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Update on 8N hydraulics

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Brad Buchanan

07-08-2014 08:22:53

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Hey folks.

My 8N had a problem with the 3-point lift hydraulics.

If you had a load on them, mower or other heavy implement the minute you pushed in the clutch the lift arms would begin to drop.

Not a game ender but pretty easy to paint yourself into a corner with the brush hog.

I ordered the parts from this site and disassembled the lift cover and associated components and found the cylinder in reasonably good shape. I honed it with a brake hone and the finish came out good.

I installed the updated piston with the o-ring and assembled and adjusted per the instructions in the FO4 manual.

I hooked up the 5 foot brush hog and mowed for a bit and brought the tractor and mower into the shop and left the mower suspended.

Came back the next day and she was still in the same position! Small victory but it was my first try at tractor hydraulics.

Thanks to all who commented and helped.


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07-08-2014 16:18:51

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 Re: Update on 8N hydraulics in reply to Brad Buchanan, 07-08-2014 08:22:53  
Yep, i had about the same experience. Lift wouldnt stay up at all, replaced the piston with a new style and oring and the relief valve and it stays up for days now with weight on. I share ur feeling of victory.

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Jim in Eastern North Caro

07-08-2014 10:30:40

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 Re: Update on 8N hydraulics in reply to Brad Buchanan, 07-08-2014 08:22:53  
Did you accomplish all that from the top..., without taking the pump out from below?

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Brad Buchanan

07-08-2014 17:31:40

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 Re: Update on 8N hydraulics in reply to Jim in Eastern North Caro, 07-08-2014 10:30:40  
Hey Jim.

You service the cylinder and controls by removing the top cover. Be prepared, it weighs over a hundred pounds and needs to be removed carefully.

I used an engine crane to do mine.

The pump comes out from the bottom for service.

Good luck,


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