PTO bearing grease shield

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mva1958
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PTO bearing grease shield

Postby mva1958 » Sun May 27, 2018 11:22 am

I'm replacing my original PTO shaft because the splines are badly worn/rounded over; it is probably the original 1950 shaft - the bearing is staked.

I got a new shaft from Hamilton Bob, bearing and seal from various other reputable vendors. I got the replacement bearing on and the snap ring installed to hold it in place - so far, so good.

The problem is, I can't get the bearing grease shield to mate up solidly with the bearing so I can install the retaining ring. It wobbles on the raised part of the shaft and won't completely seat. Can anyone think of why this would be? The shield is not deformed or misshapen in any way that I can see.

I can't find a new grease shield from any parts supplier - is it necessary? Should I try to find a suitable sealed bearing to replace the one I bought or is there a simple step that I've overlooked? I suppose I could take some of the material off of the shaft where it tapers down from the snap ring groove, but I'm afraid of throwing off the balance.

Thanks,

Mike
If only Mrs. Hoyt and Mrs. Clagwell had gotten along...

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mva1958
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Re: PTO bearing grease shield

Postby mva1958 » Sun May 27, 2018 11:49 am

For clarification, the grease shield is #12 on this diagram:

PTO diagram.jpg
If only Mrs. Hoyt and Mrs. Clagwell had gotten along...

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rockfarmer
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Re: PTO bearing grease shield

Postby rockfarmer » Sun May 27, 2018 1:19 pm

Someone else will have to give you more detailed information, but after replacing 2 of them recently, there should be no play in the shield once the snap ring is in place.

Could it be the bearing is not seated on the shaft completely?

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mva1958
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Re: PTO bearing grease shield

Postby mva1958 » Sun May 27, 2018 2:05 pm

rockfarmer wrote:Someone else will have to give you more detailed information, but after replacing 2 of them recently, there should be no play in the shield once the snap ring is in place.

Could it be the bearing is not seated on the shaft completely?


I can't get the shield's retaining ring installed because the shield is being held off the bearing by the tapered portion of the shaft. The bearing's snap ring is in place and is holding the bearing snugly in place, I don't think it's a bearing problem.
If only Mrs. Hoyt and Mrs. Clagwell had gotten along...

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rockfarmer
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Re: PTO bearing grease shield

Postby rockfarmer » Sun May 27, 2018 2:19 pm

Sounds like the shield's ID is too small. Here is one I pulled off a project tractor. The shield definitely goes past the taper.
PTO bearing shield.jpg

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Re: PTO bearing grease shield

Postby JohnMihevic » Sun May 27, 2018 2:29 pm

I just replaced the PTO shaft on my 1948 Cub with a new one that has the snap ring and the bearing is not staked to the shaft. My PTO bearing did not have a grease shield. I purchased one from CNH. The part No. is 351272R2. It fits perfect.

John M.

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mva1958
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Re: PTO bearing grease shield

Postby mva1958 » Sun May 27, 2018 2:41 pm

rockfarmer wrote:Sounds like the shield's ID is too small. Here is one I pulled off a project tractor. The shield definitely goes past the taper. PTO bearing shield.jpg


My shield's ID is smaller than the one shown in your photo - it's the original that mated perfectly to the staked bearing (i.e. no snap ring groove).
If only Mrs. Hoyt and Mrs. Clagwell had gotten along...

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mva1958
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Re: PTO bearing grease shield

Postby mva1958 » Sun May 27, 2018 2:43 pm

JohnMihevic wrote:I just replaced the PTO shaft on my 1948 Cub with a new one that has the snap ring and the bearing is not staked to the shaft. My PTO bearing did not have a grease shield. I purchased one from CNH. The part No. is 351272R2. It fits perfect.

John M.


Thanks, John. I found that part no in the parts manual but couldn't find anyone who stocks it. Messick's has one but the picture they have is radically different from what I have or what Rockfarmer posted. I'll follow up with CNH, there's a dealer about 40 miles from me.
If only Mrs. Hoyt and Mrs. Clagwell had gotten along...

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Re: PTO bearing grease shield

Postby Dale Finch » Sun May 27, 2018 5:43 pm

I replaced 2 staked shafts on PTOs and had the same problem. I simply filed the shield hole until it dropped down over that shoulder. Worked fine...and the price was right!! :D

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Re: PTO bearing grease shield

Postby Don McCombs » Sun May 27, 2018 7:54 pm

Dale Finch wrote:I replaced 2 staked shafts on PTOs and had the same problem. I simply filed the shield hole until it dropped down over that shoulder. Worked fine...and the price was right!! :D

Was that post sent from the bottom of the ocean? :D
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Dale Finch
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Re: PTO bearing grease shield

Postby Dale Finch » Sun May 27, 2018 10:22 pm

Almost! Between dives, and waiting for lunch. We are 12 hours ahead here in Dumaguete, Philippines! Hotter than Hades outside, so sitting in my air conditioned room checking up on you guys!! :lol:

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Re: PTO bearing grease shield

Postby rockfarmer » Sun May 27, 2018 11:48 pm

Don't drink the water!!!!!

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mva1958
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Re: PTO bearing grease shield

Postby mva1958 » Mon May 28, 2018 12:54 pm

Dale Finch wrote:I replaced 2 staked shafts on PTOs and had the same problem. I simply filed the shield hole until it dropped down over that shoulder. Worked fine...and the price was right!! :D


Good idea - I enlarged the ID with a dremel wheel, now I'm good to go.

Thanks everyone - I'm gratified at how quickly the membership jumps in to help.
If only Mrs. Hoyt and Mrs. Clagwell had gotten along...


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