Closed Center hydraulic issue

Scout2008 · Mar 25, 2019

I had the Vickers hydraulic pump rebuilt on my 69 M670 during the restore. I hooked everything up, and everything was working good. I had to drain the system, and upon refilling it I have a lot of noise in they hydraulic system. At first I thought it was air in the lines, but I have gone through the whole program of bleeding it and even have the hose in the remotes to run fluid through there. The line coming from the pressure side seems to have a lot of high frequency vibration when not raising the 3 pt, or when the by pass hose in the remote is not open. It did not do this the first time I filled the system. The vibration can be felt under the platform under your right foot while sitting on the tractor. I hope I have described this well enough for someone to possibly have some answers. Thanks!

Curt Cooke · Mar 26, 2019

Doubt if I have the answer but with my 900 I regularly adjust the pressure valve on the pump to suit the need at the moment because if I have it adjusted for max pressure, I get the same result you speak of. Thus, if Have but a small need for hydraulic pressure, I back it off to reduce the pressure and the vibrations,
CC

J. Schwiebert · Mar 27, 2019

Sounds like the pressure compensator is not properly adjusted. I also sent you an e-mail. did you receive it?

Scout2008 · Mar 27, 2019

Yes John. I will try to call you later today. Thanks

Closed Center hydraulic issue

Scout2008

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Curt Cooke

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J. Schwiebert

Well-known Member

Scout2008

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