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Ford 9N, 2N & 8N Discussion Forum
:

PTO jumping out of gear

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old 9

05-08-2005 07:42:36




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Got my new to me Ford flail mower going. This is the first time I have used the pto on my NAA . It ran the mower great the first 3(short) trials .Yesterday the pto kept jumping out of gear. What do I look for? Thanks Joe




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Kevin in OK

05-08-2005 18:49:05




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 Re: PTO jumping out of gear in reply to old 9, 05-08-2005 07:42:36  
When my grandpa had a problem like this on his 631, it turned out to be the pto shaft was twisted, and the shifter rode off the shaft like a nut on a bolt. It was fixed for several years by holding it engaged with a bungee cord. Eventually the shaft got so beat up we had to replace it. Then again it could be one of the other problems mentioned here.

Kevin



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ZANE

05-08-2005 08:53:12




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 Re: PTO jumping out of gear in reply to old 9, 05-08-2005 07:42:36  
Usually the reason the PTO will not stay in gear is because of a loose PTO bearing. This can be caused by a badly worn bearing, a broken snap ring groove in the PTO bearing housing or the bearing retainer sleeve having moved from where it should be. Or the bearing snap ring can be dislodged.

Any movement front to back will cause it to jump out of gear.

The PTO coupling splines can also be worn and cause it to jump out of gear too, but not as often as the before mentioned things.

The detent is another thing to examine but it is less likely to be the problem.

Always be sure that the telescoping portion of the drive shaft is well lubricated or it can damage the PTO bearing etc.

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old

05-08-2005 07:58:27




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 Re: PTO jumping out of gear in reply to old 9, 05-08-2005 07:42:36  
My guess would be a problem with the pto shafter, easy to open up pull the plate with the shafter and take a look in there it may be a simple fix like a detent ball/spring or it could be a worn shafter



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