B7100 3 point hitch keeps dropping

bamanate · 06-10-2008, 06:28 PM

I have a 1980 B7100 HST. I recently changed the fluid, round filter and cleaned the screen filter on the bolt. I thought this would help with my problem, but it has not. Whenever I raise my 3 point hitch epecially with any weight, it slowly keeps going down so that I have to keep an eye on it. Does anyone have any ideas? It does not seem to be losing fluid so I can only imagaine that it's getting air into the line.
Any help is much appreciated.
Thanks in advance.

Bird · 06-10-2008, 07:32 PM

I'm not sure how to describe it, but it sounds as if you have a leaking internal cylinder seal that's letting it bleed down. Do you have a workshop manual? I imagine they call it a rockshaft cylinder, but don't know for sure. It'll be in the housing under the seat. The other possibility is the the valve itself leaking.

botamike · 06-10-2008, 07:49 PM

Yepper, you have a leaking cylinder seal or valve, time to go thru the 3pt lift hyd and rework things. I havent had to do one yet at the dealership, but have heard we have one coming in soon for it. Mike

charlz · 06-10-2008, 11:24 PM

Mine is a 1977 DT and had the same problem, the o-ring in the internal lift cylinder was worn out. See this thread for pics etc. on how I fixed mine:

http://www.tractorbynet.com/forums/p...pping-3pt.html

Charles

bamanate · 06-13-2008, 06:32 PM

Thanks for your help guys, I'll get right on that.

06-10-2008, 06:28 PM	#1 (permalink)
bamanate New Member Join Date: Mar 2008 Posts: 10	B7100 3 point hitch keeps dropping I have a 1980 B7100 HST. I recently changed the fluid, round filter and cleaned the screen filter on the bolt. I thought this would help with my problem, but it has not. Whenever I raise my 3 point hitch epecially with any weight, it slowly keeps going down so that I have to keep an eye on it. Does anyone have any ideas? It does not seem to be losing fluid so I can only imagaine that it's getting air into the line. Any help is much appreciated. Thanks in advance.

06-10-2008, 07:32 PM	#2 (permalink)
Bird Epic Contributor Join Date: Mar 2000 Location: Corinth, TX, USA Posts: 22,677	Re: B7100 3 point hitch keeps dropping I'm not sure how to describe it, but it sounds as if you have a leaking internal cylinder seal that's letting it bleed down. Do you have a workshop manual? I imagine they call it a rockshaft cylinder, but don't know for sure. It'll be in the housing under the seat. The other possibility is the the valve itself leaking. __________________

06-10-2008, 07:49 PM	#3 (permalink)
botamike Silver Member Join Date: Aug 2007 Location: Kokomo, IN Posts: 196	Re: B7100 3 point hitch keeps dropping Yepper, you have a leaking cylinder seal or valve, time to go thru the 3pt lift hyd and rework things. I havent had to do one yet at the dealership, but have heard we have one coming in soon for it. Mike __________________ If it ain't RED......Leave it in the SHED!!!

06-10-2008, 11:24 PM	#4 (permalink)
charlz Platinum Member Join Date: Jul 2006 Location: Meridian Idaho Posts: 661	Re: B7100 3 point hitch keeps dropping Mine is a 1977 DT and had the same problem, the o-ring in the internal lift cylinder was worn out. See this thread for pics etc. on how I fixed mine: http://www.tractorbynet.com/forums/p...pping-3pt.html Charles

06-13-2008, 06:32 PM	#5 (permalink)
bamanate New Member Join Date: Mar 2008 Posts: 10	Re: B7100 3 point hitch keeps dropping Thanks for your help guys, I'll get right on that.

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