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Implement Alley Discussion Forum

john deere 640 rake

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06-16-2011 19:28:58

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I am having a problem getting the pto shaft at the gearbox of my john deere 640 rake. is there a secret to this. i need to replace the universal joint and cant seem to figure it out.

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06-17-2011 01:11:14

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 Re: john deere 640 rake in reply to jhcaldwelljr, 06-16-2011 19:28:58  
I always just take a large punch and a two pound hammer and hit the yoke on the side in the direction that will thread it off. Usually they will come loose with just a few hard hits. If it is still stubborn. Take a large hammer and hold it under one side of the yoke and hit the opposite side with another hammer. The jar will loosen them up too.

I have never had to take the gear case apart to get a shaft off.

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06-16-2011 19:51:50

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 Re: john deere 640 rake in reply to jhcaldwelljr, 06-16-2011 19:28:58  
Yes the pto is threaded onto the shaft coming out of the gearbox. There is no way to hold the shaft when loosening it. We had to unbolt gearbox slide apart then we could use a pipe wrench to hold shaft. Becareful not to damage splines on gearbox shaft. You might try heating it first.

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