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NAA PTO repair

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Curtis

06-26-1999 17:56:54




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Getting ready to make repairs on a leaky PTO seal on a '54 NAA Ford. Just curious if anyone out there has any advice or insights to the process before I begin. This is the first time I have tackled this task. I have a shop manual but is it enough? Thanks for your comments.




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ZANE

06-26-1999 18:53:33




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 Re: NAA PTO repair in reply to Curtis, 06-26-1999 17:56:54  
Drian the oil from the lift and the differential into two different containers so that you can put it back where it came from.
Remove the 4 retaining bolts from the pto housing.Be sure that the pto is in the engauged position.
Pull the pto assembly out the back of the tracotr.
Remove the bearing retaining snapring from the back of the housing.
Grasp the pto about half way up the shaft and drop the rear splined end briskly onto a big hard block of wood laying on a concrete floor.A couple of licks should cause the housing to fall off.
Replace the seal and reinstall the housing onto the bearing and replace the snapring.
You should check the bearing for any loose motion that might cause premature failure of the seal and loose motion in the bearing can also cause the pto to jump out of gear while doing heave pto work.

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Dan (NAA 90002)

06-26-1999 21:34:40




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 Re: Re: NAA PTO repair in reply to ZANE, 06-26-1999 18:53:33  
There is a metal sleeve on the shaft that the seal rides on. You should probably replace this because they become scored and this is probably what caused the seal to fail. You need to cut the old one off carefully with a die grinder or chisel. The new one needs to be heated up with a torch and then dropped on the shaft. You only get one chance, if you don't get it hot enough it stops half way and you have to press it on. I replaced the bearing, sleeve, and seal on mine and it hasn't leaked since.

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Dan (NAA 90002)

06-26-1999 21:34:33




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 Re: Re: NAA PTO repair in reply to ZANE, 06-26-1999 18:53:33  
There is a metal sleeve on the shaft that the seal rides on. You should probably replace this because they become scored and this is probably what caused the seal to fail. You need to cut the old one off carefully with a die grinder or chisel. The new one needs to be heated up with a torch and then dropped on the shaft. You only get one chance, if you don't get it hot enough it stops half way and you have to press it on. I replaced the bearing, sleeve, and seal on mine and it hasn't leaked since.

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