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Case Tractors Discussion Forum
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VAC Project: Which way does the PTO bearing go ?

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F-I-T

09-10-2003 16:46:35




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I'm installing new bearings in the PTO housing (two tapered, one roller) of my '50 VAC. My question comes on the installation of the upper roller bearing (ND 8604). The old one was shot, and the side shield was in the bottom of the case, so I cannot tell the original installed position. It has a seal or shield on one side and is open on the other. It came packed with the nice black bearing grease that is generally used. My question is: Which way should this bearing face? If I install the shield facing the transmission, then it will never see gear lube, as it sits in a pocket, and that packed grease will have to last a long time. If I face the open side toward the transmission and oil only gets there occasionally, it may run dry, since it looks difficult for thick gear lube to make its way up that high. If I look VERY closely at the illustration on page 33 of the "Dealers and Service manual for the VA series, it appears to show the shield facing the transmission so that the bearing will rely on its packed grease only.

I think it stays packed with the shield facing the transmission, but I'd sure feel better with some other thoughts.

Frank-in-Tallahassee
70D // 855 // VAC

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Joe (Wa)

09-11-2003 14:26:20




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 Re: VAC Project: Which way does the PTO bearing g in reply to F-I-T, 09-10-2003 16:46:35  
Hi F-I-T, the open side on the drive shaft roller bearing faces aft, that is, toward the snap ring. You could change to a sealed bearing as opposed to the shielded or semi-open type. Joe



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F-I-T

09-11-2003 19:15:53




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 Re: Re: VAC Project: Which way does the PTO beari in reply to Joe (Wa), 09-11-2003 14:26:20  
Thanks Joe. Yeah, that's the way I thought it would be. I have this bearing already, so I'm going to use for now. If it ever wears out (I don't imagine doing all that much PTO work, though) I'll go to a complete grease sealed bearing.

Frank



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