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Ford Tractors Discussion Forum
Show Parts for Model:

641-Interesting pump-prime remedy

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jeff pk

04-03-2014 11:33:57
50.39.134.80



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My hydraulic pump was leaking oil from the gear/engine-drive connection, so I decided to remove the pump. PO failed to install any gasket there at all so it was an easy fix, but the prime was lost in the pump when it was reinstalled and on reading the archives I tried to fiddle with the pipe-plug on top and blow air into the dipstick hole---both of which only got the pump to judder the lift slowly up. The real fix came by jacking up the rear end high---so that it was above the front, and running it for awhile while I raised and lowered the lift---after about 10 minutes it was smooth as silk. Question: what's happening inside that's priming the pump?

Just curious...

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Hobo,NC

04-04-2014 19:44:07
69.40.61.199



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 Re: 641-Interesting pump-prime remedy in reply to jeff pk, 04-03-2014 11:33:57  
Nutter head different thought "THUMBS UP"



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mhb@ufe

04-03-2014 16:29:03
74.75.194.4



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 Re: 641-Interesting pump-prime remedy in reply to jeff pk, 04-03-2014 11:33:57  
As sunbeam said, driving the front end inti a dish is a common method. If you think about the oil level along a straight line toward the front of the tractor and that is how high the oil is in the suction tube. When you raise the back of the tractor the oil level raises at the front there for raising the oil level in the suction tube.

Mark



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Larry NCKS

04-03-2014 18:03:33
70.195.4.210



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 Re: 641-Interesting pump-prime remedy in reply to mhb@ufe, 04-03-2014 16:29:03  
Hmm!!! Drive the front end inti a dish? Won't that break the dish??? :lol: :roll:
Sorry! Couldn't resist!



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mhb@ufe

04-03-2014 18:38:29
74.75.194.4



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 Re: 641-Interesting pump-prime remedy in reply to Larry NCKS, 04-03-2014 18:03:33  
You have to use a Tupperware dish :-)

Mark



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Larry NCKS

04-04-2014 03:28:48
70.195.3.146



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 Re: 641-Interesting pump-prime remedy in reply to mhb@ufe, 04-03-2014 18:38:29  
:lol:



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mhb@ufe

04-04-2014 17:22:19
74.75.194.4



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 Re: 641-Interesting pump-prime remedy in reply to Larry NCKS, 04-04-2014 03:28:48  
must have been thinking about food instead of tractors. Hope I didn't put my food in the ditch.

Mark



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Dean

04-03-2014 12:01:47
152.216.3.5



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 Re: 641-Interesting pump-prime remedy in reply to jeff pk, 04-03-2014 11:33:57  
Be advised that the shim gaskets between the hydraulic pump and the engine block are used to set drive gear backlash. Add/remove as necessary.

Dean



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jeff pk

04-03-2014 12:34:22
50.39.134.80



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 Re: 641-Interesting pump-prime remedy in reply to Dean, 04-03-2014 12:01:47  
I remember reading that. Should it ever be entirely free of a gasket?



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Dean

04-03-2014 13:05:59
152.216.3.5



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 Re: 641-Interesting pump-prime remedy in reply to jeff pk, 04-03-2014 12:34:22  
I cannot imagine why. It will leak without.

Dean



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sunbeam

04-03-2014 11:43:38
70.195.4.41



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 Re: 641-Interesting pump-prime remedy in reply to jeff pk, 04-03-2014 11:33:57  
works almost every time I drive the front end into the road ditch and leave the back wheels on the road.



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