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8N hyd pump reinstall

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Jake

03-12-2003 06:23:19




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Is it possible to reinstall the hydraulic pump & pan beneath an 8N _without_ removing the top cover and how? I'm having trouble getting the whole thing to go in smoothly - always seems to get "caught" on something. Yes, the PTO shaft is out and I'm using a jack to help push the pump up into the belly but it still wont go in easily.

Also, what kind of gasket sealer do you recommend for the pump pan gasket? I thought you didn't need one, but it is impossible to get the pump & gasket to go up and in without one of them sliding out of position!?

Any ideas on putting it all back together?

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Gary-Miss

03-12-2003 20:50:29




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 Re: 8N hyd pump reinstall in reply to Jake, 03-12-2003 06:23:19  
You might try setting it in a board on the jack, so that you can still slide it a little. I know, it ain't always easy, Get the front lodged with the back end hanging down a little. It's always a lot easier with the top off. I have an overhead crane that I built, so, it is usually easier and less time consuming to pull the top off and renew the old steel rings type piston with the "O" ring type while I'm in the neighborhood, then, reinstall the pump while the top is off. Watch out if you lift the top off without a hoist or help. You may have to repair the hernia, too. Good luck.

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Barnstormer

03-12-2003 07:15:43




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 Re: 8N hyd pump reinstall in reply to Jake, 03-12-2003 06:23:19  
What Gary said and...since you are (or were) using a floor jack and it "got caught", I would look carefully at the linkage to the manual valve to be sure that you did not bend it.



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Gary-Miss

03-12-2003 07:01:25




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 Re: 8N hyd pump reinstall in reply to Jake, 03-12-2003 06:23:19  
Yes-it is possible- Remove the right side cover and the left pto control lever cover. Ease it up, a little to the rear of the hole, then ease it forward. Somewhere in here, you will have to direct the left control rod into the control valve lever. I have had better luck without using a jack. It just doesn't allow enough wiggle room. Once you get it into the hole, a jackstand previously adjusted and handy will hold the back end while the front end willstay hung up in the hole. If you can get by without it, I would not put any sealant on the gasket. There will be enough space between the pump and th transmission to kind of wiggle the gasket in its proper place before putting the bolts in/ ALWAYS USE A NEW GASKET ON TOP OR BOTTOM WHEN YOU REMOVE THEM. i HAVE SEEN JUST ONE OF THEM "BLOW" THE GASKET at the oil pressure oil. It's just not worth it.

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Jake

03-12-2003 17:59:00




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 Re: Re: 8N hyd pump reinstall in reply to Gary-Miss, 03-12-2003 07:01:25  
Thanks for the reply. If I could inquire further to your...What exactly do you mean by "ease it up a little" without using a jack? Note that I'm trying to do this by myself. The pump is very heavy and I can get at most 1 or 2 lift attempts per evening before my arms are so tired that I cannot lift it anymore.

I have been through 2 gaskets now and am now on my last one. Every time I get it up in the hole and the rod ball in the socket it simply gets stuck as I said. It will not move forward all the way so the nut holes line up. If I shift it around too much the gasket (inevitably as it has twice now) tears.

I'm at wit's end on this and have now spent 3 days trying to get the pump back in. This tractor is truly a pain!

Jake

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