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Case Tractors Discussion Forum
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David Brown 880 hyd.pump question?

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Tim H in Tenn.

11-05-2007 16:13:05




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The 3 point lift will not raise on my 880 select o matic diesel. What should I check? Thanks for any help you can offer.




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Tim in Tenn.

11-06-2007 16:23:28




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 Re: David Brown 880 hyd.pump question? in reply to Tim H in Tenn., 11-05-2007 16:13:05  
Thank you all for your advice.



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jim in north texas

11-06-2007 04:23:24




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 Re: David Brown 880 hyd.pump question? in reply to Tim H in Tenn., 11-05-2007 16:13:05  
I just finished taking the pto off my 995 using an engine hoist. I found that the gear that meshes with the one on the pump had come loose. It is held in by a bolt. I Put some loctite on the threads and tightened it down and put it back together. The drawbar reinstallation was the hardest part. I did not even have to drain the fluid, although I lost a little. Hope this helps.



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Barry Key

11-06-2007 01:21:53




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 Re: David Brown 880 hyd.pump question? in reply to Tim H in Tenn., 11-05-2007 16:13:05  
Behind the hyd lever, on top of the rear axle case, is a kidney shaped plate held by two screws. Remove this plate. You will then see two plugs with screw driver slots. Remove the RH plug nearest the RH mudguard. You will probably need a hammer and screw driver. Then remove the spring, then, with a thin screw driver hook out the hollow valve inside. With the valve out, turn the engine over on the starter, with the fuel stop out. This will flush out the gallery and show that the pump is actually pumping something. Then unscrew the brass screw inside the valve, under this is an alloy washer with a pin hole in it. Make sure the washer is clean and that you can see through it. Refit and check.

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John Adamson

11-05-2007 18:07:05




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 Re: David Brown 880 hyd.pump question? in reply to Tim H in Tenn., 11-05-2007 16:13:05  
We had a 990 here at the Road District that did the same thing. We foung that the steel line that ran from the pump to the controls broke. You should be able to get to the pump by removing the pto housing. Also there are a couple of O-rings in there.



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jerry s

11-05-2007 16:18:54




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 Re: David Brown 880 hyd.pump question? in reply to Tim H in Tenn., 11-05-2007 16:13:05  
my cousin has the same tractor it may be the pump is out.his done the same thing and him dad said the pump was out the pump is on a few places i have looked up i am waiting to see if he wants his fixed.i hope this helps you out
jerry



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