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Thompson or Cessna?

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charles todd

04-08-2008 09:40:05




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Thompson or Cessna, which one is the best... They are interchangable, i think. F504D currently have a 12gmp pump and possibly 4.5gpm ps pump. I think my pump is shot.

I have heard of swapping in the 17gpm, but loosing ps by 3.5gpm??

What I need to know is, just replace with what is already there? Or go 17gpm? What about the aux pump, there is a 4.5gpm and a 7.5gpm? Would a 17+4.5 be good for a loader? Or 12+7.5 for more power steering and 3 point? Or 17+7.5 for the most capacity offered, but will this suck HP?

The code is F504D S-X-Y and sn 3512. I know it is a 12. I do not want to tear it down unless I have a new pump ready to go on. Help, Thompson, Cessna, or cheapest one available...

Thanks

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TractormanNC

04-08-2008 12:28:55




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 Re: Thompson or Cessna? in reply to charles todd, 04-08-2008 09:40:05  
If I recall correctly, the "piggy back" pump is for the hitch only. In a 656 or 666, the hitch pump adds to the main pump when the hitch is not in use, I don't think it does that on a 504. If I am wrong, someone will correct me! You lose about 3.5 gpm off the top of the main pump for power steering. 8.5 or 13.5 left for the remotes. You decide. If Allan in NE catches wind of this he will say put in the BIG one.

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