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Case Tractors Discussion Forum
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Case S Transmission/Differential

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Jeff Thornton

10-07-2005 09:05:12




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I have a 1952 Case S model tractor. The service manual tells me to put SAE 140 or 90 in every 250 hours and it take approximately 9 gallons. No where does it say anything about the pto oil, grease. Is the transmission and hydraulics and pto all run on this SAE 140 or 90 oil??? And is the filler hole for all--at the rear near the PTO. Thanks for all your help.




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John Saeli

10-07-2005 16:59:38




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 Re: Case S Transmission/Differential in reply to Jeff Thornton , 10-07-2005 09:05:12  
Hey Jeff: I prefer 85W140 for the Tranny-Diff. And Trannsmission-Hyd. Fluid for the PTO-Hyd. Housing. Yes, they are separate Housings. Both filler plugs are on the top of the PTO Housing. The Tranny-Diff. Plug is closest to the main housing & the Hyd. fill is on the Top toward the rear somewhat.



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Jeff Thornton

10-08-2005 04:17:08




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 Re: Case S Transmission/Differential in reply to John Saeli, 10-07-2005 16:59:38  
John, thank you for your information. To make it simple for me,,, I should use 85W140 for both the transmission and for the PTO. They are separate holes at the back on my tractor the transmission is the larger square headed bolt and the PTO is the smaller square headed bolt at the top and rear. Thanks



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John Saeli

10-08-2005 06:26:58




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 Re: Case S Transmission/Differential in reply to Jeff Thornton , 10-08-2005 04:17:08  
Hey Jeff: The 85w140 will be too stiff for the Hyd. system, and will probably make the PTO unit drag even more than it does with the thin oil. For my older Hyd. systems, I add some 85w140 to the thin oil, but never use it straight in there.



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