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8N hydraulics won't work

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MTN

04-24-2000 07:00:08




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Help!. I was using a blade to fix my driveway everything was working great, I lowered the blade and when i tried to raise it it wont do anything, just quit. i checked the oil level and what was on the dipstick looked cloudy like there was air bubbles in it, i pulled the filler plug and it LOOKED empty so i put some oil in, it shows on the dipstick that i have overfilled it severly and no change in the color of the fluid. What do i check first here? Any help or suggestions will be greatly appreciated.
Thanks

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RWK (WI)

04-24-2000 18:17:43




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 Re: 8N hydraulics won't work in reply to MTN, 04-24-2000 07:00:08  
Blade work causes a lot of vibration. On my Ferg. TE 20 this often caused the linkage to jump off the "ears" on the control. The linkage seems to have lost its spring strength. I wrapped a long nylon tie aroutnd the two arms after I had it back on the ears and it hasn't come off in over two years.

Maybe this can help you.

Dick - - - - -



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bg

04-24-2000 11:00:18




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 Re: 8N hydraulics won't work in reply to MTN, 04-24-2000 07:00:08  
Check the fluid, open the side cover onthe right side(the round thing where the dipstick is)and engage the pump. Look and see if your pump is working and observe if anything is happening inside, like a lot of frothy agitation in the sump, a major cascade of fluid from above or what.
From that, you should be able to narrow down a diagnosis.
There are several possibilities: pump problems,
linkage problems, cylinder/piston problems.

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MTN

04-25-2000 06:52:25




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 Re: Re: 8N hydraulics won't work in reply to bg, 04-24-2000 11:00:18  
Thanks for the interest. I took the round cover off on the side as you said and started the tractor and engaged the pto, since i dont know what i am looking for i didnt really come to any conclusions except that the oil definately has water in it for some reason. The only movement in the fluid was some small movement just inside the sump to the right like a gear was turning, there was NO flow at all that i saw, i operated the lift lever a couple of times and nothing changed either, would just water in the oil cause it to stop working completely??

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bg

04-25-2000 09:00:25




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 Re: Re: Re: 8N hydraulics won't work in reply to MTN, 04-25-2000 06:52:25  
Yes, if the oil is too thin(emulsified)by water, there is not enough viscosity, which would impede pump/cylinder function. The quickest test is to drain the system, refill with fresh 134D and try it. There is a test port at the bottom of the pump housing where you can remove the plug and see if the pump is functioning, either with a pressure gauge or by discharging fluid.
Take 5 gallons of 134D which you can buy in a generic form for around $20-25/bucket.

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MTN

04-27-2000 06:35:36




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 Re: Re: Re: Re: 8N hydraulics won't work in reply to bg, 04-25-2000 09:00:25  
Where is the hydraulic pump located??



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