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Case Tractors Discussion Forum
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SC PTO Noise

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Casekernel

11-22-2005 10:50:25




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I'm not presently using the PTO or the hydraulics, but need to address the noise sooner or later. Searched the arhives and did not find much. I have a repair manual and since tractor is a 49 with hydraulic pump, must fit the description of non-continuous PTO.

Problem: When I engage the PTO, it engages, but gives this dry sounding, grating noise, like a bearing with no grease. What's the procedure for investigation? What might be the likely cause of such a noise? Could it be a bearing going bad? I assume there are at least two bearings as possible culprits.

The transmission grease was low when I drained it (had about 5 gallons) and I just flushed with Kerosene and filled with new grease (10 gallons). Should I just run the PTO a bit to see if the noise abates? -- may not have lubrication. I have no idea if the problem predates my buying of the tractor since I have not used PTO and Hydraulics to date.

Comments please.

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Larry Martin

11-22-2005 12:24:49




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 Re: SC PTO Noise in reply to Casekernel, 11-22-2005 10:50:25  
You might change the hydraulic unit oil. This provides lubrication to thr rear bearing of the PTO and the chain drive of the hydraulic pump. Sounds like either the bearing is out or the chain is wore.



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Case kernel

11-22-2005 12:38:49




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 Re: SC PTO Noise in reply to Larry Martin, 11-22-2005 12:24:49  
I just changed the oil, but may not have enough in it. What is the capacity of the unit? I think I posted that the PTO was non-continuous--on second look at manual, it is the continuous--type.



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Camboted

11-22-2005 14:24:35




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 Re: SC PTO Noise in reply to Case kernel, 11-22-2005 12:38:49  
Are you sure you have the continuos type? The control lever is on the seat support not in the transmission housing. You should also have Eagle hitch. If so, the hygraulic pump runs continuosly, the only thing that activates when you engage the PTO is the clutch assembly. Does it slip? Your problem must be in the clutch or final bearing. It sounds more like a problem you might have with the non-continuous type. LOL!

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Casekernel

11-22-2005 17:45:55




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 Re: SC PTO Noise in reply to Camboted, 11-22-2005 14:24:35  
If "continuous type" means live hydraulics and Eagle hitch, I don't have that. Have we narrowed it down to "non-continuous type"? The control lever pivots out of the casting on the right side. So mine must not have a clutch involved. Sounds a lot simpler to work on. Which bearing are you referring to? There's a bearing pictured at the portruding end of splined shaft and one before the pump drive sprocket as I view the picture. Is there also a bearing at the clutch end of the shaft that could be implicated? Are these rear bearing lubricated with hyraulic oil and the front one with transmission grease?

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Camboted

11-22-2005 20:36:48




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 Re: SC PTO Noise in reply to Casekernel, 11-22-2005 17:45:55  
I am more familiar with the DC but you definitely have the standard pto. You have two bearings involved and will have to pull the transmission cover off to tell where the problem is. The front bearing is high at the front of the transmission case and supports the main drive gear that engages with gear behind the drive pinion when put in gear. This bearing requires splash from the transmission to lubricate and is most likely the one causing trouble. The rear bearing is between the transmission case and the hydraulic reservoir. You should get an IT manual off of ebay or this site has them for sale as well.

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Case kernel

11-23-2005 08:12:05




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 Re: SC PTO Noise in reply to Camboted, 11-22-2005 20:36:48  
Well, I may have over-reacted. I had drained both systems to put in new transmission grease and drained and put new fluid in the hydraulic resevoir and had not been using either the PTO or Hydraulics. I think all that was wrong was a lack of lubrication. I let it run a bit and the noise has stopped. May be I don't have a problem, but I'm prepared for the future, if I do.
Hope that lack of lubing was the problem. Don't have any equipment for that tractor to try either of the mechanisms under load. Anyway, thanks for all the info--I'm now a more informed man. The Jen Sales manual, by itself, is not that clear--that's why I consult this site. Can't even find any info in the books on capacity for the hydrualic resevoir. One guy that posted guessed it to be ll quarts--that's about what I added.

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Case kernel

11-23-2005 08:10:12




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 Re: SC PTO Noise in reply to Camboted, 11-22-2005 20:36:48  
Well, I may have over-reacted. I had drained both systems to put in new transmission grease and drained and put new fluid in the hydraulic resevoir and had not been using either the PTO or Hydraulics. I think all that was wrong was a lack of lubrication. I let it run a bit and the noise has stopped. May be I don't have a problem, but I'm prepared for the future, if I do.
Hope that lack of lubing was the problem. Don't have any equipment for that tractor to try either of the mechanisms under load. Anyway, thanks for all the info--I'm now a more informed man. The Jen Sales manual, by itself, is not that clear--that's why I consult this site. Can't even find any info in the books on capacity for the hydrualic resevoir. One guy that posted guessed it to be ll quarts--that's about what I added.

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