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Bearing removal off PTO shaft

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Author

06-28-2004 05:23:31

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I do have a manual on order but doesn't help me now. I removed the PTO from my 9N tractor because the seal was bad. Know that I observe it more closely, I noticed the bearing is in very bad shape, seal breaking and alot of play in it. My question is in what direction does the bearing come off? Towards the collar side? I presume I have to heat it up, probably a nice n tight press fit huh? Please let me know! Thanks alot!

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Rob

06-28-2004 06:09:56

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Re: Bearing removal off PTO shaft in reply to Al, 06-28-2004 05:23:31

Step back and take a breath. If that shaft is the obsolete OEM 1 1/8" spline diameter you should consider putting in the 1 3/8" standard sized pto shaft. Drive shafts will be 6-spline, 1 3/8" standard and not the 1 1/8". Save messing with adaptors if you have a standard shaft. I don't know how much the bearing and seal will cost but for something like $110 you get a shaft and everything assembled including a bearing and seal that just pokes right back in that hole. 4-bolts and that's it!
Of course you want to turn the shaft a few revolutions to see that it turns ok. Not likely but if it binds up at all you can loosen the pump mounting bolts then turn the shaft a few times to center the pump on the new shaft.

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Barnstormer

06-28-2004 08:15:29

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Re: Re: Bearing removal off PTO shaft in reply to Rob, 06-28-2004 06:09:56

The 1 and 3/8 replacement is good for a work tractor. You must use the replacement screw on cover. For restorations, the original caps will not fit unless you use the 1 and 1/8 original size shaft. Your call, whatever makes you happy.

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Rob

06-28-2004 08:20:24

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Re: Re: Re: Bearing removal off PTO shaft in reply to Barnstormer, 06-28-2004 08:15:29

Right, right. The kit I got came with the screw-on cap.

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Bob - MI

06-28-2004 05:41:43

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Re: Bearing removal off PTO shaft in reply to Al, 06-28-2004 05:23:31

Bearing is a slip fit and is retained by the shrink fit sleeve that your seal rides on. The sleeve has to come off to remove the bearing.

To remove the sleeve I put the shaft in a vice and used a cutoff wheel to carve a groove down the sleeve. Once I had as much length as I could get without cuttimng into the shaft the hammer and chisel came out and allowed me to split the collar and it slid right off. If the bearing is stuck a puller or some other approach will do just fine but don't tear up the shaft. Assembly is the opposite and I would suggest cleaning up the shaft with a file to ensure nothing will hang up on re-assembly. Sleeve is a shrink fit and will require heating into the blue/dull red stage. It should then just drop right on. After the collar is seated against the bearing, cool it off with a wet rag. Keeps the bearing from sucking up the heat.

Good luck

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Ramon

06-28-2004 10:02:50

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Re: Re: Bearing removal off PTO shaft in reply to Bob - MI, 06-28-2004 05:41:43

Watch the direction you put the retainer sleeve back on. The tapered end should face out to allow the seal to slide on. You may also want to polish the retainer a bit with some emery paper after cooling it down.

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