Revisiting my 450 hydraulics. (https://forums.yesterdaystractors.com/viewtopic.php?t=1392614). The fast hitch cylinder has been rebuilt. The tractor has two valves, Behlen power steering, and an M&W pump. I have had problems with foaming and decided to replace o-rings between valve bodies, column, covers, safety valve, and line connections. The column to reservoir gasket and column to steering gasket are not easily available so I made my own from a rubber fiber gasket sheet.
It has been an [u:8917c25a09][i:8917c25a09]unsuccessful[/i:8917c25a09][/u:8917c25a09] attempt.
To add to this, I made a big mistake - to keep dirt out, I had plugged openings with paper shop towels, then missed one while putting it back together. That piece has since gone through the system basically disintegrating. I ve replaced that oil, cleaned the filter in the reservoir, and cleaned the filter plug in the priority valve.
The pump is still loading unless I operate one of the valves. Power steering works well and does not appear to affect the loading.
The valve for the remote connection does not return to center when released. The valve is set for double acting. I removed it from the system temporarily and only had the fast hitch valve connected. The system still loaded.
While the remote valve was off, I opened each end of it but did not remove the valve from the valve body. I noted that the control valve guide appeared to be loose. It did rotate from the single to double position, but I wondered how loose this should really be?
My next steps are to open up the control valves and safety valve to check/clean them. Am I asking for more trouble? (as long as I don t leave another paper plug in it!)
It has been an [u:8917c25a09][i:8917c25a09]unsuccessful[/i:8917c25a09][/u:8917c25a09] attempt.
To add to this, I made a big mistake - to keep dirt out, I had plugged openings with paper shop towels, then missed one while putting it back together. That piece has since gone through the system basically disintegrating. I ve replaced that oil, cleaned the filter in the reservoir, and cleaned the filter plug in the priority valve.
The pump is still loading unless I operate one of the valves. Power steering works well and does not appear to affect the loading.
The valve for the remote connection does not return to center when released. The valve is set for double acting. I removed it from the system temporarily and only had the fast hitch valve connected. The system still loaded.
While the remote valve was off, I opened each end of it but did not remove the valve from the valve body. I noted that the control valve guide appeared to be loose. It did rotate from the single to double position, but I wondered how loose this should really be?
My next steps are to open up the control valves and safety valve to check/clean them. Am I asking for more trouble? (as long as I don t leave another paper plug in it!)