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Farmall & IHC Tractors Discussion Forum
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gene b/A PTO

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CNKS

06-07-2004 15:11:24




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Or anyone else who has the answer: I need to replace the bearing on the pto drive shaft on my Super A (#15 page 268 in the Super A parts manual). The bearing cage and the two housings are apparantly held in place by three bolts, the heads of which are on the INSIDE of the belt pulley housing. Do I remove these bolts by removing the 2.5 or so inch plug on the end opposite the belt pulley, or is there some other way? If not how do I get the plug out without garfing it up? I don't see any way to replace the bearing without separating the pto and pulley housings. Unless I can remove the gear immediately in front of the bearing, but I don't have a puller that will come anywhere near close because of the length of the shaft -- Thanks in advance.

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gene b

06-07-2004 18:58:41




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 Re: gene b/A PTO in reply to CNKS, 06-07-2004 15:11:24  
With all the bolts removed and on the bench the two should seperate. There could or could not be shims between the two castings that set the clearence for the beltpulley gears. You could get pto without beltpuley. I havent had a SA assy but to replace the belt pulley bearing you would have to remove the plug you mentioned as the shaft would not come out without removing the plug. I probably should shut up as that is one area i have not replaced a bearing but looking at the assy that would be the only way to remove the shaft. good luck gene b

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CNKS

06-07-2004 19:06:29




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 Re: Re: gene b/A PTO in reply to gene b, 06-07-2004 18:58:41  
Thanks -- I think you are correct. Not sure the bearing is ruined but is loose. Tractor has a belly mower, have had it maybe 5 years, but was probably used for many years with the mower, thus the bearing problem. Outer pto bearing although it justs sits there with no load, was shot.



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lee

06-07-2004 16:26:43




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 Re: gene b/A PTO in reply to CNKS, 06-07-2004 15:11:24  
4 bolts on the belt pulley house go all the way thru to the diff case. Remove these. Three bolts below on PTO house need to be removed also. Pull both housings and you will have in your hands what you need. Further disassembly required. You can't get there thru the plug.



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CNKS

06-07-2004 18:31:54




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 Re: Re: gene b/A PTO in reply to lee, 06-07-2004 16:26:43  
All the visible bolts are out. The whole thing is laying on the bench. I am afraid to apply too much pressure to separate the halves because it looks to me like the internal pto shaft gear that drives the gear for the belt pulley shaft will prevent the halves from coming apart. The "further disassembly" is what I'm asking about.



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lee

06-07-2004 19:17:36




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 Re: Re: Re: gene b/A PTO in reply to CNKS, 06-07-2004 18:31:54  
I think those two housings now separate. Those bolts internal appear to secure a bearing retainer to the intermediate housing. The outer diameter of that retainer centrals the belt pulley house to the intermediate housing. This is what I see in the drawing sections available to me. They just say "dis-assembly is evident from the drawings". Drive a knife edge between the two housings, one side, then the other.

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CNKS

06-08-2004 08:50:56




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 Re: Re: Re: Re: gene b/A PTO in reply to lee, 06-07-2004 19:17:36  
It appears to me that the gear inside the belt pulley housing will not come out without removing the bearing retainer, the bolts of which are also inside the housing, but I am going to try it -- Thanks.



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lee

06-08-2004 11:07:37




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 Re: Re: Re: Re: Re: gene b/A PTO in reply to CNKS, 06-08-2004 08:50:56  
the drive bevel gear stays on the shaft and stays with the intermediate housing when you separate the two housings. Then you can remove the gear and the bearing retainer bolts. Let us know how it goes.



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CNKS

06-08-2004 14:58:16




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 Re: Re: Re: Re: Re: Re: gene b/A PTO in reply to lee, 06-08-2004 11:07:37  
You and gene b are correct -- I finally got it apart. Reason it was tight was simple. The large seal or O-ring that keeps the oil from leaking between the two housings made them hard to get apart. I was being careful because I did not want to damage the 3 shims between the housings that are used to set the gear backlash. Still cut one of them, but I think it is ok. Now I have to get a better bearing puller because the one I have won't grab the beveled gear. Thanks very much for your help.

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lee

06-08-2004 15:08:04




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 Re: Re: Re: Re: Re: Re: Re: gene b/A PTO in reply to CNKS, 06-08-2004 14:58:16  
good job cnks. I figured you would get there.



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CNKS

06-07-2004 15:13:44




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 Re: gene b/A PTO in reply to CNKS, 06-07-2004 15:11:24  
To clarify, I mean the top shaft, the one engaged by the transmission shaft, not the bottom shaft that the implements attach to -- that one is simple.



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