pump and oil presure problems. Wayne J



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Camboted

02-15-2005 18:59:44




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 Re: DC oil level?? in reply to Wayne J, 02-15-2005 18:43:20  
Got it! Thanks!



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AllanC

02-16-2005 19:52:07




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 Re: DC oil level?? in reply to Camboted, 02-15-2005 18:59:44  
As they say, my $.02 worth. The lack of oil under the crank at the front shouldn't be relevant, there is supposed to be enough oil flying around from the rod bearings as the crank spins to lube everything. I don't know if these have a small hole as some do, in the top of the rod to squirt some oil into the piston, but if you were real concerned you could drill one. It has to be tiny 1/32 or less? Scoring may be aggravated by pistons with a lower ring, but working hard when cold, ( ok,it doesn't get cold there) or being run low on oil would be my top suspects.

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