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

3 point hydraulic pump

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Duke23

09-15-2020 18:02:26




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3 point hitch not working on my 8n I just bought. Found 3" of water in the bottom of the tranny. Here are some pics. I'm gonna order a rebuild kit for it. I need to know if I should order the valve Chamber assemblies too. Don't know if the tried to use it this past winter and it was frozen. Does the center part of the Chambers rotate. Never worked on a pump like this before. Thanks




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tracy brown

09-16-2020 17:37:54




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 Re: 3 point hydraulic pump in reply to Duke23, 09-15-2020 18:02:26  
A perfect pump will not lift with 3" of water. I would try new clean oil first.



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520 pipefabricator

09-16-2020 09:14:13




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 Re: 3 point hydraulic pump in reply to Duke23, 09-15-2020 18:02:26  
If the pump base would be bad, don't assume the chambers are bad and pitch them. Those things aren't cheap



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520 Pipefabricator

09-16-2020 09:09:34




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 Re: 3 point hydraulic pump in reply to Duke23, 09-15-2020 18:02:26  
It would depend where the pump base is cracked, if its cracked. I actually welded the top span on my pump when I assembled it wrong (there is an offset on the centerline of the pistons; not too obvious without looking at them. Be sure the brass blocks are rubbing eachother when reassembling the pump, otherwise you're tempting trouble). Since there was water in it, it may not be a bad idea to remove it and take it to be checked for cracks at a machine shop

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520 Pipefabricator

09-16-2020 09:11:26




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 Re: 3 point hydraulic pump in reply to 520 Pipefabricator, 09-16-2020 09:09:34  
if the water was in the valve chambers it may not be a bad idea to take them to be checked too



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jimtrs

09-16-2020 08:40:50




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 Re: 3 point hydraulic pump in reply to Duke23, 09-15-2020 18:02:26  
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As Tim said, hold off. A pump rebuild should be at the bottom of the list of things to do for a non working lift system. If there was really 3 inches of water in the sump, and it froze, chances are you'll need a replacement pump, not a rebuild kit. Most of the problems with these lift system is in the lift cover and/or adjustments. Far and few between are pump problems.

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Tim PloughNman Daley

09-16-2020 05:47:36




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 Re: 3 point hydraulic pump in reply to Duke23, 09-15-2020 18:02:26  
I highly suggest you hold off on buying any new parts until you know for sure what all you will need. Dropping the pump to rebuild is big job, not that difficult, just very time consuming. Get a buddy to help. If the water froze and pump was activated, chances are great that you cracked the pump base and is now junk. You will need a new piston, cylinder, and gasket kit but as far as other parts like the chambers go -need to be evaluated. Most times a simple cleaning and rebuilding is all that is needed. I wrote an article on 8N Hydraulic Repair but it is on the 'other' Ford N-Tractor web site and they won't even let me post a link here so email me.

Tim Daley(MI)

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lha

09-15-2020 19:19:46




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 Re: 3 point hydraulic pump in reply to Duke23, 09-15-2020 18:02:26  
The PTO shaft runs through a double cam which pushes two pistons side to side,pumping through the four pump chambers. You'll probably need at least the cam blocks[2],pistons[2],a PTO bushing and two sets of chamber valves. I have the cam blocks,pistons and a PTO shaft bushing,NOS Ford parts that I got when I got a lot of pump parts and used the rest to fix mine with.If interested,email me.



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