Wow, that's exactly the same problem I'm experiencing with my 240U! I cleaned the screen, replaced the filter, rebuilt the hydraulic control valves, and replaced all of the O-rings between the pump and the control valve, replaced the pump's gasket, and it still foams out the breather until the level of fluid drops. I noticed the section of rubber hose in the suction line is kind of ratty looking, and wondered if air could leak in, while fluid wouldn't leak out, but didn't know if that was possible. I'll try the pressure test Jim suggested as well. Please report back what you find out, as the problem has been driving me crazy.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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