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Clooney John T (720 power steering pump)

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Rooster in Tenn

12-30-2002 19:10:02




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Started on my 720 power steering pump today. It will not come with the radiator in. The John Deere shop manual said I would have to move the radiator. So now I going to pull the radiator. But I have a after market front end. The front is going to have be pulled. A lot of work just to pull the power steering pummp.




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ChuckW

12-31-2002 04:56:08




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 Re: Clooney John T (720 power steering pump) in reply to Rooster in Tenn, 12-30-2002 19:10:02  
pulling the radiator, eliminates the risk of the fan shaft nut slipping forward and poking a hole in it. I would remove the radiator and accessories. Also while I was into the pump repair, I'd rebuild the pedistal, because you may have a broken vane pin there. Those tractors are bad about that. The pump has a front seal and rear seal. It is a pressure type fit with no gaskets but you can use some varnish light sealer in putting back together. Use a liquid type, no silicone. Make it light, like smearing around with fingers. While you have the shaft off check all the coupling and shaft ends. This is a high wear area....just take your time and be cautious.....

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Clooney

12-30-2002 19:55:40




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 Re: Clooney John T (720 power steering pump) in reply to Rooster in Tenn, 12-30-2002 19:10:02  
Rooster, like said before, some will & some won't come out without moving the radiator.. With my luck they usually don't..There are bolts that come up through the bottom of the front frame that hold the radiator down. If you have to pull the front end it might be easier to just pull the governor.
~Be very careful working with that fan & pump around the radiator as it is easy to poke a hole in the core.
~On the pump, you will need two seals for the front & two seals + a spacer washer for the rear.

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Rooster in Tenn

12-30-2002 19:37:20




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 Re: Clooney John T (720 power steering pump) in reply to Rooster in Tenn, 12-30-2002 19:10:02  
John T did ya'll move the radiator. I believe about 2" will do the trick. Are two bolt under the frame? If they are I going have pull the front end.



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John T

12-31-2002 04:23:50




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 Re: Re: Clooney John T (720 power steering pump) in reply to Rooster in Tenn, 12-30-2002 19:37:20  
Rooster, Like I said, I dont recall having to move the radiator on either 720 we did?? Yes, the radiator bolts are up underneath all that wide front end stuff, and Im starting to think like clooney in that maybe its time to consider raising the governor versus moving that darn radiator. Just be sure and have things marked to get it back in time with the cam gear and I forget if it has that lower oil line that needs to be disconnected like the older tractors. Happy New year and Good Luck Ol John T

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Tad

12-31-2002 07:35:05




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 Re: Re: Re: Clooney John T (720 power steering pump) in reply to John T, 12-31-2002 04:23:50  
John T -
I am replacing a governor on a 720 after it has been off for a long time - what do you mean by "getting it back in time with the cam gear"? I don't see anything in the governor that needs to be timed with the cam gear.
Thanks, Tad in CT.



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John T

12-31-2002 10:51:22




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 Re: Re: Re: Re: Clooney John T (720 power steering pump) in reply to Tad, 12-31-2002 07:35:05  
I was thinking about the older tractors that Im used to working on where the mag or delco distributior ran out the end of the governor, but youre absolutely correct, that new fangled 720 lol doesnt. Thanks, Ol John T



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John T

12-30-2002 19:18:15




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 Re: Clooney John T (720 power steering pump) in reply to Rooster in Tenn, 12-30-2002 19:10:02  
Rooster, its been in the early spring when I did my 620, but then we did two of Ben and Henry's 720's and I could have sworn we did NOT have to remove the radiators, but my old memory cells arent what they used to be lol. I think a few weeks ago we covered this subject in that youre gonna probably have to use 2 shaft seals front and back and DONT pull the shaft out the front of the tube from its coupler. We installed new half moon keys also. Let us know if you really had to remove the radiator cuz I sure didnt think we had too. Ol John T Nordhoff

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